Data Sheet GE QBVW033A0B 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  Compatible with reflow pin/paste soldering process  High and flat efficiency profile >95.5% at 12V , 30% load to dc 100% output  Wide Input voltage range: 36-75Vdc  Delivers up to 33Adc output current  Fully very tightly regulated output voltage  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)  Constant switching frequency Applications  Positive Remote On/Off logic  Distributed power architectures  Output over current/voltage protection  Intermediate bus voltage applications  Over temperature protection  Servers and storage applications  Wide operating temperature range (-40°C to 85°C)  Networking equipment including Power over Ethernet # †  ANSI/ UL 60950-1-2011 Recognized, CAN/CSA C22.2 (PoE) No.60950-1-07, Second Edition + A1:2011 (MOD) Certified IEC  Fan assemblies and other systems requiring a tightly 60950-1:2005 (2nd edition) + A1:2009 and EN 60950-1:2006 + regulated output voltage A11:2009 + A1:2010 + A12:2011, and VDE‡ 0805-1 Licensed §  CE mark to 2006/96/EC directive Options  Meets the voltage and current requirements for ETSI 300-132-  Negative Remote On/Off logic (1=option code, factory 2 and complies with and licensed for Basic insulation rating preferred) per EN60950-1  Auto-restart after fault shutdown (4=option code, ¤  2250 Vdc Isolation tested in compliance with IEEE 802.3 PoE factory preferred) standards  Remote Sense and Output Voltage Trim (9=option  ISO** 9001 and ISO14001 certified manufacturing facilities code)  Base plate option (-H=option code)  Passive Droop Load Sharing (-P=option code) Description The QBVW033A0B series of dc-dc converters are a new generation of fully regulated DC/DC power modules designed to support 12Vdc intermediate bus applications where multiple low voltages are subsequently generated using point of load (POL) converters, as well as other application requiring a tightly regulated output voltage. The QBVW033A0B series operate from an input voltage range of 36 to 75Vdc and provide up to 33A output current at output voltages of 12V in an industry standard, dc DOSA compliant quarter brick. The converter incorporates digital control, synchronous rectification technology, a fully regulated control topology, and innovative packaging techniques to achieve efficiency exceeding 96% at 12V output. This leads to lower power dissipations such that for many applications a heat sink is not required. Standard features include on/off control, output overcurrent and over voltage protection, over temperature protection, input under and over voltage lockout. 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 # 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 21, 2013 ©2012 General Electric Company. All rights reserved. Page 1 Data Sheet GE QBVW033A0B 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 V -0.3 75 V IN dc Operating transient ≤ 100mS 100 V dc Non- operating continuous V 80 100 V IN dc Operating Ambient Temperature All TA -40 85 °C (See Thermal Considerations section) 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 (VIN=0V to 75V, IO=IO, 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 (V = V , module disabled) IN IN, nom 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 - mArms and input capacitance) 5Hz to 20MHz, VIN= 48V, IO= IOmax Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12μH source impedance; V = 48V, I = I ; see All - 40 - mA IN O Omax p-p Figure 11) 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 in the ungrounded input lead of the power supply (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 21, 2013 ©2012 General Electric Company. All rights reserved. Page 2 Data Sheet GE QBVW033A0B 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 (V =V , I =16.5A, T=25°C) All V 11.97 12.00 12.03 V IN IN,nom O A O, set dc All w/o P V 11.76 12.24 V O  dc Output Voltage Option (Over all operating input voltage (40V to 75V), resistive load, and All w/ P 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] All w/o 9 Line (VIN= VIN, min to VIN, max)  0.2  % VO, set option All w/ 9 Line (V = V to V ) 0.5 % V IN IN, min IN, max   O, set option All w/o P or Load (I =I to I ) 0.2 % V O O, min O, max   O, set 9 option All w/ 9 Load (I =I to I ) 1.2 % V O O, min O, max   O, set option All w/ P Load (I =I to I ), Intentional Droop 0.50 V O O, min O, max   dc Option Temperature (TA = -40ºC to +85ºC) All  2  % VO, 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 For CO >5000uF, IO must be < 50% IO, max during Trise. All CO, max 0  10,000 μF When 2 or more modules are in parallel -P Option 0 15,000 μF Output Current All IO 0 33 Adc Output Current Limit Inception All IO,lim  40  Adc Efficiency (V =V , T=25°C) IN IN, nom A IO=100% IO, max, VO= VO,set All 95.5 I =40% I to 75% I V = V All η 96.0 % O O, max O, max , O O,set Switching Frequency fsw 150 kHz 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 