Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Features  Compliant to RoHS EU Directive 2011/65/EU (-Z versions)  Compliant to RoHS EU Directive 2011/65/EU under exemption 7b (Lead solder exemption). Exemption 7b will expire after June 1, 2016 at which time this product will no longer be RoHS compliant (non-Z versions)  Delivers up to 30A of output current  High efficiency – 92% @ 1.8V full load (VIN=3.3Vdc)  Input voltage range from 2.7V to 4.0Vdc  Output voltage programmable from 0.8 to 2.0Vdc  Small size and low profile: o 33.0 mm x 9.1 mm x 13.5 mm o (1.30 in. x 0.36 in. x 0.53 in.) RoHS Compliant  Monotonic start-up into pre-biased output TM  Output voltage sequencing (EZ-SEQUENCE )  Remote On/Off  Remote Sense  Over current and Over temperature protection  Parallel operation with active current sharing  Wide operating temperature range (-40°C to 85°C) †  UL* 60950 Recognized, CSA C22.2 No. 60950-00 ‡ rd Certified, and VDE 0805 (EN60950-1 3 edition) Licensed  ISO** 9001 and ISO 14001 certified manufacturing facilities Applications  Distributed power architectures  Intermediate bus voltage applications  Telecommunications equipment  Servers and storage applications  Networking equipment Description The Austin MegaLynx ATM series SMT power modules are non-isolated DC-DC converters in an industry standard package that can deliver up to 30A of output current with a full load efficiency of 92% at 1.8Vdc output voltage (VIN = 3.3Vdc). These modules operate off an input voltage from 2.7 to 4.0Vdc and provide an output voltage that is programmable from 0.8 to 2.0Vdc. They have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple modules on the board. Additional features include remote On/Off, adjustable output voltage, remote sense, over current, over temperature protection and active current sharing between modules. * 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. ** ISO is a registered trademark of the International Organization of Standards January 20, 2016 ©2016 General Electric Company. All rights reserved. Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current 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 the device reliability. Parameter Device Symbol Min Max Unit Input Voltage Continuous All VIN -0.3 4.0 Vdc Sequencing pin voltage All VsEQ -0.3 4.0 Vdc Operating Ambient Temperature All T -40 85 °C A (see Thermal Considerations section) Storage Temperature All T -55 125 °C stg 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 All V 2.7 3.3 4.0 Vdc IN Maximum Input Current All IIN,max 20 Adc (V = V , V = V I =I ) IN IN,min O O,set, O O, max 2 2 Inrush Transient All I t 1 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; V =2.7V to 4.0V, I = I ; See All 100 mAp-p IN O Omax Figure 1) Input Ripple Rejection (120Hz) All 50 dB January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 2 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point All V -1.5 +1.5 % V O, set  O, set (V =V , I =I , T =25°C) IN IN,nom O O, nom ref Output Voltage (Over all operating input voltage, resistive load, and All VO, set –3.0  +3.0 % VO, set temperature conditions until end of life) Adjustment Range Selected by an external resistor All 0.8 2.0 Vdc Output Regulation Line (VIN=VIN, min to VIN, max) All   0.1 % VO, set Load (IO=IO, min to IO, max) All   0.4 % VO, set Temperature (Tref=TA, min to TA, max) All  0.5 1 % VO, set Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max C = 0.1μF // 10 μF ceramic capacitors) OUT Peak-to-Peak (5Hz to 20MHz bandwidth) Vo ≤ 2.0V 50 mV  pk-pk 1 External Capacitance ESR ≥ 1 mΩ All C 0 2,000 μF O, max  ESR ≥ 10 mΩ All C 0 10,000 μF O, max  Output Current Vo ≤ 3.63V I 0 30 Adc o Output Current Limit Inception (Hiccup Mode) All IO, lim 104 140 160 % Iomax Output Short-Circuit Current All I 3.5 Adc O, s/c   (VO≤250mV) ( Hiccup Mode ) Efficiency V = 0.8dc η 83.5 % O,set V = O,set VIN=VIN, nom, TA=25°C η 87.9 % 1.25Vdc I =I V = V V = 1.8Vdc η 91.6 % O O, max , O O,set O,set Switching Frequency, Fixed All fsw  270  kHz Dynamic Load Response (dI /dt=5A/µs; V =V , ; T =25°C) O IN IN nom A Load Change from Io= 50% to 100% of IO,max; No external output capacitors Peak Deviation All Vpk  380  mV Settling Time (V <10% peak deviation) O All ts  50  µs (dI /dt=5A/µs; V =V , ; T =25°C) O IN IN nom A Load Change from IO= 100% to 50%of IO, max: No external output capacitors Peak Deviation All V  380  mV pk Settling Time (VO<10% peak deviation) All t 50 s   µs 1 Note that maximum external capacitance may be lower when sequencing is employed. Please check with your GE Technical representative. