Data Sheet GE QBDW033A0B Barracuda* Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Features RoHS Compliant  Compliant to RoHS II EU “Directive 2011/65/EU (-Z versions)  Compliant to REACH Directive (EC) No 1907/2006  High and flat efficiency profile >95.3% at 12Vdc, 30% to 100% rated output  Wide input voltage range: 36-75V dc  Delivers up to 33Adc output current  Remote sense and output voltage trim  Fully very tightly regulated output voltage  Output voltage adjust: 8.1V to 13.2V dc dc  Low output ripple and noise  Industry standard, DOSA compliant, Quarter brick: 58.4 mm x 36.8 mm x 11.7 mm (2.30 in x 1.45 in x 0.46 in) Applications  Constant switching frequency  Distributed power architectures  Positive remote On/Off logic  Intermediate bus voltage applications  Output over current/voltage protection  Servers and storage applications  Digital interface with PMBus™ Rev.1.2 compliance^  Networking equipment including Power over Ethernet  Over temperature protection (PoE)  Wide operating temperature range (-40°C to 85°C)  Fan assemblies other systems requiring a tightly # † 60950-1-2011 Recognized, CAN/CSA C22.2  ANSI/ UL regulated output voltage No.60950-1-07, Second Edition + A1:2011 (MOD) Certified IEC 60950-1:2005 (2nd edition) + A1:2009 and EN 60950-1:2006 Options + A11:2009 + A1:2010 + A12:2011, and VDE‡ 0805-1 Licensed  Negative Remote On/Off logic (1=option code, factory § preferred)  CE mark 2006/96/EC directives  Auto-restart after fault shutdown (4=option code,  Meets the voltage and current requirements for ETSI 300- factory preferred) 132-2 and complies with and licensed for Basic insulation rating per EN60950-1  Base plate option (-H=option code) ¤  2250 Vdc Isolation tested in compliance with IEEE 802.3 PoE  Passive Droop Load Sharing (-P=option code) standards  ISO** 9001 and ISO14001 certified manufacturing facilities Description The QBDW033A0B Barracuda series of dc-dc converters are a new generation of DC/DC power modules designed to support 9.6 -12V intermediate bus applications where multiple low voltages are subsequently generated using point of load (POL) dc converters, as well as other application requiring a tightly regulated output voltage. The QBDW033A0B series operate from an input voltage range of 36 to 75Vdc and provide up to 33A output current at output voltages from 8.1Vdc to 12Vdc, and 400W output power from output voltages of 12.1Vdc to 13.2Vdc in a DOSA standard quarter brick. The converter incorporates digital control, synchronous rectification technology, a fully regulated control topology, and innovative packaging techniques to achieve efficiency exceeding 96% peak at 12Vdc output. This leads to lower power dissipations such that for many applications a heat sink is not required. Standard features include output voltage trim, remote sense, on/off control, output overcurrent and over voltage protection, over temperature protection, input under and over voltage lockout, power good signal and PMBus interface. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-in filtering for both input and output minimizes the need for external filtering. * Trademark of General Electric Company ^ PMBus name and logo are registered trademarks of SMIF, Inc. # UL is a registered trademark of Underwriters Laboratories, Inc. † CSA is a registered trademark of Canadian Standards Association. ‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V. § This product is intended for integration into end-user equipment . All of the required procedures of end-use equipment should be followed. ¤ IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated. ** ISO is a registered trademark of the International Organization of Standards. May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 1 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the Data Sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Device Symbol Min Max Unit Input Voltage* Continuous VIN -0.3 75 Vdc Operating transient ≤ 100mS 100 Vdc Non- operating continuous V 80 100 V IN dc Operating Ambient Temperature All T -40 85 °C A (See Thermal Considerations section) Logic Pin Voltage (to SIG_GND or VO(-)) All V -0.3 3.6 V pin dc TRIM/C1, C2, ADDR0, ADDR1, CLK, DATA, SMBALERT Storage Temperature All T -55 125 °C stg I/O Isolation Voltage (100% factory Hi-Pot tested) All 2250 V   dc * Input over voltage protection will shutdown the output voltage when the input voltage exceeds threshold level. Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage VIN 36 48 75 Vdc Maximum Input Current I - - 12 A IN,max dc (V =0V to 75V, I =I) IN O O, max Input No Load Current All IIN,No load 80 mA (V = V , I = 0, module enabled) IN IN, nom O Input Stand-by Current All I 22 mA IN,stand-by (VIN = VIN, nom, module disabled) External Input Capacitance All 100 - - μF 2 2 Inrush Transient All It - - 1 A s Input Terminal Ripple Current (Measured at module input pin with maximum specified input capacitance and ൏ 500uH inductance between voltage source All - 350 - mA rms and input capacitance) 5Hz to 20MHz, V = 48V, I = I IN O Omax Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12μH source impedance; V = 48V, I = All - 40 - mA IN O p-p I ; see Figure 10) Omax Input Ripple Rejection (120Hz) All - 25 - dB CAUTION: This power module is not internally fused. An input line fuse must always be used. This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 30 A (see Safety Considerations section). Based on the information provided in this Data Sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s Data Sheet for further information. May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 2 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Electrical Specifications (continued) Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point (Default) (VIN=VIN,nom, IO=16.5A, TA =25°C) All VO, set 11.97 12.00 12.03 Vdc (Adjustable via PMBus) All w/o - VO 11.76  12.24 Vdc Output Voltage Variation from Default P (Over all operating input voltage (40V to 75V), resistive -P load, and temperature conditions until end of life) V 11.63  12.37 V O dc Option Output Voltage (V =36V, T = 25ºC) All V 11.00 V IN A O   dc Output Regulation [VIN, min = 40V] Line (VIN= VIN, min to VIN, max) All  0.2  % VO, set All w/o - Load (IO=IO, min to IO, max)  0.2  % VO, set P -P Load (I =I to I ), Intentional Droop 0.50 V O O, min O, max dc Oti Temperature (T = -40ºC to +85ºC) All 2 % V A   O, set Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max) RMS (5Hz to 20MHz bandwidth) All 70 mV   rms Peak-to-Peak (5Hz to 20MHz bandwidth) All  200  mVpk-pk External Output Capacitance All CO, max 0  10,000 μF For CO >5000uF, IO must be < 50% IO, max during Trise. Output Current All IO 0 33 Adc VOUT_OC_FAULT_LIMIT (Default) All IO,lim  40  Adc (Adjustable via PMBus) Efficiency VIN=VIN, nom, TA=25°C IO=100% IO, max, VO= VO,set All η 95.3 % I =40% I to 75% I V = V All η 95.8 % O O, max O, max , O O,set Switching Frequency f 150 kHz sw Dynamic Load Response dIO/dt=1A/10s; Vin=Vin,nom; TA=25°C; (Tested with a 1.0μF ceramic, a 10μF tantalum, and 470μF capacitor and across the load.) Load Change from I = 50% to 75% of I : O O,max V 500 mVpk pk   Peak Deviation All t __ 700 __ s s Settling Time (V <10% peak deviation) O Load Change from I = 75% to 50% of I : O O,max Peak Deviation All V __ 500 __ mVpk pk Settling Time (VO <10% peak deviation) ts __ 700 s General Specifications Parameter Device Symbol Typ Unit Calculated Reliability Based upon Telcordia SR-332 Issue All MTBF 3,108,685 Hours 2: Method I, Case 3, (IO=80%IO, max, TA=40°C, Airflow = 200 9 All FIT 321.7 10 /Hours LFM), 90% confidence Weight – Open Frame 47.4 (1.67) g (oz.) Weight – with Base plate option 66.4 (2.34) g (oz.) May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 3 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Isolation Specifications Parameter Symbol Min Typ Max Unit Isolation Capacitance C 1000 pF iso   Isolation Resistance R 10 MΩ iso   Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit Remote On/Off Signal Interface (V =V to V , Signal referenced to Vterminal) IN IN, min IN, max IN- Negative Logic: device code suffix “1” Logic Low = module On, Logic High = module Off Positive Logic: No device code suffix required Logic Low = module Off, Logic High = module On Logic Low Specification On/Off Thresholds: Remote On/Off Current – Logic Low (Vin =100V) All Ion/off 280  310 μA Logic Low Voltage All V -0.3 0.8 V on/off  dc Logic High Voltage – (Typ = Open Collector) All Von/off 2.0  14.5 Vdc Logic High maximum allowable leakage current All I 10 μA on/off   (V = 2.0V) on/off Maximum voltage allowed on On/Off pin All Von/off   14.5 Vdc TON_DELAY and TON_RISE (Adjustable via PMBus) T =Time until V = 10% of V from either delay O O,set All w/o -P Tdelay, Enable with Vin   150 ms application of Vin with Remote On/Off set to On Tdelay, Enable with All w/o-P   10 ms on/off (Enable with Vin); or operation of Remote On/Off from w/ -P T , Enable with Vin 180* ms delay   Off to On with Vin already applied for at least 150 milli- seconds (Enable with on/off). (I =I ) O O, max Tdelay, Enable with w/ -P   40* ms on/off * Increased Tdelay due to startup for parallel modules. T =Time for V to rise from 10% to 90% of V , For All w/o - rise O O,set T 15 ms rise   C >5000uF, I must be < 50% I during T . P O O O, max rise * Increased T when Vo exists at startup for parallel rise w/ -P T 300* ms rise   modules. Load Sharing Current Balance -P (difference in output current across all modules with I 3 A diff Option outputs in parallel, no load to full load) Remote Sense Range All V 0.5 V Sense   dc VOUT_COMMAND (Adjustable via PMBus) All VO, set 8.1 13.2 Vdc V V O,set- O,set- VOUT_OV_FAULT_LIMIT (Adjustable via PMBus) All V V O,limit dc +2.5V +5.0V OT_FAULT_LIMIT (Adjustable