mV Vpk  500  pk Peak Deviation All t 700 s __ __ s Settling Time (VO <10% peak deviation) Load Change from IO = 75% to 50% of IO,max: Peak Deviation All V __ 500 __ mV pk pk Settling Time (V <10% peak deviation) t __ 700 s O s General Specifications Parameter Symbol Device Typ Unit Calculated Reliability Based upon Telcordia SR-332 Issue 2: MTBF All 3,108,685 Hours Method I, Case 3, (IO=80%IO, max, TA=40°C, Airflow = 200 LFM), 90% 9 FIT All 321.7 10 /Hours confidence Weight – Open Frame 47.4 (1.67) g (oz.) Weight – with Base plate option 66.4 (2.34) g (oz.) May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 3 Data Sheet GE QBVW033A0B 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 Ciso  1000  pF Isolation Resistance Riso 10   MΩ 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 (VIN=VIN, min to VIN, max , Signal referenced to VIN- terminal) 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 V 2.0 14.5 V on/off  dc Logic High maximum allowable leakage current All Ion/off   10 μA (V = 2.0V) on/off Maximum voltage allowed on On/Off pin All V 14.5 V on/off   dc Turn-On Delay and Rise Times (I =I) O O, max All w/o P T Enable with Vin 150 ms delay,   option Tdelay=Time until VO = 10% of VO,set from either application of Vin All w/o P Tdelay, Enable with 10 ms with Remote On/Off set to On (Enable with Vin); or operation of   on/off option Remote On/Off from Off to On with Vin already applied for at All w/ P least 150 milli-seconds (Enable with on/off). T , Enable with Vin 180* ms delay   option * Increased Tdelay due to startup for parallel modules. All w/ P Tdelay, Enable with 40* ms   on/off option T =Time for V to rise from 10% to 90% of V , For C All w/o P rise O O,set O Trise   15 ms >5000uF, I must be < 50% I during T . option O O, max rise * Increased Trise when pre-bias Vo exists at startup for All w/ P Trise   300* ms parallel modules. option All w/ 9 Remote Sense Range VSense   0.5 Vdc option Load Sharing Current Balance (difference in output current across all modules with outputs in P Option I 3 A diff parallel, no load to full load) All w/ 9 Output Voltage Adjustment range VO, set 8.1 13.2 Vdc option All w/o 9 VO,limit 14.5 17.0 Vdc option Output Overvoltage Protection All w/ 9 VO,limit VO,set+2.5V VO,set+5.0V Vdc option Overtemperature Protection All Tref  140  °C (See Feature Descriptions) Input Undervoltage Lockout Turn-on Threshold (Default) 33 35 36 V dc Turn-off Threshold (Default) 31 33 34 Vdc Input Overvoltage Lockout Turn-off Threshold (Default) 86 V   dc Turn-on Threshold (Default) 76 79  V dc May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 4 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Characteristic Curves, 12V Output dc The following figures provide typical characteristics for the QBVW033A0B (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 (2s/div) TIME, t (500 μs/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 21, 2013 ©2012 General Electric Company. All rights reserved. Page 5 OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE, INPUT CURRENT, Ii (A) V (V) (5V/div) V (V) (20V/div) O IN V (V) (50mV/div) O η OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT CURRENT OUTPUT VOLTAGE VO (V) (5V/div) VON/OFF (V)(2V/div) IO (A) (10A/div) VO (V) (200mV/div) Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Characteristic Curves, 12V Output (continued) dc INPUT VOLTAGE, V (V) OUTPUT CURRENT, I (A) in O Figure 7. Typical Output Voltage Regulation vs. Input Figure 8. Typical Output Voltage Regulation vs. Output Voltage. Current. INPUT VOLTAGE, V (V) OUTPUT CURRENT, I (A) in O Figure 9. Typical Output Voltage Regulation vs. Input Figure 10. Typical Output Voltage Regulation vs. Output Voltage for the –P Version. Current for the –P Version. . May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 6 OUTPUT VOLTAGE, VO (V) OUTPUT VOLTAGE, VO (V) OUTPUT VOLTAGE, V (V) O OUTPUT VOLTAGE, V (V) O Data Sheet GE QBVW033A0B 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. Highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 11, a 100μF electrolytic capacitor, Cin, (ESR<0.7 at 100kHz), mounted close to the power module helps ensure the stability of the unit. Safety Considerations For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of Note: Measure input reflected-ripple current with a simulated the end-use safety agency standard, i.e., ANSI/ UL* 60950-1- † source inductance (LTEST) of 12 µH. Capacitor CS offsets 2011 Recognized, CAN/CSA C22.2 No.60950-1-07, Second Edition + A1:2011 (MOD) Certified IEC 60950-1:2005 (2nd edition) possible battery impedance. Measure current as shown above. + A1:2009 and EN 60950-1:2006 + A11:2009 + A1:2010 + Figure 11. Input Reflected Ripple Current Test Setup. A12:2011, and VDE‡ 0805-1 Licensed 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 V pin and one V pin are to be grounded, or both IN OUT the input and output pins are to be kept floating.  