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 3 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Dynamic Load Response (dI /dt=5A/µs; V =V , ; T =25°C) O IN IN nom A Load Change from Io= 50% to 100% of Io,max; 2x150 μF polymer capacitor Peak Deviation All Vpk  350  mV Settling Time (V <10% peak deviation) O All ts  40  µs (dI /dt=5A/µs; V =V , ; T =25°C) O IN IN nom A Load Change from Io= 100% to 50%of IO,max: 2x150 μF polymer capacitor Peak Deviation All V  250  mV pk Settling Time (VO<10% peak deviation) All t 60 s   µs General Specifications Parameter Min Typ Max Unit Calculated MTBF (VO= 1.2Vdc, IO= 0.8IO, max, TA=40°C) 3,443,380 Hours Per Telecordia Method 6.2 (0.22) Weight   g (oz.) January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 4 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current 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 On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to GND) Logic High (Module OFF) Input High Current All IIH 0.5 3.3 mA  Input High Voltage All VIH 2.5 V V  IN, max Logic Low (Module ON) Input Low Current All IIL   200 µA Input Low Voltage All VIL -0.3  1.2 V Turn-On Delay and Rise Times (V =V , I =I V to within ±1% of steady state) IN IN, nom O O, max , O Case 1: On/Off input is enabled and then All Tdelay 3.8 4.7 6 msec input power is applied (delay from instant at which V = V until Vo = 10% of Vo, set) IN IN, min All Tdelay 3.8 4.7 6 msec Case 2: Input power is applied for at least one second and then the On/Off input is enabled (delay from instant at which Von/Off is enabled until Vo = 10% of Vo, set) All Trise 2.5 3 3.8 msec Output voltage Rise time (time for Vo to rise from 10% of Vo, set to 90% of Vo, set) Output voltage overshoot 3.0 % VO, set o IO = IO, max; VIN, min – VIN, max, TA = 25 C Remote Sense Range All 0.5 V   Over temperature Protection All T ref  125  °C (See Thermal Consideration section) Sequencing Slew rate capability All dVSEQ/dt — 2 V/msec (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) Sequencing Delay time (Delay from V IN, min TsEQ- to application of voltage on SEQ pin) All 10 msec delay Tracking Accuracy Power-up (2V/ms) All VSEQ –Vo 100 200 mV Power-down (1V/ms) VSEQ –Vo 200 400 mV (VIN, min to VIN, max; IO, min - IO, max VSEQ < Vo) Input Undervoltage Lockout Turn-on Threshold All 2.2 Vdc Turn-off Threshold All 1.7 Vdc Forced Load Share Accuracy -P  10 % Io Number of units in Parallel -P 5 January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 5 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATM030A0X3-SR & -SRH (0.8V, 30A) at 25 C. 95 35 2.5m/s Vin = 3.0V 500 LFM 30 90 25 0.5m/s 1m/s 85 NC Vin = 3.3V 100 LFM 200 LFM Vin = 3.9V 20 1.5m/s 80 300 LFM 15 2.0m/s 75 400 LFM 10 70 5 65 0 0 5 10 15 20 25 30 30 40 50 60 70 80 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 4. Derating Output Current versus Ambient Figure 1. Converter Efficiency versus Output Current. Temperature and Airflow (ATM030A0X3-SR). 35 2.5m/s (500LFM) 30 NC 0.5m/s (100LFM) 25 1m/s (200LFM) 1.5m/s (300LFM) 20 2m/s (400LFM) 15 30 40 50 60 70 80 O TIME, t (1µs/div) AMBIENT TEMPERATURE, T C A Figure 2. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 5. Derating Output Current versus Ambient Io,max). Temperature and Airflow (ATM030A0X3-SRH). TIME, t (50µs /div) TIME, t (5ms/div) Figure 3. Transient Response to Dynamic Load Change from Figure 6. Typical Start-up Using Input Voltage (VIN = VIN,NOM, 0% to 50% to 0% of full load. Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 6 OUTPUT CURRENT, OUTPUT VOLTAGE EFFICIENCY, η (%) IO (A) (5Adiv) VO (V) (200mV/div) OUTPUT VOLTAGE VO (V) (20mV/div) INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) V (V) (1V/div) V (V) (1V/div) IN O Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATM030A0X3-SR and -SRH (1.25V, 30A) at 25 C. 95 35 Vin = 3.0V 2.5m/s 500 LFM 30 90 Vin = 3.3V Vin = 3.9V 25 85 NC 0.5m/s 1m/s 100 LFM 200 LFM 20 1.5m/s 80 300 LFM 15 2.0m/s 75 400 LFM 10 70 5 65 0 0 5 10 15 20 25 30 30 40 50 60 70 80 O AMBIENT TEMPERATURE, T C OUTPUT CURRENT, IO (A) A Figure 10. Derating Output Current versus Ambient Figure 7. Converter Efficiency versus Output Current. Temperature and Airflow (ATM030A0X3-SR). 