via PMBus) All T 140 °C ref   Input Undervoltage Lockout (Adjustable via PMBus) VIN_ON 33 35 36 Vdc VIN_OFF 31 33 34 Vdc Input Overvoltage Lockout (Adjustable via PMBus) Turn-off Threshold [VIN_OV_FAULT_LIMIT]  85  V dc Turn-on Threshold  78  V dc (follows VIN_OV_FAULT_LIMIT -7V) Pull down resistance of PGOOD pin All 150 Ω Sink current capability into PGOOD pin (V =2.2V) All 15 mA PG May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 4 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Digital Interface Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Conditions Symbol Min Typ Max Unit PMBus Signal Interface Characteristics Input High Voltage (CLK, DATA) VIH 2.1 3.6 V Input Low Voltage (CLK, DATA) VIL 0.8 V Input high level current (CLK, DATA) I -10 10 μA IH Input low level current (CLK, DATA) IIL -10 10 μA Output Low Voltage (CLK, DATA, SMBALERT#) I=2mA VOL 0.4 V OUT Output high level open drain leakage current VOUT=3.6V IOH 0 10 μA (DATA, SMBALERT#) Pin capacitance CO 0.7 pF PMBus Operating frequency range (* 5-10 kHz to accommodate hosts not supporting Slave Mode FPMB 5* 400 kHz clock stretching) Measurement System Characteristics Output current reading range I 1.6500 63.937 A OUT(RNG) Output current reading blanking I 0 1.5875 A OUT(BNK) Output current reading resolution IOUT(RES) 62.5 mA Output current reading accuracy 16.5A< Iout <33.0A IOUT(ACC) -5.0 -1.4 3.0 % Output current reading accuracy (absolute 1.65A< Iout <16.5A IOUT(ACC) -1.7 2.5 A difference between actual and reported values) 15.999 VOUT reading range VOUT(RNG) 0 V 7 V reading resolution V 0.244 mV OUT OUT(RES) VOUT reading accuracy VOUT(ACC) -2.0 0.6 2.0 % 127.87 VIN reading range VIN(RNG) 0 V 5 VIN reading resolution VIN(RES) 125 mV V reading accuracy V -4.0 0.8 4.0 % IN IN(ACC) Temperature reading resolution T 0.25 °C (RES) Temperature reading accuracy T -5.0 5.0 % (ACC) May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 5 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Characteristic Curves The following figures provide typical characteristics for the QBDW033A0B (12V, 33A) at 25ºC. The figures are identical for either positive or negative Remote On/Off logic. INPUT VOLTAGE, VO (V) OUTPUT CURRENT, IO (A) Figure 1. Typical Input Characteristic. Figure 2. Typical Converter Efficiency vs. Output Current. TIME, t (500 μs/div) TIME, t (2s/div) Figure 3. Typical Output Ripple and Noise, Io = Io,max. Figure 4. Typical Transient Response to 0.1A/µs Step Change in Load from 50% to 75% to 50% of Full Load, Co=470µF and 48 Vdc Input. TIME, t (20 ms/div) TIME, t (5 ms/div) Figure 5. Typical Start-Up Using Vin with Remote On/Off Figure 6. Typical Start-Up Using Remote On/Off with Vin enabled, negative logic version shown. applied, negative logic version shown. May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 6 OUTPUT VOLTAG INPUT VOLTAGE OUTPUT VOLTAGE, INPUT CURRENT, Ii (A) V (V) (5V/div) V (V) (20V/div) O IN V (V) (50mV/div) O EFFCIENCY, η (%) OUTPUT CURRENT OUTPUT VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE I (A) (10A/div) V (V) (200mV/div) O O V (V) (5V/div) V (V)(2V/div) O ON/OFF Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Characteristic Curves (continued) INPUT VOLTAGE, Vin (V) OUTPUT CURRENT, IO (A) Figure 7. Typical Output Voltage Regulation vs. Input Voltage. Figure 8. Typical Output Voltage Regulation vs. Output Current. INPUT VOLTAGE, V (V) OUTPUT CURRENT, I (A) in O Figure 9. Typical Output Voltage Regulation vs. Input Voltage Figure 10. Typical Output Voltage Regulation vs. Output for the –P Version. Current for the –P Version. . May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 7 OUTPUT VOLTAGE, VO (V) OUTPUT VOLTAGE, VO (V) OUTPUT VOLTAGE, VO (V) OUTPUT VOLTAGE, VO (V) Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Test Configurations Design Considerations Input Source Impedance The power module should be connected to a low ac-impedance source. A highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 10, a 100μF electrolytic capacitor, Cin, (ESR<0.7 at 100kHz), mounted close to the power module helps ensure the stability of the unit. If the module is subjected to rapid on/off cycles, a 330μF input capacitor is required. Consult the factory for further application guidelines. Note: Measure input reflected-ripple current with a Safety Considerations simulated For safety-agency approval of the system in which the source inductance (LTEST) of 12 µH. Capacitor CS offsets power module is used, the power module must be installed possible battery impedance. Measure current as shown above. in compliance with the spacing and separation Figure 11. Input Reflected Ripple Current Test Setup. requirements of the end-use safety agency standard, i.e., nd nd UL60950-1 2 Ed., CSA C22.2 No. 60950-1 2 Ed., and nd VDE0805-1 EN60950-1 2 Ed. If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75Vdc), for the module’s output to be considered as meeting the requirements for safety extra-low voltage (SELV), all of the following must be true:  The input source is to be provided with reinforced insulation from any other hazardous voltages, including the ac mains.  One VIN pin and one VOUT pin are to be grounded, or both the input and output pins are to be kept floating. Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or  The input pins of the module are not operator accessible. tantalum capacitor. Scope measurement should be made using a BNC socket. Position the load between  Another SELV reliability test is conducted on the whole 51 mm and 76 mm (2 in. and 3 in.) from the module. system (combination of supply source and subject module), as required by the safety agencies, to verify that under a single fault, hazardous voltages do not Figure 12. Output Ripple and Noise Test Setup. appear at the module’s output. CONTACT AND Note: Do not ground either of the input pins of the module DISTRIBUTION LOSSES without grounding one of the output pins. This may VO1 VI(+) allow a non-SELV voltage to appear between the IO II output pins and ground. LOAD SUPPL Y The power module has safety extra-low voltage (SELV) outputs when all inputs are SELV. VI(–) VO2 The input to these units is to be provided with a maximum CONT ACT RESIST ANCE 30 A fast-acting (or time-delay) fuse in the unearthed lead. Note: All measurements are taken at the module terminals. When The power module has internally generated voltages socketing, place Kelvin connections at module terminals to avoid exceeding safety extra-low voltage. Consideration should be measurement errors due to socket contact resistance. taken to restrict operator accessibility. Figure 13. Output Voltage and Efficiency Test Setup. May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 8 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output PMBus interface. A minimum 2V hysteresis between VIN_ON Feature Descriptions and VIN_OFF is required. Overcurrent Protection Input Over Voltage Lockout To provide protection in a fault output overload condition, the QBDW033A0B module is equipped with internal current- The QBDW033A0B module contains circuitry to detect and limiting circuitry and can endure current limiting respond to input overvoltage conditions. If the overvoltage condition causes the input voltage to rise above the limit in continuously. If the overcurrent condition causes the output the Specifications Table, the module will shut down. The voltage to fall below 4.0V, the module will shut down. The module is factory default configured for auto-restart module is factory default configured for auto-restart operation. The auto-restart feature continually monitors the operation. The auto-restart feature continually attempts to input voltage and will restart the module when the level falls restore the operation until fault condition is cleared. If the output overload condition still exists when the module 7V below the VIN_OV_FAULT level. restarts, it will shut down again. This operation will continue The VIN_OV_FAULT threshold level can be reconfigured via indefinitely until the overcurrent condition is corrected. the PMBus interface. The IOUT_OC_WARN threshold level, IOUT_OC_FAULT Remote On/Off (i) threshold level, and IOUT_OC_FAULT_RESPONSE can be reconfigured via the PMBus interface. If the The module contains a standard on/off control circuit FAULT_RESPONSE is reconfigured to remain latched off reference to the VIN(-) terminal. Two factory configured following an overcurrent shutdown, the overcurrent latch is remote on/off logic options are available. Positive logic reset by either cycling the input power, or by toggling the remote on/off turns the module on during a logic-high on/off pin for one millisecond. voltage on the ON/OFF pin, and off during a logic LO. Negative logic remote on/off turns the module off during a Output Overvoltage Protection logic HI, and on during a logic LO. Negative logic, device The module contains circuitry to detect and respond to code suffix "1," is the factory-preferred configuration. The output overvoltage conditions. If the overvoltage condition On/Off circuit is powered from an internal bias supply, causes the output voltage to rise above the limit in the derived from the input voltage terminals. To turn the power Specifications Table, the module will shut down. The module on and off, the user must supply a switch to control QBDW033A0B module is factory default configured for auto- the voltage between the On/Off terminal and the VIN(-) restart operation. The auto-restart feature continually ). The switch can be an open collector or terminal (Von/off attempts to restore the operation until fault condition is equivalent (see Figure 14). A logic LO is V = -0.3V to 0.8V. on/off cleared. If the output overvoltage condition still exists when The typical