The input pins of the module are not operator accessible.  Another SELV reliability test is conducted on the whole Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or system (combination of supply source and subject tantalum capacitor. Scope measurement should be made module), as required by the safety agencies, to verify that using a BNC socket. Position the load between under a single fault, hazardous voltages do not appear at 51 mm and 76 mm (2 in. and 3 in.) from the module. the module’s output. Note: Do not ground either of the input pins of the module Figure 12. Output Ripple and Noise Test Setup. without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground. CONTACT AND DISTRIBUTION LOSSES The power module has safety extra-low voltage (SELV) outputs VO1 VI(+) when all inputs are SELV. IO II The input to these units is to be provided with a maximum 30 A LOAD SUPPL Y fast-acting (or time-delay) fuse in the ungrounded input lead. VI(–) VO2 CONT ACT RESIST ANCE Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. Figure 13. Output Voltage and Efficiency Test Setup. May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 7 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Feature Descriptions Output Overvoltage Protection Overcurrent Protection The module contains circuitry to detect and respond to output To provide protection in a fault output overload condition, the overvoltage conditions. If the overvoltage condition causes the module is equipped with internal current-limiting circuitry and output voltage to rise above the limit in the Specifications can endure current limiting continuously. If the overcurrent Table, the module will shut down and remain latched off. The condition causes the output voltage to fall greater than 4.0V overvoltage latch is reset by either cycling the input power, or from Vo,set, the module will shut down and remain latched off. by toggling the on/off pin for one second. If the output The overcurrent latch is reset by either cycling the input power overvoltage condition still exists when the module restarts, it or by toggling the on/off pin for one second. If the output will shut down again. This operation will continue indefinitely overload condition still exists when the module restarts, it will until the overvoltage condition is corrected. shut down again. This operation will continue indefinitely until the overcurrent condition is corrected. A factory configured auto-restart option (with overcurrent and overvoltage auto-restart managed as a group) is also available. A factory configured auto-restart option (with overcurrent and An auto-restart feature continually attempts to restore the overvoltage auto-restart managed as a group) is also available. operation until fault condition is cleared. An auto-restart feature continually attempts to restore the operation until fault condition is cleared. Overtemperature Protection Remote On/Off These modules feature an overtemperature protection circuit to safeguard against thermal damage. The circuit shuts down The module contains a standard on/off control circuit reference the module when the maximum device reference temperature to the VIN(-) terminal. Two factory configured remote on/off is exceeded. The module will automatically restart once the logic options are available. Positive logic remote on/off turns reference temperature cools by ~25°C. the module on during a logic-high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote on/off turns Input Under/Over voltage Lockout the module off during a logic high, and on during a logic low. At input voltages above or below the input under/over voltage Negative logic, device code suffix "1," is the factory-preferred lockout limits, module operation is disabled. The module will configuration. The On/Off circuit is powered from an internal begin to operate when the input voltage level changes to within bias supply, derived from the input voltage terminals. To turn the under and overvoltage lockout limits. the power module on and off, the user must supply a switch to control the voltage between the On/Off terminal and the VIN(-) Load Sharing terminal (Von/off). The switch can be an open collector or For higher power requirements, the QBVW033A0 power module equivalent (see Figure 14). A logic low is V = -0.3V to 0.8V. on/off offers an optional feature for parallel operation (-P Option The typical I during a logic low (Vin=48V, On/Off on/off code). This feature provides a precise forced output voltage Terminal=0.3V) is 147µA. The switch should maintain a logic- load regulation droop characteristic. The output set point and low voltage while sinking 310µA. During a logic high, the droop slope are factory calibrated to insure optimum matching maximum V generated by the power module is 8.2V. The on/off of multiple modules’ load regulation characteristics. To maximum allowable leakage current of the switch at Von/off = implement load sharing, the following requirements should be 2.0V is 10µA. If using an external voltage source, the maximum followed: voltage Von/off on the pin is 14.5V with respect to the VIN(-) terminal.  