35 2.5m/s (500LFM) 2m/s (400LFM) 30 NC 0.5m/s (100LFM) 25 1m/s (200LFM) 1.5m/s (300LFM) 20 30 40 50 60 70 80 O AMBIENT TEMPERATURE, TA C TIME, t (1µs/div) Figure 8. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 11. Derating Output Current versus Ambient Io,max). Temperature and Airflow (ATM030A0X3-SRH). TIME, t (5ms/div) TIME, t (50µs /div) Figure 9. Transient Response to Dynamic Load Change from Figure 12. Typical Start-up Using Input Voltage (VIN = 0% to 50% to 0% of full load. VIN,NOM, Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 7 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE I (A) (5Adiv) V (V) (200mV/div) EFFICIENCY, η (%) O O VO (V) (20mV/div) INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) V (V) (1V/div) V (V) (1V/div) IN O Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATM030A0X3-SR and –SRH (1.8V, 30A) at 25 C. 35 100 2.5m/s Vin = 3.0V 500 LFM 30 95 25 0.5m/s 1m/s 90 NC Vin = 3.3V 100 LFM 200 LFM Vin = 3.9V 20 1.5m/s 85 300 LFM 15 2.0m/s 80 400 LFM 10 75 5 70 0 30 40 50 60 70 80 0 5 10 15 20 25 30 O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 16. Output Current Derating versus Ambient Figure 13. Converter Efficiency versus Output Current. Temperature and Airflow (ATM030A0X3-SR). 35 2.5m/s (500LFM) 30 NC 0.5m/s (100LFM) 25 1m/s (200LFM) 1.5m/s (300LFM) 20 2m/s (400LFM) 15 30 40 50 60 70 80 O TIME, t (1µs/div) AMBIENT TEMPERATURE, TA C Figure 14. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 17. Output Current Derating versus Ambient Io,max). Temperature and Airflow (ATM030A0X3-SRH). TIME, t (50µs /div) TIME, t (5ms/div) Figure 15. Transient Response to Dynamic Load Change Figure 18. Typical Start-up Using Input Voltage (VIN = VIN,NOM, from 0% to 50% to 0% of full load. Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 8 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE EFFICIENCY, η (%) IO (A) (5A/div) VO (V) (200mV/div) V (V) (20mV/div) O INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) V (V) (1V/div) V (V) (1V/div) IN O Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATM030A0X3-SR and -SRH (2.0V, 30A) at 25 C. 100 35 2.5m/s Vin = 3.0V 500 LFM 30 95 25 0.5m/s 1m/s NC 90 Vin = 3.3V 100 LFM 200 LFM 20 Vin = 3.9V 1.5m/s 85 300 LFM 15 2.0m/s 400 LFM 80 10 5 75 0 70 30 40 50 60 70 80 0 5 10 15 20 25 30 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 22. Output Current Derating versus Ambient Figure 19. Converter Efficiency versus Output Current. Temperature and Airflow (ATM030A0X3-SR). 35 2.5m/s (500LFM) 30 NC 25 0.5m/s (100LFM) 1m/s (200LFM) 1.5m/s (300LFM) 20 2m/s (400LFM) 15 30 40 50 60 70 80 O AMBIENT TEMPERATURE, T C TIME, t (1µs/div) A Figure 20. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 23. Output Current Derating versus Ambient o,max). Temperature and Airflow (ATM030A0X3-SRH). I TIME, t (50µs /div) TIME, t (5ms/div) Figure 21. Transient Response to Dynamic Load Change Figure 24. Typical Start-up Using Input Voltage (VIN = from 0% to 50% to 0% of full load. VIN,NOM, Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 9 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE I (A) (5A/div) V (V) (200mV/div) EFFICIENCY, η (%) O O VO (V) (20mV/div) INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) V (V) (1V/div) V (V) (1V/div) IN O Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current To minimize input voltage ripple, low-ESR ceramic Test Configurations capacitors are recommended at the input of the module. Figure 28 shows the input ripple voltage for various output CURRENT PROBE voltages at 30A of load current with 1x47 µF or 2x47 µF TO OSCILLOSCOPE ceramic capacitors and an input of 3.3V. L TEST V (+) IN 1μH 100 C IN C 220μF S 90 Min E.S.R.<0.1Ω 150μF @ 20°C 100kHz 80 COM 70 NOTE: Measure input reflected ripple current with a simulated 60 source inductance (L ) of 1μH. Capacitor C offsets TEST S 1 x 47uF possible battery impedance. Measure current as shown above. 50 2 x 47uF 40 Figure 25. Input Reflected Ripple Current Test Setup. 0.5 1 1.5 2 COPPER STRIP Output Voltage (Vdc) Figure 28. Input ripple voltage for various output V O (+) RESISTIVE LOAD voltages with 1x47 µF or 2x47 µF ceramic capacitors at the input (30A load). Input voltage is 3.3V. 1uF . 