I during a logic LO (Vin=48V, On/Off on/off the module restarts, it will shut down again. This operation Terminal=0.3V) is 147µA. The switch should maintain a logic- will continue indefinitely until the overvoltage condition is low voltage while sinking 310µA. During a logic HI, the corrected. maximum Von/off generated by the power module is 8.2V. The The VOUT_OV_FAULT threshold level and VOUT_OV_FAULT maximum allowable leakage current of the switch at Von/off = _RESPONSE can be reconfigured via the PMBus interface. If 2.0V is 10µA. If using an external voltage source, the the FAULT _RESPONSE is reconfigured to remain latched off maximum voltage Von/off on the pin is 14.5V with respect to following an overvoltage shutdown, the overvoltage latch is the VIN(-) terminal. reset by either cycling the input power, or by toggling the If not using the remote on/off feature, perform one of the on/off pin for one millisecond. following to turn the unit on: Overtemperature Protection For negative logic, short ON/OFF pin to VIN(-). The modules feature an overtemperature protection circuit For positive logic: leave ON/OFF pin open. to safeguard against thermal damage. The circuit shuts down the module when the default maximum device reference temperature is exceeded. The module is factory default configured to automatically restart once the reference temperature cools by ~25°C. The OT_WARNING and OT_FAULT threshold levels and OT_FAULT_RESPONSE can be reconfigured via the PMBus interface. If the FAULT _RESPONSE is reconfigured to remain latched off following an overtemperature shutdown, the overtemperature latch is reset by either cycling the input power or by toggling the on/off pin for one millisecond. Figure 14. Remote On/Off Implementation. Input Under Voltage Lockout When Vin exceeds VIN_ON, the module output is enabled, when Vin falls below VIN_OFF, the module output is disabled. VIN_ON and VIN_OFF can be reconfigured via the May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 9 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output maximum rated power (Maximum rated power = Vo,set x Feature Descriptions (continued) Io,max). Load Sharing For higher power requirements, the QBDW033A0 power module offers an optional feature for parallel operation (-P Option code). This feature provides a precise forced output voltage load regulation droop characteristic. The output set point and droop slope are factory calibrated to insure optimum matching of multiple modules’ load regulation characteristics. To implement load sharing, the following requirements should be followed: Figure 15. Circuit Configuration for remote sense.  The V (+) and V (-) pins of all parallel modules must be OUT OUT connected together. Balance the trace resistance for each Configurable Control Pins module’s path to the output power planes, to insure best The QBDW033A0B contains two configurable control pins, load sharing and operating temperature balance. T/C1 and C2, referenced to the module secondary SIG_GND.  VIN must remain between 40Vdc and 75Vdc for droop See Mechanical Views for pin locations. The following table sharing to be functional. list the default factory configurations for the functions  It is permissible to use a common Remote On/Off signal to assigned to these pins. Additional configurations can be start all modules in parallel. accomplished via the PMBus command,  These modules contain means to block reverse current MFR_CPIN_ARA_CONFIG. Following the table, there is a flow upon start-up, when output voltage is present from feature description for each function. other parallel modules, thus eliminating the requirement for external output ORing devices. Modules with the –P Pin Module option will self determine the presence of voltage on the Designation/Function Configuration Code output from other operating modules, and automatically T/C1 C2 increase its Turn On delay, Tdelay, as specified in the Feature On/Off (O) Power Good w/o -P Factory Default Specifications Table. Trim On/Off (O) w/o -P Via PMBus  When parallel modules startup into a pre-biased output, Trim Power Good w/o -P Via PMBus e.g. partially discharged output capacitance, the T is rise automatically increased, as specified in the Feature On/Off (O) Power Good with -P Factory Default Specifications Table, to insure graceful startup. Remote On/Off(o)  Insure that the load is <50% IO,MAX (for a single module) until all parallel modules have started (load full start > module The module contains an additional remote on/off control Tdelay time max + Trise time). input On/Off(o), via either the T/C1 or C2 pin, reference to the  If fault tolerance is desired in parallel applications, output VO(-) terminal. The factory default configuration is set to ORing devices should be used to prevent a single module ignore this input, unless activated by the PMBus command, failure from collapsing the load bus. MFR_ CPIN_ON_OFF_CONFIG. This command is also used to configure the logic for the On/Off(o) pin. Positive logic Remote Sense remote on/off turns the module on during a logic-high Remote sense minimizes the effects of distribution losses by voltage on the ON/OFF pin, and off during a logic low. Negative logic remote on/off turns the module off during a regulating the voltage at the remote-sense connections (See logic high, and on during a logic low. The On/Off(o) circuit is Figure 15). The SENSE(-) pin should be always connected to VO(–).The voltage between the remote-sense pins and the powered from an internal bias supply, referenced to output terminals must not exceed the output voltage sense SIG_GND. To turn the power module on and off, the user range given in the Feature Specifications table: must supply a switch to control the voltage between the On/Off (o) terminal and the VO(-) terminal (Von/off(o)). The [V (+) – V (–)] – [SENSE(+) ]  0.5 V O O switch can be an open collector or equivalent (see Figure Although the output voltage can be increased by both the 13). A logic low is Von/off(o) = -0.3V to 0.8V. The typical Ion/off(o) remote sense and by the trim, the maximum increase for during a logic low is 330µA. The switch should maintain a the output voltage is not the sum of both. The maximum logic-low voltage while sinking 250µA. During a logic high, increase is the larger of either the remote sense or the trim. the maximum V (o) generated by the power module is on/off The amount of power delivered by the module is defined as 3.3V. The maximum allowable leakage current of the switch the voltage at the output terminals multiplied by the output at V (o) = 2.0V is 130µA. If using an external voltage on/off current. When using remote sense and trim, the output source, the maximum voltage V on the pin is 3.3V with on/off voltage of the module can be increased, which at the same respect to the Vi(-) terminal. output current, would increase the power output of the If not using the Remote On/Off(o) feature, the pin may be module. Care should be taken to ensure that the maximum left N/C. output power of the module remains at or below the May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 10 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output % 20 Feature Descriptions (continued) 511 Power Good, PG   R  10.22 trimdown   20   The QBDW033A0B module provides a Power Good (PG) feature, which compares the module’s output voltage to the R  15.3k trimdown module’s POWER_GOOD_ON and POWER_GOOD_OFF values. These values are adjustable via PMBus. PG is Connecting an external resistor (Rtrim-up) between the T/C1 asserted when the module’s output voltage is above the (+) (or Sense (+)) pin increases the output pin and the VO POWER_GOOD_ON value, and PG is de-asserted if any voltage set point. The following equations determine the condition such as overtemperature, overcurrent or loss of required external resistor value to obtain a percentage regulation occurs that would result in the output voltage output voltage change of ∆%: going below the POWER_GOOD_OFF value. 5.11 12 .0V (100%) 511   The PG signal, provided on pin C2, is implemented with an R    10 .22  trimup   1.225%  %   open-drain node, pulled up via a 10kΩ resistor to 3.3V internally. For Positive Logic PG (default), the PG signal is HI, V  12 .0V Where   desired  %  100   when PG is asserted, and LO, when the PG is de-asserted. 12 .0V   For Negative Logic PG, the PG signal is LO, when PG is For example, to trim-up the output voltage of the module by asserted, and HI, when the PG is de-asserted. 5% to 12.6V, Rtrim-up is calculated is as follows: The PMBus command MFR_PGOOD _POLARITY is used to set % 5 the logic polarity of the signal.  5.11 12 .0 (100  5) 511  R    10 .22  If not using the Power Good feature, the pin may be left trimup   1.225 5 5   N/C. R  938.8 trimup Trim, Output Voltage Programming The voltage between the Vo(+) and Vo(–) terminals must not Trimming allows the output voltage set point to be exceed the minimum output overvoltage protection value increased or decreased; this is accomplished by connecting shown in the Feature Specifications table. This limit includes an external resistor between the TRIM pin and either the any increase in voltage due to remote-sense compensation VO(+) pin or the VO(-) pin. and output voltage set-point adjustment trim. Although the output voltage can be increased by both the V (+) remote sense and by the trim, the maximum increase for O the output voltage is not the sum of both. The maximum R trim-up increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as LOAD the voltage at the output terminals multiplied by the output T/C1 current. When using remote sense and trim, the output voltage of the module can be increased, which at the same R trim-down QBDW033A0B output current would increase the power output of the module. Care should be taken to ensure that the maximum V (-) O output power of the module remains at or below the maximum rated power (Maximum rated power = V x O,set IO,max). Figure 16. Circuit Configuration to Trim Output Voltage. Connecting an external resistor (Rtrim-down) between the T/C1 pin and the Vo(-) (or Sense(-)) pin decreases the output voltage set point. To maintain set point accuracy, the trim resistor tolerance should be ±1.0%. The following equation determines the required external resistor value to obtain a percentage output voltage change of ∆%. 