The VOUT(+) and VOUT(-) pins of all parallel modules must be connected together. Balance the trace resistance for each If not using the remote on/off feature, perform one of the module’s path to the output power planes, to insure best load following to turn the unit on: sharing and operating temperature balance. For negative logic, short ON/OFF pin to VIN(-).  V must remain between 40V and 75V for droop sharing to IN dc dc For positive logic: leave ON/OFF pin open. be functional.  It is permissible to use a common Remote On/Off signal to start all modules in parallel.  These modules contain means to block reverse current flow upon start-up, when output voltage is present from other parallel modules, thus eliminating the requirement for external output ORing devices. Modules with the –P option may automatically increase the Turn On delay, T , as specified in delay the Feature Specifications Table, if output voltage is present on the output bus at startup.  When parallel modules startup into a pre-biased output, e.g. Figure 14. Remote On/Off Implementation. partially discharged output capacitance, the Trise is automatically increased, as specified in the Feature Specifications Table, to insure graceful startup. May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 8 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output point. To maintain set point accuracy, the trim resistor Feature Descriptions (continued) tolerance should be ±1.0%.  Insure that the total load is <50% I (for a single module) O,MAX The following equation determines the required external until all parallel modules have started (load full start > module resistor value to obtain a percentage output voltage change of T time max + T time). delay rise ∆%:  If fault tolerance is desired in parallel applications, output 511   R   10 .22  ORing devices should be used to prevent a single module trimdown    %   failure from collapsing the load bus. V V  o,set desired   %  100 Remote Sense (“9” Option Code)   V  o,set  Where Remote sense minimizes the effects of distribution losses by For example, to trim-down the output voltage of the 12V regulating the voltage at the remote-sense connections (See nominal module by 20% to 9.6V, Rtrim-down is calculated as Figure 15). The SENSE(-) pin should be always connected to VO(– follows: ).The voltage between the remote-sense pins and the output % 20 terminals must not exceed the output voltage sense range given in the Feature Specifications table: 511  R  10.22 trimdown   [VO(+) – VO(–)] – [SENSE(+) ]  0.5 V 20   Although the output voltage can be increased by both the R  15.3k remote sense and by the trim, the maximum increase for the trimdown output voltage is not the sum of both. The maximum increase is Connecting an external resistor (R ) between the TRIM pin trim-up the larger of either the remote sense or the trim. and the V (+) (or Sense (+)) pin increases the output voltage set O The amount of power delivered by the module is defined as the point. The following equations determine the required external voltage at the output terminals multiplied by the output resistor value to obtain a percentage output voltage change of current. When using remote sense and trim, the output voltage ∆%: of the module can be increased, which at the same output 5.11V  (100%)  511  o,set R    10.22  current would increase the power output of the module. Care trimup   1.225% %   should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power V V  desired o,set   %  100 (Maximum rated power = V x I ). o,set o,max   V o,set   Where For example, to trim-up the output voltage of the 12V module by 5% to 12.6V, Rtrim-up is calculated is as follows:  %  5  5.11 12 .0 (100 5) 511  R    10 .22  trimup   1.225 5 5   R  938.8 trimup The voltage between the Vo(+) and Vo(–) terminals must not exceed the minimum output overvoltage protection value Figure 15. Circuit Configuration for remote sense. shown in the Feature Specifications table. This limit includes Trim, Output Voltage Adjust (“9” Option Code) any increase in voltage due to remote-sense compensation and output voltage set-point adjustment trim. VO(+) Although the output voltage can be increased by both the R trim-up QBVW033A0 remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is LOAD TRIM the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the R trim-down output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can V (-) O be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains Figure 16. Circuit Configuration to Trim Output Voltage. at or below the maximum rated power (Maximum rated power Trimming allows the output voltage set point to be increased or = V x I ). O,set O,max decreased; this is accomplished by connecting an external resistor between the TRIM pin and either the VO(+) pin or the VO(-) pin. Connecting an external resistor (R ) between the TRIM pin trim-down and the Vo(-) (or Sense(-)) pin decreases the output voltage set May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 9 Data Sheet GE QBVW033A0B 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 a TH for open frame module. 