10uF SCOPE COM Safety Considerations GROUND PLANE NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then For safety agency approval the power module must be Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact installed in compliance with the spacing and separation resistance. requirements of the end-use safety agency standards, i.e., Figure 26. Output Ripple and Noise Test Setup. UL 60950, CSA C22.2 No. 60950-00, EN60950 (VDE 0850) rd (IEC60950, 3 edition) Licensed. For the converter output to be considered meeting the Rdistribution Rcontact Rcontact Rdistribution V (+) V IN O requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. R LOAD V V IN O An input fuse for the module is recommended. As an option to using a fuse, no fuse is required, if the module is powered R R R R distribution contact contact distribution by a power source with current limit protection and the COM COM module is evaluated in the end-use equipment. Feature Descriptions NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals Remote On/Off to avoid measurement errors due to socket contact resistance. The ATM030 SMT power modules feature a On/Off pin for remote On/Off operation. If not using the On/Off pin, Figure 27. Output Voltage and Efficiency Test Setup. connect the pin to ground (the module will be ON). The On/Off signal (Von/off) is referenced to ground. Circuit V . I O O configuration for remote On/Off operation of the module Efficiency = x 100 % η using the On/Off pin is shown in Figure 29. V . I IN IN Design Considerations During a Logic High on the On/Off pin (transistor Q1 is OFF), The ATM030 module should be connected to a low- the module remains OFF. The external resistor R should be X impedance source. A highly inductive source can affect the chosen to maintain 2.5V minimum on the On/Off pin to stability of the module. An input capacitor must be placed ensure that the module is OFF when transistor Qx is in the directly adjacent to the input pin of the module, to minimize OFF state. A suitable values for RX is 3K for 5Vin. During input ripple voltage and ensure module stability. Logic-Low when Q is turned ON, the module is turned ON. X January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 10 BATTERY Input Ripple Voltage (mVp-p) Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Over Current Protection VIN+ MODULE To provide protection in a fault (output overload) condition, R1 Thermal SD the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit I ON/OFF operates normally once the output current is brought back 1K PWM Enable ON/OFF into its specified range. The average output current during + hiccup is 10% I . O, max V ON/OFF 100K Q1 Over Temperature Protection 10K To provide protection in a fault condition, the unit is GND _ equipped with a thermal shutdown circuit. The unit will o shutdown if the overtemperature threshold of 125 C is Figure 29. Remote On/Off Implementation using exceeded at the thermal reference point Tref. The thermal ON/OFF . shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. Once the unit goes The On/Off pin can also be used to synchronize the output into thermal shutdown it will then wait to cool before voltage start-up and shutdown of multiple modules in attempting to restart. parallel. By connecting On/Off pins of multiple modules, the Input Under Voltage Lockout output start-up can be synchronized (please refer to characterization curves). When On/Off pins are connected At input voltages below the input undervoltage lockout limit, together, all modules will shutdown if any one of the the module operation is disabled. The module will begin to modules gets disabled due to undervoltage lockout or over operate at an input voltage above the undervoltage lockout temperature protection. turn-on threshold. Output Voltage Programming Remote Sense The output voltage of the ATM030 module can be The ATM030 power modules have a Remote Sense feature programmed to any voltage from 0.8dc to 2.0Vdc by to minimize the effects of distribution losses by regulating connecting a resistor (shown as Rtrim in Figure 31) between the voltage at the Remote Sense pin (See Figure 30). The Trim and GND pins of the module. Without an external voltage between the Sense pin and Vo pin must not exceed resistor between Trim and GND pins, the output of the 0.5V. module will be 0.8Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, use the following The amount of power delivered by the module is defined as equation: the output voltage multiplied by the output current (Vo x