511   R   10 .22  trimdown    %   12 .0V V Where   desired  %  100   12 .0V   For example, to trim-down the output voltage of the module by 20% to 9.6V, Rtrim-down is calculated as follows: May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 11 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Feature Descriptions (continued) Thermal Considerations The thermal data presented here is based on physical measurements taken in a wind tunnel, using automated thermo-couple instrumentation to monitor key component temperatures: FETs, diodes, control ICs, magnetic cores, ceramic capacitors, opto-isolators, and module pwb conductors, while controlling the ambient airflow rate and temperature. For a given airflow and ambient temperature, the module output power is increased, until one (or more) of the components reaches its maximum derated operating . temperature, as defined in IPC-9592B. This procedure is then Figure 17. Location of the thermal reference temperature repeated for a different airflow or ambient temperature until TH. a family of module output derating curves is obtained. Figure 18. Location of the thermal reference temperature TH3 for Baseplate module. The output power of the module should not exceed the rated power for the module as listed in the Ordering Information table. Please refer to the Application Note “Thermal The power modules operate in a variety of thermal Characterization Process For Open-Frame Board-Mounted environments and sufficient cooling should be provided to Power Modules” for a detailed discussion of thermal aspects help ensure reliable operation. Thermal considerations including maximum device temperatures. include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A Heat Transfer via Convection reduction in the operating temperature of the module will result in an increase in reliability. Increased airflow over the module enhances the heat transfer via convection. The thermal derating of figure 19- Heat-dissipating components are mounted on the top side 23 shows the maximum output current that can be of the module. Heat is removed by conduction, convection delivered by each module in the indicated orientation and radiation to the surrounding environment. Proper without exceeding the maximum THx temperature versus local ambient temperature (T ) for several air flow cooling can be verified by measuring the thermal reference A conditions. temperature (TH1 or TH2). Peak temperature occurs at the position indicated in Figure 17 and 18. For reliable operation The use of Figure 19 is shown in the following example: this temperature should not exceed TH1=125°C or Example TH =105°C. For extremely high reliability you can limit this 2 temperature to a lower value. What is the minimum airflow necessary for a QBDW033A0B operating at V = 48 V, an output current of 20A, and a I maximum ambient temperature of 60 °C in transverse orientation. Solution: Given: Vin= 48V, IO = 20A, TA = 60 °C Determine required airflow velocity (Use Figure 19): Velocity = 0.5m/s (100 LFM) or greater. May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 12 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Thermal Considerations (continued) LOCAL AMBIENT TEMPERATURE, T (C) LOCAL AMBIENT TEMPERATURE, T (C) A A Figure 19. Output Current Derating for the Open Frame Figure 22. Output Current Derating for the Base plate QBVW033A0B in the Transverse Orientation; Airflow QBVW033A0B-H with 0.5” heatsink in the Transverse Direction from Vin(-) to Vin(+); Vin = 48V. Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V LOCAL AMBIENT TEMPERATURE, TA (C) LOCAL AMBIENT TEMPERATURE, TA (C) Figure 20. Output Current Derating for the Base plate Figure 23. Output Current Derating for the Base plate QBVW033A0B-H in the Transverse Orientation; Airflow QBVW033A0B-H with 1.0” heatsink in the Transverse Direction from Vin(-) to Vin(+); Vin = 48V. Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = 48V. LOCAL AMBIENT TEMPERATURE, T (C) COLD WALL TEMPERATURE, T (C) A C Figure 21. Output Current Derating for the Base plate Figure 24. Output Current Derating for the Base Plate QBVW033A0B-H with 0.25” heatsink in the Transverse QBVW033A0B-H in a Cold wall application; Local Internal Air Orientation; Airflow Direction from Vin(-) to Vin(+); Vin = Temperature near module=80C, V = 48V, V setting IN OUT 48V anywhere from 6.0V to 12.0V. May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 13 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) OUTPUT CURRENT, I (A) O OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended Layout Considerations linear reflow profile using Sn/Ag/Cu solder is shown in Figure The QBDW033A0B power module series are low profile in 24. order to be used in fine pitch system card architectures. As such, component clearance between the bottom of the power module and the mounting board is limited. Avoid placing copper areas on the outer layer directly underneath the power module. Also avoid placing via interconnects underneath the power module. For additional layout guide-lines, refer to FLTR100V10 Data Sheet. Through-Hole Lead-Free Soldering Information The RoHS-compliant, Z version, through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. The non-Z version products use lead-tin (Pb/Sn) solder and RoHS-compliant components. Both Figure 24. Recommended linear reflow profile using version modules are designed to be processed through Sn/Ag/Cu solder. single or dual wave soldering machines. The pins have an RoHS-compliant, pure tin finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum MSL Rating preheat rate of 3C/s is suggested. The wave preheat The QBDW033A0B modules have a MSL rating of 2a. process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the Storage and Handling recommended pot temperature is 260C, while the Pb-free The recommended storage environment and handling solder pot is 270C max. Not all RoHS-compliant through- procedures for moisture-sensitive surface mount packages hole products can be processed with paste-through-hole Pb is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping or Pb-free reflow process. If additional information is and Use of Moisture/Reflow Sensitive Surface Mount needed, please consult with your GE representative for more Devices). Moisture barrier bags (MBB) with desiccant are details. required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the Reflow Lead-Free Soldering Information original package is broken, the floor life of the product at The RoHS-compliant through-hole products can be conditions of 30°C and 60% relative humidity varies processed with the following paste-through-hole Pb or Pb- according to the MSL rating (see J-STD-033A). The shelf life free reflow process. for dry packed SMT packages will be a minimum of 12 Max. sustain temperature : months from the bag seal date, when stored at the following conditions: < 40° C, < 90% relative humidity. 245C (J-STD-020C Table 4-2: Packaging Thickness>=2.5mm 3 / Volume > 2000mm ), Post Solder Cleaning and Drying Peak temperature over 245C is not suggested due to the Considerations potential reliability risk of components under continuous high-temperature. Post solder cleaning is usually the final circuit-board Min. sustain duration above 217C : 90 seconds assembly process prior to electrical board testing. The result Min. sustain duration above 180C : 150 seconds of inadequate cleaning and drying can affect both the Max. heat up rate: 3C/sec reliability of a power module and the testability of the Max. cool down rate: 4C/sec finished circuit-board assembly. For guidance on In compliance with JEDEC J-STD-020C spec for 2 times appropriate soldering, cleaning and drying procedures, refer reflow requirement. to GE Board Mounted Power Modules: Soldering and Cleaning Application Note (AP01-056EPS). Pb-free Reflow Profile BMP module will comply with J-STD-020 Rev. C EMC Considerations (Moisture/Reflow Sensitivity Classification for The circuit and plots in Figure 25 shows a suggested Nonhermetic Solid State Surface Mount Devices) for both configuration to meet the conducted emission limits of Pb-free solder profiles and MSL classification EN55022 Class A. For further information on designing for procedures. BMP will comply with JEDEC J-STD-020C EMC compliance, please refer to the FLT012A0Z data sheet. specification for 3 times reflow requirement. The suggested May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 14 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Figure 25. EMC Consideration Packaging Details Tray Specification All versions of the QBDW033A0B are supplied as standard in the plastic trays shown in Figure 26. Each tray contains a total Material PET (1mm) of 12 power modules. The trays are self-stacking and each 9 11 Max surface resistivity 10 -10 /PET shipping box for the QBDW033A0B module contains 2 full Color Clear trays plus one empty hold-down tray giving a total number of Capacity 12 power modules 24 power modules. Min order quantity 24 pcs (1 box of 2 full trays + 1 empty top tray) Open Frame Module Tray Base Plate Module Tray Figure 26. QBDW033 Packaging Tray May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 15 