1 family of module output derating curves is obtained. Figure 18. Location of the thermal reference temperature TH for base plate module. 2 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 Characterization The power modules operate in a variety of thermal Process For Open-Frame Board-Mounted Power Modules” for a environments and sufficient cooling should be provided to help detailed discussion of thermal aspects including maximum ensure reliable operation. Thermal considerations include device temperatures. ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating Heat Transfer via Convection temperature of the module will result in an increase in Increased airflow over the module enhances the heat transfer reliability. via convection. The thermal derating of figure 19- 23 shows Heat-dissipating components are mounted on the top side of the maximum output current that can be delivered by each the module. Heat is removed by conduction, convection and module in the indicated orientation without exceeding the radiation to the surrounding environment. Proper cooling can maximum THx temperature versus local ambient temperature be verified by measuring the thermal reference temperature (TA) for several air flow conditions. (TH1 or TH2). Peak temperature occurs at the position indicated in Figure 17 and 18. For reliable operation this temperature The use of Figure 19 is shown in the following example: should not exceed TH1=125°C or TH2=105°C. For extremely high Example reliability you can limit this temperature to a lower value. What is the minimum airflow necessary for a QBVW033A0B operating at VI = 48 V, an output current of 20A, and a 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 21, 2013 ©2012 General Electric Company. All rights reserved. Page 10 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Thermal Considerations (continued) LOCAL AMBIENT TEMPERATURE, TA (C) LOCAL AMBIENT TEMPERATURE, TA (C) 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, T (C) LOCAL AMBIENT TEMPERATURE, T (C) A A 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, TA (C) COLD WALL TEMPERATURE, TC (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 21, 2013 ©2012 General Electric Company. All rights reserved. Page 11 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Layout Considerations The QBVW033 power module series are low profile in 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 Figure 25. Recommended linear reflow profile using the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant Sn/Ag/Cu solder. components. The module is designed to be processed through single or dual wave soldering machines. The pins MSL Rating have a RoHS-compliant, pure tin finish that is compatible with both Pb and Pb-free wave soldering processes. A The QBVW033A0B modules have a MSL rating of 2a. maximum preheat rate of 3C/s is suggested. The wave preheat process should be such that the temperature of the Storage and Handling power module board is kept below 210C. For Pb solder, the The recommended storage environment and handling recommended pot temperature is 260C, while the Pb-free procedures for moisture-sensitive surface mount packages solder pot is 270C max. is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Reflow Lead-Free Soldering Information Devices). Moisture barrier bags (MBB) with desiccant are The RoHS-compliant through-hole products can be required for MSL ratings of 2 or greater. These sealed processed with the following paste-through-hole Pb or Pb- packages should not be broken until time of use. Once the free reflow process. original package is broken, the floor life of the product at Max. sustain temperature : conditions of 30°C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life 245C (J-STD-020C Table 4-2: Packaging Thickness>=2.5mm 3 for dry packed SMT packages will be a minimum of 12 / Volume > 2000mm ), months from the bag seal date, when stored at the following Peak temperature over 245C is not suggested due to the conditions: < 40° C, < 90% relative humidity. potential reliability risk of components under continuous high-temperature. Post Solder Cleaning and Drying Min. sustain duration above 217C : 90 seconds Considerations Min. sustain duration above 180C : 150 seconds Max. heat up rate: 3C/sec Post solder cleaning is usually the final circuit-board Max. cool down rate: 4C/sec assembly process prior to electrical board testing. The result In compliance with JEDEC J-STD-020C spec for 2 times of inadequate cleaning and drying can affect both the reflow requirement. reliability of a power module and the testability of the finished circuit-board assembly. For guidance on Pb-free Reflow Profile appropriate soldering, cleaning and drying procedures, refer BMP module will comply with J-STD-020 Rev. C to GE Board Mounted Power Modules: Soldering and (Moisture/Reflow Sensitivity Classification for Cleaning Application Note (AN04-001). Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification If additional information is needed, please consult with your procedures. BMP will comply with JEDEC J-STD-020C GE representative for more details. specification for 3 times reflow requirement. The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Figure 24. May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 12 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output EN55022 Class A. For further information on designing for EMC Considerations EMC compliance, please refer to the FLT012A0Z data sheet. The circuit and plots in Figure 25 shows a suggested configuration to meet the conducted emission limits of Figure 26. EMC Considerations May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 13 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Mechanical Outline for QBVW033A0B 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 Pin Number Name 1* VIN(+) 2* ON/OFF 3* VIN(-) 4* VOUT(-) 5† SENSE(-) 6† TRIM 7† SENSE(+) 8* VOUT(+) † - Optional Pins See Table 2 May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 14 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Mechanical Outline for QBVW033A0B-H (Base plate) 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.] *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 Pin Number Name 1* VIN(+) 2* ON/OFF 3* VIN(-) 4* VOUT(-) 5† SENSE(-) 6† TRIM 7† SENSE(+) 8* VOUT(+) † - Optional Pins See Table 2 May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 15 Data Sheet GE QBVW033A0B 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 Pin Number Name 1* VIN(+) 2* ON/OFF 3* VIN(-) 4* VOUT(-) 5† SENSE(-) 6† TRIM 7† SENSE(+) 8* VOUT(+) † - Optional Pins See Table 2 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] May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 16 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output Packaging Details All versions of the QBVW033A0Bare supplied as standard in the plastic trays shown in Figure 27. Tray Specification Material PET (1mm) 9 11 Max surface resistivity 10 -10 /PET Color Clear Capacity 12 power modules Min order quantity 24 pcs (1 box of 2 full trays + 1 empty top tray) Each tray contains a total of 12 power modules. The trays are self-stacking and each shipping box for the QBVW033A0B module contains 2 full trays plus one empty hold-down tray giving a total number of 24 power modules. Open Frame Module Tray Base Plate Module Tray Figure 27. QBVW033 Packaging Tray May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 17 Data Sheet GE QBVW033A0B 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 QBVW033A0B41Z 48V (3675Vdc) 12V 33A 95.5% Through hole CC109165247 QBVW033A0B64Z 48V (3675Vdc) 12V 33A 95.5% Through hole 150023767 QBVW033A0B541Z 12V 33A 95.5% Through hole CC109165263 48V (3675Vdc) QBVW033A0B641Z 48V (3675Vdc) 12V 33A 95.5% Through hole CC109165692 QBVW033A0B841Z 12V 33A 95.5% Through hole CC109169347 48V (3675Vdc) QBVW033A0B1-HZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109168126 QBVW033A0B41-HZ 12V 33A 95.5% Through hole CC109165255 48V (3675Vdc) QBVW033A0B61-HZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109167813 QBVW033A0B64-HZ 12V 33A 95.5% Through hole 150023766 48V (3675Vdc) QBVW033A0B641-HZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109165701 QBVW033A0B841-HZ 12V 33A 95.5% Through hole 150027041 48V (3675Vdc) QBVW033A0B941-HZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109170627 QBVW033A0B964-HZ 48V (3675Vdc) 12V 33A 95.5% Through hole 150026356 QBVW033A0B9641-HZ 48V (3675Vdc) 12V 33A 95.5% Through hole 150019350 QBVW033A0B41-PZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109169314 QBVW033A0B541-PZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109167086 QBVW033A0B841-PZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109169355 QBVW033A0B1-PHZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109167094 QBVW033A0B41-PHZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109167103 QBVW033A0B61-PHZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109167111 QBVW033A0B641-PHZ 48V (3675Vdc) 12V 33A 95.5% Through hole CC109167540 Table 2. Device Options May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 18 Data Sheet GE QBVW033A0B Barracuda Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output 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 21, 2013 ©2012 General Electric Company. All rights reserved. Version 1.42