Io). When using Remote Sense, the output voltage of the 1200   R = −100Ω trim module can increase, which if the same output is   Vo− 0.80   maintained, increases the power output by the module. Make sure that the maximum output power of the module R is the external resistor in Ω trim remains at or below the maximum rated power. When the Vo is the desired output voltage Remote Sense feature is not being used, connect the Remote Sense pin to output of the module. By using a ±0.5% tolerance trim resistor with a TC of ±100ppm, a set point tolerance of ±1.5% can be achieved as specified in the electrical specification. The POL Programming Tool, available at www.gecriticalpower.com Rdistribution Rcontact Rcontact Rdistribution under the Design Tools section, helps determine the V (+) V IN O required external trim resistor needed for a specific output Sense voltage. RLOAD R R R R distribution contact contact distribution COM COM Figure 30. Effective Circuit Configuration for Remote Sense operation. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 11 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current For proper voltage sequencing, first, input voltage is applied to the module. The On/Off pin of the module is or tied to V (+) V (+) IN O GND so that the module is ON by default. After applying input voltage to the module, a minimum of 10msec delay is required before applying voltage on the SEQ pin. After 10msec delay, an analog voltage is applied to the SEQ pin LOAD ON/OFF TRIM and the output voltage of the module will track this voltage on a one-to-one volt bases until output reaches the set- point voltage. To initiate simultaneous shutdown of the Rtrim modules, the SEQ pin voltage is lowered in a controlled GND manner. Output voltage of the modules tracks the voltages below their set-point voltages on a one-to-one basis. A valid input voltage must be maintained until the tracking and Figure 31. Circuit configuration to program output output voltages reach ground potential. voltage using an external resistor. Voltage Margining TM When using the EZ-SEQUENCE feature to control start-up of the module, pre-bias immunity feature during start-up is Output voltage margining can be implemented in the Austin TM disabled. The pre-bias immunity feature of the module MegaLynx modules by connecting a resistor, R , margin-up relies on the module being in the diode-mode during start- from the Trim pin to the ground pin for margining-up the TM up. When using the EZ-SEQUENCE feature, modules goes output voltage and by connecting a resistor, R , margin-down through an internal set-up time of 10msec, and will be in from the Trim pin to output pin for margining-down. Figure synchronous rectification mode when voltage at the SEQ pin 32 shows the circuit configuration for output voltage is applied. This will result in sinking current in the module if margining. The POL Programming Tool, available at pre-bias voltage is present at the output of the module. www.gecriticalpower.com under the Design Tools section, When pre-bias immunity during start-up is required, the EZ- also calculates the values of Rmargin-up and Rmargin-down for a TM SEQUENCE feature must be disabled. For additional specific output voltage and % margin. Please consult your TM guidelines on using EZ-SEQUENCE feature of Austin local GE technical representative for additional details. MegaLynx modules, contact the Tyco Power Systems Technical representative for the application note on output Voltage Sequencing voltage sequencing. TM The Austin MegaLynx series of modules include a Active Load Sharing (-P Option) sequencing feature that enables users to implement various For additional power requirements, the ATM030 series types of output voltage sequencing in their applications. This power module is also available with a parallel option. Up to is accomplished via an additional sequencing pin. When not five modules can be configured, in parallel, with active load using the sequencing feature, either leave the SEQ pin sharing. Good layout techniques should be observed when unconnected or tied to VIN. using multiple units in parallel. To implement forced load sharing, the following connections should be made: Vo • The share pins of all units in parallel must be connected together. The path of these connections should be as Rmargin-down direct as possible. Austin Lynx or • All remote-sense