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output MFR_CPIN_ARA_CONFIG command can be used to Digital Feature Descriptions reconfigure the module to utilize ARA. In this case, the PMBus Interface Capability QBDW033A0B will no longer respond to its programmed address, when in an ALERT active state. The master is The QBDW033A0B series is equipped with a digital PMBus expected to perform the modified received byte operation, interface to allow the module to be configured, and and retire the ALERT active signal. At this time, the communicate with system controllers. Detailed timing and QBDW033A0B will return to it’s resistor programmed address, electrical characteristics of the PMBus can be found in the allowing normal master-slave communications to proceed. PMB Power Management Protocol Specification, Part 1, The QBDW033A0B does not contain capability to arbitrate revision 1.2, available at http://pmbus.org. The QBDW033A0B data bus contention caused by multiple modules responding supports both the 100kHz and 400kHz bus timing to the modified received byte operation. Therefore, when the requirements. The QBDW033A0B shall stretch the clock, as ARA is used in a multiple module PMBus application, it is long as it does not exceed the maximum clock LO period of necessary to have the QBDW033A0B module at the lowest 35ms. The QBDW033A0B will check the Packet Error programmed address in order for the host to properly Checking scheme (PEC) byte, if provided by the PMBus determine all modules’ address that are associated with an master, and include a PEC byte in all responses to the master. active SMBAlert. Please contact your GE sales representative However, the QBDW033A0B does not require a PEC byte from for further assistance, and for more information on the the PMBus master. SMBus alert response protocol, see the System Management Bus (SMBus) specification. The QBDW033A0B supports a subset of the commands in the PMBus 1.2 specification. Most all of the controller parameters PMBus Addressing can be programmed using the PMBus and stored as defaults The power module can be addressed through the PMBus for later use. All commands that require data input or output using a device address. The module has 64 possible use the linear format. The exponent of the data words is fixed addresses (0 to 63 in decimal) which can be set using at a reasonable value for the command and altering the resistors connected from the ADDR0 and ADDR1 pins to GND. exponent is not supported. Direct format data input or Note that some of these addresses (0 through 12, 40, 44, 45, output is not supported by the QBDW033A0B. The supported and 55 in decimal) are reserved according to the SMBus commands are described in greater detail below. specifications and may not be useable. The address is set in the form of two octal (0 to 7) digits, with each pin setting one The QBDW033A0B contains non-volatile memory that is used digit. The ADDR1 pin sets the high order digit and ADDR0 sets to store configuration settings and scale factors. The settings the low order digit. The resistor values suggested for each programmed into the device are not automatically saved into digit are shown in Table 4 (1% tolerance resistors are this non-volatile memory though. The STORE_DEFAULT_ALL recommended). command must be used to commit the current settings to Table 4 non-volatile memory as device defaults. The settings that are capable of being stored in non-volatile memory are noted in Digit Resistor Value (KΩ) their detailed descriptions. 0 10 SMBALERT Interface Capability 1 15.4 2 23.7 The QBDW033A0B also supports the SMBALERT response 3 36.5 protocol. The SMBALERT response protocol is a mechanism through which the QBDW033A0B can alert the PMBus master 4 54.9 that it has an active status or alarm condition via pulling the 5 84.5 SMBALERT pin to an active low. The master processes this 6 130 condition, and simultaneously addresses all slaves on the 7 200 PMBus through the Alert Response Address. Only the slave(s) that caused the alert (and that support the protocol) ADDR1 acknowledges this request. The master performs a modified receive byte operation to get the slave’s address. At this ADDR0 point, the master can use the PMBus status commands to query the slave that caused the alert. Note: The R R ADDR0 ADDR1 QBDW033A0B can only respond to a single address at any given time. Therefore, the factory default state for the SIG_GND QBDW033A0B module is to retain it’s resistor programmed address, when it is in an ALERT active condition, and not respond to the ARA. This allows master systems, which do not Figure 27. Circuit showing connection of resistors used to support ARA, to continue to communicate with the slave set the PMBus address of the module. QBDW033A0B using the programmed address, and using the 2 various READ_STATUS commands to determine the cause for The user must know which I C addresses are reserved in a the SMBALERT. The CLEAR_FAULTS command will retire the system for special functions and set the address of the module to avoid interfering with other system operations. active SMBALERT. However, when the QBDW033A0B module Both 100kHz and 400kHz bus speeds are supported by the is used in systems that do support ARA, Bit 4 of the May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 16 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output module. Connection for the PMBus interface should follow the This bit is used together with the CMD, CPR and ON bits to High Power DC specifications given in section 3.1.3 in the determine startup. SMBus specification V2.0 for the 400kHz bus speed or the Bit Value Action Low Power DC specifications in section 3.1.2. The complete Module does not power up until commanded SMBus specification is available from the SMBus web site, by the analog ON/OFF pin and the OPERATION smbus.org. 1 command as programmed in bits [2:0] of the PMBus Data Format ON_OFF_CONFIG register. For commands that set or report any voltage thresholds related to output voltage (including VOUT_COMMAND, CMD: The CMD bit controls how the device responds to the VOUT_MARGIN, POWER_GOOD and READ_VOUT), the module OPERATION command. supports the linear data format consisting of a two byte Bit Value Action value with a 16-bit, unsigned mantissa, and a fixed exponent Module ignores the ON bit in the OPERATION of -12. The format of the two data bytes is shown below: 0 command Module responds to the ON bit in the 1 OPERATION command CPR: Factory set to 1. QBDW033A0B requires On/Off(i) pin to be connected to proper input rail for module to power up. This bit is used together with the CMD and ON bits to determine startup. The value of the number is then given by Bit Value Action -12 Value = Mantissa x 2 Module requires the analog ON/OFF pin to be 1 For commands that set all other thresholds, voltages or asserted to start the unit report such quantities, the module supports the linear data PMBus Adjustable Input Undervoltage Lockout format consisting of a two byte value with an 11-bit, two’s complement mantissa and a 5-bit, two’s complement The module allows adjustment of the input under voltage exponent. The format of the two data bytes is shown below: lockout and hysteresis. The command VIN_ON allows setting the input voltage turn on threshold, while the VIN_OFF command sets the input voltage turn off threshold. For both the VIN_ON and VIN_OFF commands, possible values range from 32.000 to 46.000V in 0.125V steps. VIN_ON must be 2.000V greater than VIN_OFF. Both the VIN_ON and VIN_OFF commands use the “Linear” format with two data bytes. The upper five bits [7:3] of the high data byte form the two’s complement representation of The value is of the number is then given by the exponent, which is fixed at –3 (decimal). The remaining 11 Exponent Value = Mantissa x 2 bits are used for two’s complement representation of the th mantissa, with the 11 bit fixed at zero since only positive PMBus Enabled On/Off numbers are valid. The data associated with VIN_ON and The module can also be turned on and off via the PMBus VIN_OFF can be stored to non-volatile memory using the interface. The OPERATION command is used to actually turn STORE_DEFAULT_ALL command. the module on and off via the PMBus, while the ON_OFF_CONFIG command configures the combination of PMBus Adjustable Soft Start Delay and Rise Time analog ON/OFF pin input and PMBus commands needed to The soft start delay and rise time can be adjusted in the turn the module on and off. Bit [7] in the OPERATION module via PMBus. The TON_DELAY command sets the delay command data byte enables the module, with the following time in ms, and allows choosing delay times between 10ms functions: and 500ms, with resolution of 0.5ms. The TON_RISE command sets the rise time in ms, and allows choosing soft 0 : Output is disabled start times between 15ms and 500ms, with resolution of 1 : Output is enabled 0.5ms. When setting TON_RISE, make sure that the charging This module uses the lower five bits of the ON_OFF_CONFIG current for output capacitors can be delivered by the module data byte to set various ON/OFF options as follows: in addition to any load current to avoid nuisance tripping of the overcurrent protection circuitry during startup. Both the Bit Position 4 3 2 1 0 TON_RISE and TON_DELAY commands use the “Linear” Access r r/w r r r format with two data bytes. The upper five bits [7:3] of the Function PU CMD CPR POL CPA high data byte form the two’s complement representation of Default Value 1 1 1 1 1 the exponent, which is fixed at –1 (decimal). The remaining 11 PU: Factory set to 1. QBDW033A0B requires On/Off(i) pin to bits are used for two’s complement representation of the be connected to proper input rail for module to power up. th mantissa, with the 11 bit fixed at zero since only positive May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 17 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output numbers are valid. The data associated with TON_RISE and exponent, which is fixed at –3 (decimal). The remaining 11 TON_DELAY can be stored to non-volatile memory using the bits are used for two’s complement representation of the th STORE_DEFAULT_ALL command. mantissa, with the 11 bit fixed at zero since only positive numbers are valid. Output Voltage Adjustment Using the PMBus During module manufacture, offset and gain correction The QBDW033A0B module output voltage set point is values are written into the non-volatile memory of the adjusted using the VOUT_COMMAND. The output voltage module to null errors in the tolerance and A/D conversion of setting uses the Linear data format, with the 16 bits of the Vin. The command MFR_VIN_READ_CAL_OFFSET can be used VOUT_COMMAND formatted as an unsigned mantissa, and a to read the offset - two bytes consisting of a five-bit exponent fixed exponent of -12 (decimal) (read from VOUT_MODE). (fixed at -3) and a 11-bit mantissa in two’s complement -12 format. The resolution is 125mV. The command V = Mantissa x 2 OUT MFR_VIN_READ_CAL_GAIN can be used to read the gain The range limits for VOUT_COMMAND are 8.10V to 13.20V, correction - two bytes consisting of a unsigned 16 bit and the resolution is 0.244mV. number. The resolution of this correction factor 0.000122. The The data associated with VOUT_COMMAND can be stored to corrected input voltage reading is then given by: non-volatile memory using the STORE_DEFAULT_ALL command. V (Read) IN Output Voltage Margining Using the PMBus [V (A/D)(MFR_VIN_READ_CAL_GAIN/8192 )] IN The QBDW033A0B module can also have its output voltage MFR_VIN_READ_CAL_OFFSET margined via PMBus commands. The command VOUT_MARGIN_HIGH sets the margin high voltage, while the Measuring Output Current Using the PMBus command VOUT_MARGIN_LOW sets the margin low voltage. The module measures output current by using the output Both the VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW filter inductor winding resistance as a current sense element. commands use the “Linear” mode with the exponent fixed at The module can provide output current information using the –12 (decimal). The data associated with VOUT_MARGIN_HIGH READ_IOUT command. The command returns two bytes of and VOUT_MARGIN_LOW can be stored to non-volatile data in the linear format. The upper five bits [7:3] of the high memory using the STORE_DEFAULT_ALL command. data byte form the two’s complement representation of the The module is commanded to go to the margined high or low exponent, which is fixed at –4 (decimal). The remaining 11 voltages using the OPERATION command. Bits [5:2] are used bits are used for two’s complement representation of the to enable margining as follows: th mantissa, with the 11 bit fixed at zero since only positive numbers are valid. Output current readings are blanked 00XX : Margin Off below 1.65A. 0110 : Margin Low (Act on Fault) 1010 : Margin High (Act on Fault) During module manufacture, offset and gain correction Measuring Output Voltage Using the PMBus values are written into the non-volatile memory of the module to null errors in the tolerance and A/D conversion of The module can provide output voltage information using the IOUT. The command MFR_IOUT_CAL_OFFSET can be used to READ_VOUT command. The command returns two bytes of read the offset - two bytes consisting of a five-bit exponent data in the linear format, with the 16 bits of the READ_VOUT (fixed at -4) and a 11-bit mantissa in two’s complement formatted as an unsigned mantissa, and a fixed exponent of format. The resolution is 62.5mA. The command -12 (decimal). MFR_IOUT_CAL_GAIN can be used to read the gain correction - two bytes consisting of a unsigned 16 bit number. The During module manufacture, an offset correction value is resolution of this correction factor 0.000122. The READ_IOUT written into the non-volatile memory of the module to null command provides module average output current errors in the tolerance and A/D conversion of V . The OUT information. This command only supports positive current command MFR_VOUT_READ_CAL_OFFSET can be used to sourced from the module. If the converter is sinking current a read the offset - two bytes consisting of a signed 16-bit reading of 0 is provided. mantissa in two’s complement format, using a fixed exponent of -12 (decimal). The resolution is 0.244mV. The I (Read) OUT corrected Output voltage reading is then given by: [I (A/D) (MFR_IOUT _CAL_GAIN /8192)] OUT V (Read)[V (A/D) OUT OUT MFR_IOUT _CAL_OFFSET MFR_VOUT_READ_CAL_OFFSET Note that the current reading provided by the module is corrected for temperature. Measuring Input Voltage Using the PMBus Measuring the Temperature using the PMBus The module can provide input voltage information using the The module can provide temperature information using the READ_VIN command. The command returns two bytes of READ_TEMPERATURE_1 command. The command returns data in the linear format. The upper five bits [7:3] of the high two bytes of data in the linear format. The upper five bits [7:3] data byte form the two’s complement representation of the of the high data byte form the two’s complement May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 18 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output representation of the exponent, which is fixed at –2 (decimal). STATUS_IOUT : Returns one byte of information relating to the The remaining 11 bits are used for two’s complement status of the module’s output currentrelated faults. representation of the mantissa. Bit Position Flag Default Value 7 IOUT OC Fault 0 Note that the module’s temperature sensor is located close 6 X 0 to the module hot spot TH1 (see Thermal Considerations).and 5 IOUT OC Warning 0 is subjected to temperatures higher than the ambient air 4 X 0 temperature near the module. The temperature reading will 3 X 0 be highly influenced by module load and airflow conditions. 2 X 0 Reading the Status of the Module using the PMBus 1 X 0 0 X 0 The module supports a number of status information commands implemented in PMBus. However, not all features STATUS_INPUT : Returns one byte of information relating to are supported in these commands. A X in the FLAG cell the status of the module’s input voltage related faults. indicates the bit is not supported. Bit Position Flag Default Value 7 VIN OV Fault 0 STATUS_WORD : Returns two bytes of information with a 6 X 0 summary of the module’s fault/warning conditions. 5 X 0 High Byte 4 VIN UV Fault 0 Bit Position Flag Default Value 3 Module Off (Low VIN) 0 15 VOUT fault 0 2 X 0 14 IOUT fault or warning 0 1 X 0 13 Input Voltage fault 0 0 X 0 12 X 0 11 POWER_GOOD# (is negated) 0 STATUS_TEMPERATURE : Returns one byte of information 10 X 0 relating to the status of the module’s temperature related 9 X 0 faults. 8 X 0 Bit Position Flag Default Value 7 OT Fault 0 Low Byte 6 OT Warning 0 Bit Position Flag Default Value 5 X 0 7 X 0 4 X 0 6 OFF 0 3 X 0 5 VOUT Overvoltage 0 2 X 0 4 IOUT Overcurrent 0 1 X 0 3 VIN Undervoltage 0 0 X 0 2 Temperature 0 1 CML (Comm. Memory Fault) 0 STATUS_CML : Returns one byte of information relating to the 0 X 0 status of the module’s communication related faults. Bit Position Flag Default Value STATUS_VOUT : Returns one byte of information relating to Invalid/Unsupported the status of the module’s output voltage related faults. 7 0 Command Bit Position Flag Default Value 6 Invalid/Unsupported Data 0 7 VOUT OV Fault 0 5 Packet Error Check Failed 0 6 X 0 4 X 0 5 X 0 3 X 0 4 X 0 2 X 0 3 X 0 1 X 0 2 X 0 0 X 0 1 X 0 0 X 0 May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 19 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Summary of Supported PMBus Commands This section outlines the PMBus command support for the QBDW033A0B bus converters. Each supported command is outlined in order of increasing command codes with a quick reference table of all supported commands included at the end of the section. Each command will have the following basic information. Command Name [Code] Command support Data format Factory default Additional information may be provided in tabular form or other format, if necessary. OPERATION [0x01] Command support: On/Off Immediate and Margins (Act on Fault). Soft off with sequencing not supported and Margins (Ignore Fault) not supported. Therefore bits 6, 3, 2, 1 and 0 set as read only at factory defaults. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r/w r r/w r/w r r r r Function ON/OFF Bits[5:4] Bits[3:2] N/A Default Value 1 0 0 0 1 0 0 0 ON_OFF_CONFIG [0x02] Command support: Bit 1 polarity will be set based upon module code [0=Negative on/off logic, 1=positive on/off logic to allow customer system to know hardware on/off logic Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r/w r r Function (reserved) Bit 4 pu Bit 3 cmd Bit 2 cpr Bit 1 pol Bit 0 cpa module Default Value 0 0 0 1 1 1 1 code CLEAR_FAULTS [0x03] Command support: All functionality STORE_DEFAULT_ALL[0x11] Command support: All functionality – Stores operating parameters to EEprom memory. Command requires ≤ 500ms to execute. Delay any additional commands to module for sufficient time to complete execution. RESTORE_DEFAULT_ALL[0x12] Command support: All functionality – Restores operating parameters from EEprom memory. Command requires ≤ 200ms to execute. Delay any additional commands to module for sufficient time to complete execution. VOUT_MODE[0x20] Command support: Supported. Factory default: 0x14 – indicates linear mode with exp = -12 Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function Mode (linear) 2’s complement exponent Default Value 0 0 0 1 0 1 0 0 VOUT_COMMAND [0x21] Data format: 16 bit unsigned mantissa (implied exponent per VOUT_MODE) -12 Factory default: 12.000V ( 12.00 / 2 → 49,152 = 0xC000 ) Range limits (max/min): 13.200V/8.100V Units: volt Command support: Supported VOUT_CAL_OFFSET [0x23] Range limits (max/min): +0.25/-0.25 Units: volt Command support: read/write support, lockout per MFR_DEVICE_TYPE, functionality implemented May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 20 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output VOUT_MARGIN_HIGH [0x25] Range limits (max/min): 13.2/8.1 Units: volt Command support: read/write support, full functionality except “Ignore faults”. Note: Range cross-check - value must be greater than VOUT_MARGIN_LOW value. VOUT_MARGIN_LOW [0x26] Range limits (max/min): 13.2/8.1 Units: volt Command support: read/write support, full functionality except “Ignore faults”. Note: Range cross-check - value must be less than VOUT_MARGIN_HIGH value. VOUT_DROOP [0x28] Factory default: 0 (No droop); 15 (Parallel operation) Range limits (max/min): 50/0 Units: mv/A Command support: All functionality VIN_ON [0x35] Range limits (max/min): 46/32 Units: volt Command support: All functionality Note: Special interlock checks between VIN_ON and VIN_OFF maintain a hysteresis gap of 2V minimum and do not allow the OFF level to be higher than and ON level VIN_OFF [0x36] Range limits (max/min): 46/32 Units: volt Command support: All functionality Note: Special interlock checks between VIN_ON and VIN_OFF maintain a hysteresis gap of 2V minimum and do not allow the OFF level to be higher than and ON level VOUT_OV_FAULT_LIMIT [0x40] Range limits (max/min): 15.99/10.9 (See note 2) Units: volt Command support: All functionality Note: 1. Range cross- check – value must be greater than VOUT_COMMAND value. 2. The maximum OV Fault Limit equals the output set point plus 3V, up to 15.99V. This is an automatic module protection feature that will override a user-set fault limit if the user limit is set too high. VOUT_OV_FAULT_RESPONSE [0x41] Command support: ‐ Response settings (bits RSP0:1) – only a setting of 10, unit shuts down and responds according to the retry settings below, is supported. ‐ Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault condition causes the unit to shutdown. ‐ Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the VOUT_OV_FAULT_RESPONSE command are; ‐ The unit shuts down in response to a VOUT over voltage condition. ‐ The unit will continuously restart (normal startup) while the VOUT over voltage condition is present until it is commanded off, bias power is removed or another fault condition causes the unit to shutdown. ‐ The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 0 1 1 1 0 0 0 May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 21 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output IOUT_OC_FAULT_LIMIT [0x46] Range limits (max/min): 60/20 Units: amp Command support: All functionality Note: Range cross-check – value must be greater than IOUT_OC_WARN_LIMIT value. IOUT_OC_FAULT_RESPONSE [0x47] Command support: ‐ Response settings (bits RSP0:1) – only settings of 11, unit shuts down and responds according to the retry settings below, is supported. ‐ Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault condition causes the unit to shutdown. ‐ Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the IOUT_OC_FAULT_RESPONSE command are; ‐ The unit shuts down in response to an IOUT over current condition. ‐ The unit will continuously restart (normal startup) while the IOUT over current condition is present until it is commanded off, bias power is removed or another fault condition causes the unit to shutdown. ‐ The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 1 1 1 1 0 0 0 IOUT_OC_WARN_LIMIT [0x4A] Range limits (max/min): 40/10 Units: amp Command support: read/write support, functionality complete Note: Range cross-check – value must be less than IOUT_OC_FAULT_LIMIT value. OT_FAULT_LIMIT [0x4F] Range limits (max/min): 140/25 Units: degrees C. Command support: All functionality Note: Range cross-check – value must be greater than OT_WARN_LIMIT value. OT_FAULT_RESPONSE [0x50] Command support: ‐ Response settings (bits RSP0:1) – only setting of 10, unit shuts down and responds according to the retry settings below. ‐ Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault condition causes the unit to shutdown. ‐ Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the OT_FAULT_RESPONSE command are; ‐ The unit shuts down in response to an over-temperature condition. ‐ The unit will continuously restart (normal startup) while the over-temperature condition is present until it is commanded off, bias power is removed or another fault condition causes the unit to shutdown. ‐ The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r/w r/w r/w r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 0 1 1 1 0 0 0 May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 22 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output OT_WARN_LIMIT [0x51] Range limits (max/min): 125/25 Units: degrees C. Command support: All functionality Note: Range cross-check – value must be less than OT_FAULT_LIMIT value. VIN_OV_FAULT_LIMIT [0x55] Range limits (max/min): 90/48 Units: volt Command support: All functionality VIN_OV_FAULT_RESPONSE [0x56] Command support: Response settings (bits RSP0:1) – only settings of 11 (The device’s output is disabled while the fault is present.) is supported.. ‐ Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault. ‐ Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported. Default Settings: The default settings for the VIN_OV_FAULT_RESPONSE command are; ‐ The unit shuts down in response to a VIN over voltage condition. ‐ The unit will continuously prepares to restart (normal startup) while the VIN over voltage condition is present until it is commanded off, bias power is removed, the VIN over voltage condition is removed, or another fault condition causes the unit to shutdown. ‐ The shutdown delay is set to 0 delay cycles. Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r Function RSP[1] RSP[0] RS[2] RS[1] RS[0] DT[2] DT[1] DT[0] Default Value 1 1 0 0 0 0 0 0 POWER_GOOD_ON [0x5E] Range limits (max/min): 13.2/8.1 Units: volt Command support: full support Note: Range cross-check – value must be greater than POWER_GOOD_OFF value by 1.6V. POWER_GOOD_OFF [0x5F] Range limits (max/min): 13.2/8.1 Units: volt Command support: full support Note: Range cross-check – value must be less than POWER_GOOD_ON value by 1.6V. TON_DELAY [0x60] Range limits (max/min): 500/10 Units: milliseconds Command support: full support TON_RISE [0x61] Range limits (max/min): 500/15 Units: milliseconds Command support: full support May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 23 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output STATUS_WORD [0x79] Command support: full implementation for supported functions (note: Fans, MFR_SPECIFIC, Unknown not supported) Format 8 bit unsigned (bit field) Bit Position 15 14 13 12 11 10 9 8 Access r r r r r r r r #PWR_ UN 1 1 1 Function VOUT I/POUT INPUT MFR_SPEC FANS OTHER 1 GOOD KNOWN Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r OUTPUT VOUT_OV VIN_UV NONE OF 1 BUSY Function IOUT_OC _FAULT TEMP CML 1 _OFF _FAULT _FAULT ABOVE (1) Not supported STATUS_VOUT [0x7A] Command support: VOUT_OV_FAULT support, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r/reset(1) r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset VOUT_ TON_ TOFF_ VOUT VOUT_OV VOUT_OV VOUT_UV VOUT_UV Function MAX MAX_ MAX_ TRACKING 1 1 1 _FAULT _WARN _WARN _FAULT 1 1 1 1 _WARN FAULT WARN ERROR (1) Not supported STATUS_IOUT [0x7B] Command support: IOUT_OC_FAULT support, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r/ reset(1) r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset Function In Power IOUT_OC IOUT_OC _LV IOUT_OC IOUT_UC Current Share POUT_OP POUT_OP Limiting 1 1 1 1 1 _FAULT _FAULT _WARN _FAULT Fault _FAULT _WARN 1 Mode (1) Not supported STATUS_INPUT [0x7C] Command support: VIN_OV_FAULT support, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r/ reset(1) r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset Unit Off VIN_OV VIN_OV VIN_UV VIN_UV IIN_OC IIN_OC PIN_OP Function (low input 1 1 1 1 1 _FAULT _WARN _WARN _FAULT _FAULT _WARN _WARN voltage) (1) Not supported STATUS_TEMPERATURE [0x7D] Command support: OT_WARN, OT_FAULT supported, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r/ reset(1) r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset 1 1 Function OT_ FAULT OT_ WARN UT_ WARN UT_ FAULT reserved reserved reserved reserved (1) Not supported May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 24 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output STATUS_CML [0x7E] Command support: PEC_FAULT, INVALID_DATA, INVALID_CMD supported, all bit reset supported Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r/ reset(1) r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset r/ reset Memory/ INVALID INVALID MEMORY PROC COM FAULT Function PEC FAILED reserved Logic fault 1 1 1 CMD DATA FAULT FAULT (other) 1 (other) (1) Not supported READ_VIN [0x88] Command support: full support READ_VOUT [0x8B] Command support: full support READ_IOUT [0x8C] Command support: full support READ_TEMPERATURE_1 [0x8D] Command support: full support MFR_DEVICE_TYPE [0xD0] Command support: partial support in place (Mod Name) Format Unsigned Binary Bit Pos. 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 Access r/w r/w r/w r/w r/w r r r r/w r/w r/w r/w r/w r/w r/w r/w Function Reserved Module Name WPE Res Default 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 Byte Bit Description Value Meaning High Byte 7:0 Reserved 1 7:2 Module Name 1xxxxx Module Name 0 Write Protect Enable not active. Low Byte 1 WPE 1 Write Protect Enable active. 0 Reserved 0 Reserved 1. Present module designations (Non-isolated units will have a 0XXXXX format) a. QBDW033A0B4xxx: 100000 b. QBDW025A0B4xxx: 100001 c. EBDW025A0B4xxx: 100010 d. EBDW020A0B4xxx: 100011 MFR_VOUT_READ_CAL_GAIN [0xD1] Factory default: 0x2000 Range limits (max/min): 0x2666/0x1999 Units: N/A Command support: support for VOUT gain calibration (factor in flash), lockout per MFR_DEVICE_TYPE MFR_VOUT_READ_CAL_OFFSET [0xD2] Range limits (max/min): exp must = -12 Units: N/A Command support: support for VOUT offset calibration (factor in flash), lockout per MFR_DEVICE_TYPE MFR_VIN_READ_CAL_GAIN [0xD3] Factory default: 0X2000 Range limits (max/min): 0x2666/0x1999 Command support: support for VIN gain calibration (factor in flash), lockout per MFR_DEVICE_TYPE May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 25 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output MFR_VIN_READ_CAL_OFFSET [0xD4] Data format: VIN linear format Range limits (max/min): exp must = -3 Units: N/A Command support: support for VIN offset calibration (factor in flash), lockout per MFR_DEVICE_TYPE MFR_IOUT_CAL_GAIN [0xD6] Range limits (max/min): 0x2666/0x1999 Units: N/A Command support: support for IOUT gain calibration, lockout per MFR_DEVICE_TYPE MFR_IOUT_CAL_OFFSET [0xD7] Range limits (max/min): exp must = -4 Units: N/A Command support: support for IOUT offset calibration, lockout per MFR_DEVICE_TYPE MFR_FW_REV [0xDB] Range limits (max/min): 0 - 0xff (0.00 – 15.15) Units: N/A Command support: full read support MFR_C1_C2_ARA_CONFIG [0xE0] Command Code Command support: Full support. Command MFR_C1_C2_ARA_CONFIG Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r/w r/w r/w r/w r/w Function Reserved ARA Assignment Table Default Value 0 0 0 0 0 0 0 0 Bit Description Value Meaning 7:5 Reserved 000 Reserved ARA not functional, module remains at resistor programmed address when SMBLAERT 0 is asserted 4 ARA 1 ARA functional, module responds to ARA only, when SMBLAERT is asserted T/C1 pin: ON/OFF (Secondary) 0000 C2 pin: POWER_GOOD PIN T/C1 pin: TRIM 3:0 0001 Configuration* C2 pin: POWER_GOOD T/C1 pin: TRIM 0010 C2 pin: ON/OFF (Secondary) * All QBDW without –P option Bit Description Value Meaning 7:5 Reserved 000 Reserved ARA not functional, module remains at resistor programmed address when SMBLAERT 0 is asserted 4 ARA 1 ARA functional, module responds to ARA only, when SMBLAERT is asserted PIN T/C1 pin: ON/OFF (Secondary) 3:0 0000 Configuration** C2 pin: POWER_GOOD ** All QBDW with –P option May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 26 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output MFR_ C2_LOGIC [0xE1] Command Code Command support: full support (bits 0 and 1) as follows: Command MFR_C2_LOGIC Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r/ w r/ w Function Reserved On/Off(primary & secondary) combination logic Default Value 0 0 0 0 0 0 0 0 Bit Description Value Meaning 7:2 Reserved 000000 Reserved 0 Secondary side on/off pin state when mapped to either T/C1 or C2 is ignored ON/OFF 1 Configuration 1 AND – Primary and Secondary side on/off 0 Negative Logic (Low Enable: Input < 0.8V wrt Vout(-) Secondary Side 0 ON/OFF Logic 1 Positive Logic (High Enable: Input > 2.0V wrt Vout(-) MFR_PGOOD_POLARITY [0xE2] Command support: full support (bit 0) as follows: Bit 0: 0 = Negative PGOOD logic (module PGOOD asserted when pin is LO, PGOOD de-asserted when pin is HI) 1 = Positive PGOOD logic (module PGOOD de-asserted when pin is LO, PGOOD asserted when pin is HI) Command MFR_PGOOD_POLARITY Format 8 bit unsigned (bit field) Bit Position 7 6 5 4 3 2 1 0 Access r r r r r r r r/w Function Reserved logic Default Value 0 0 0 0 0 0 0 1 MFR_MODULE_DATE_LOC_SN [0xF0] Command support: read/write support for 12 byte block, lockout per MFR_DEVICE_TYPE May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 27 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output PMBus Command Quick Reference Table CMD DATA DATA TRANSFER PMBUS CMD DATA FORMAT DEFAULT VALUE CODE BYTES UNITS TYPE OPERATION 0x01 1 Bit field N/A R/W byte 0x80 0x1D (Neg Logic) ON_OFF_CONFIG 0x02 1 Bit field N/A R/W byte 0x1F (Pos Logic) CLEAR_FAULTS 0x03 0 N/A N/A Send byte none STORE_DEFAULT_ALL 0x11 0 N/A N/A Send byte none RESTORE_DEFAULT_ALL 0x12 0 N/A N/A Send byte none VOUT_MODE 0x20 1 mode + exp N/A Read byte 0x14 VOUT_COMMAND 0x21 2 VOUT linear Volts R/W word 12.000V VOUT_CAL_OFFSET 0x23 2 VOUT linear Volts R/W word MS VOUT_MARGIN_HIGH 0x25 2 VOUT linear Volts R/W word 12.600V VOUT_MARGIN_LOW 0x26 2 VOUT linear Volts R/W word 11.400V VOUT_DROOP 0x28 2 VOUT linear mV/A R/W word 0 VIN_ON 0x35 2 VIN linear v R/W word 35.000V VIN_OFF 0x36 2 VIN linear v R/W word 33.000V VOUT_OV_FAULT_LIMIT 0x40 2 VOUT linear v R/W word 15.000V VOUT_OV_FAULT_RESPONSE 0x41 1 Bit field N/A R/W byte 0xB8 IOUT_OC_FAULT_LIMIT 0x46 2 IOUT linear Amps R/W word 40.000A IOUT_OC_FAULT_RESPONSE 0x47 1 Bit field N/A R/W byte 0xF8 IOUT_OC_WARN_LIMIT 0x4A 2 IOUT linear Amps R/W word 36.000A OT_FAULT_LIMIT 0x4F 2 TEMP linear Deg. C R/W word 140C OT_FAULT_RESPONSE 0x50 1 Bit field N/A R/W byte 0xB8 OT_WARN_LIMIT 0x51 2 TEMP linear Deg. C R/W word 125C VIN_OV_FAULT_LIMIT 0x55 2 VIN linear v R/W word 85V VIN_OV_FAULT_RESPONSE 0x56 1 Bit field N/A R/W byte 0xC0 POWER_GOOD_ON 0x5E 2 VOUT linear v R/W word 10.100V POWER_GOOD_OFF 0x5F 2 VOUT linear V R/W word 8.500V TON_DELAY 0x60 2 Time linear msec R/W word 10ms TON_RISE 0x61 2 Time linear msec R/W word 15ms STATUS_WORD 0x79 2 Bit field N/A Read word N/A STATUS_VOUT 0x7A 1 Bit field N/A Read byte N/A STATUS_IOUT 0x7B 1 Bit field N/A Read byte N/A STATUS_INPUT 0x7C 1 Bit field N/A Read byte N/A STATUS_TEMPERATURE 0x7D 1 Bit field N/A Read byte N/A STATUS_CML 0x7E 1 Bit field N/A Read byte N/A READ_VIN 0x88 2 VIN linear v Read word N/A READ_VOUT 0x8B 2 VOUT linear v Read word N/A READ_IOUT 0x8C 2 IOUT linear Amps Read word N/A READ_TEMP1 0x8D 2 TEMP linear Deg. C Read word N/A PMBUS_REVISION 0x98 1 Bit Field n/a Read byte 1.2 MFR_DEVICE_TYPE 0xD0 2 Custom N/A R/W word 0x0082 MFR_VOUT_READ_CAL_GAIN 0xD1 2 16 bit unsigned N/A R/W word 0x2000 MFR_VOUT_READ_CAL_OFF 0xD2 2 VOUT linear N/A R/W word MS MFR_VIN_READ_CAL_GAIN 0xD3 2 16 bit unsigned N/A R/W word MS MFR_VIN_READ_CAL_OFF 0xD4 2 VIN linear N/A R/W word MS MFR_IOUT_CAL_GAIN 0xD6 2 16 bit unsigned N/A R/W word MS MFR_IOUT_CAL_OFFSET 0xD7 2 IOUT linear N/A R/W word MS MFR_FW_REV 0xDB 2 8 bit unsigned N/A Read byte 0xMj.Mn.Bh.Bl MFR_C1_C2_ARA_CONFIG 0xE0 1 Bit field N/A R/W byte 0x00 MFR_ C2_LOGIC 0xE1 1 Bit field N/A R/W byte 0x00 MFR_PGOOD _POLARITY 0xE2 1 Bit field N/A R/W byte 0x01 MFR_MOD_DATE_LOC_SN 0xF0 12 8 bit char N/A R/W block YYLLWW123456 MS=Module specific May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 28 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Mechanical Outline for QBDW033A0B Through-hole Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm  0.5 mm [x.xx in.  0.02 in.] (Unless otherwise indicated) x.xx mm  0.25 mm [x.xxx in  0.010 in.] *Top side label includes GE name, product designation, and data code. ** Standard pin tail length. Optional pin tail lengths shown in Table 2, Device Options. TOP VIEW* SIDE VIEW BOTTOM VIEW Pin Number Pin Name 1 VIN(+) 2 ON/OFF 3 VIN(-) 4 VOUT(-) 5 SENSE(-) 6 TRIM/C1 7 SENSE(+) 8 VOUT(+) 9 C2 10 SIG_GND 11 DATA 12 SMBALERT 13 CLK 14 ADDR1 15 ADDR0 May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 29 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Mechanical Outline for QBDW033A0B–H (Baseplate version) Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm  0.5 mm [x.xx in.  0.02 in.] (Unless otherwise indicated) x.xx mm  0.25 mm [x.xxx in  0.010 in.] *Side label includes product designation, and data code. ** Standard pin tail length. Optional pin tail lengths shown in Table 2, Device Options. ***Bottom label includes GE name, product designation, and data code TOP VIEW SIDE VIEW* BOTTOM VIEW*** Pin Number Pin Name 1 VIN(+) 2 ON/OFF 3 VIN(-) 4 VOUT(-) 5 SENSE(-) 6 TRIM/C1 7 SENSE(+) 8 VOUT(+) 9 C2 10 SIG_GND 11 DATA 12 SMBALERT 13 CLK 14 ADDR1 15 ADDR0 May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 30 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Recommended Pad Layouts Dimensions are in millimeters and [inches]. Tolerances: x.x mm  0.5 mm [x.xx in.  0.02 in.[ (unless otherwise indicated) x.xx mm  0.25 mm [x.xxx in  0.010 in.] Through-Hole Modules Pin Number Pin Name 1 VIN(+) 2 ON/OFF 3 VIN(-) 4 VOUT(-) 5 SENSE(-) 6 TRIM/C1 7 SENSE(+) 8 VOUT(+) 9 C2 10 SIG_GND 11 DATA 12 SMBALERT 13 CLK 14 ADDR1 15 ADDR0 Hole and Pad diameter recommendations: Pin Number Hole Dia mm [in] Pad Dia mm [in] 1, 2, 3, 5, 6, 7 1.6 [.063] 2.1 [.083] 4, 8 2.2 [.087] 3.2 [.126] 9, 10, 11, 12, 13, 14, 15 1.0 [.039] 1.5 [.059] May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 31 Data Sheet GE QBDW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 1. Device Codes Output Output Connector Product codes Input Voltage Efficiency Comcodes Voltage Current Type QBDW033A0B41Z 48V (3675Vdc) 12V 33A 95.3% Through hole CC109159307 QBDW033A0B641Z 48V (3675Vdc) 12V 33A 95.3% Through hole CC109168885 QBDW033A0B41-HZ 48V (3675Vdc) 12V 33A 95.3% Through hole CC109163300 QBDW033A0B41-PHZ 48V (3675Vdc) 12V 33A 95.3% Through hole CC109158903 QBDW033A0B641-HZ 12V 33A 95.3% Through hole CC109170172 48V (3675Vdc) QBDW033A0B641-PHZ 48V (3675Vdc) 12V 33A 95.3% Through hole CC109170503 Table 2. Device Options Contact Us For more information, call us at USA/Canada: +1 888 546 3243, or +1 972 244 9288 Asia-Pacific: +86.021.54279977*808 Europe, Middle-East and Africa: +49.89.878067-280 India: +91.80.28411633 www.ge.com/powerelectronics May 9, 2013 ©2012 General Electric Company. All rights reserved. Version 1.41