pins should be connected to the Lynx II Series power bus at the same point, i.e., connect all the Q2 SENSE(+) pins to the (+) side of the bus. Close proximity and directness are necessary for good noise immunity Trim Some special considerations apply for design of converters Rmargin-up in parallel operation: Rtrim When sizing the number of modules required for parallel operation, take note of the fact that current sharing has some tolerance. In addition, under transient condtions such Q1 as a dynamic load change and during startup, all converter output currents will not be equal. To allow for such variation GND and avoid the likelihood of a converter shutting off due to a current overload, the total capacity of the paralleled system should be no more than 75% of the sum of the individual Figure 32. Circuit Configuration for margining Output converters. As an example, for a system of four voltage. ATM030A0X3-SR converters the parallel, the total current drawn should be less that 75% of 4 x 30A or 90A. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 12 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current • When sizing the number of modules required for parallel operation, take note of the fact that current sharing has some tolerance. In addition, under transient condtions such as a dynamic load change and during startup, all converter output currents will not be equal. To allow for such variation and avoid the likelihood of a converter shutting off due to a current overload, the total capacity of the paralleled system should be no more than 75% of the sum of the individual converters. As an example, for a system of four ATM030A0X3-SR converters the parallel, the total current drawn should be less that 75% of (4 x 30A) , i.e. less than 90A. • All modules should be turned on and off together. This is so that all modules come up at the same time avoiding the problem of one converter sourcing current into the other leading to an overcurrent trip condition. To ensure that all modules come up simultaneously, the on/off pins of all paralleled converters should be tied together and the converters enabled and disabled using the on/off pin. • The share bus is not designed for redundant operation and the system will be non-functional upon failure of one of the unit when multiple units are in parallel. In particular, if one of the converters shuts down during operation, the other converters may also shut down due to their outputs hitting current limit. In such a situation, unless a coordinated restart is ensured, the system may never properly restart since different converters will try to restart at different times causing an overload condition and subsequent shutdown. This situation can be avoided by having an external output voltage monitor circuit that detects a shutdown condition and forces all converters to shut down and restart together. When not using the parallel feature, leave the share pin open. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 13 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Thermal Considerations Power modules operate in a variety of thermal environments; however, sufficient cooling should always be provided to help ensure reliable operation. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. The test set-up is shown in Figure 33. Note that the airflow is parallel to the long axis of the module as shown in Figure 34. The derating data applies to airflow in either direction of the module’s long axis. 25.4_ Wind Tunnel (1.0) PWBs Power Module Figure 34. Airflow direction for thermal testing. 76.2_ (3.0) x Probe Location for measuring 12.7_ airflow and Figure 35. T Temperature measurement location. ref (0.50) ambient temperature Air The thermal reference points, Tref used in the specifications flow are shown in Figure 35. For reliable operation the o temperatures at these points should not exceed 125 C. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). Figure 33. Thermal Test Up Please refer to the Application Note “Thermal Characterization Process For Open-Frame Board-Mounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 14 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Mechanical Outline of Module (ATM030A0X3-SRPH) 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.) Note: For the ATM030A0X3-SRH module, the SHARE pin is omitted since these modules are not capable of being paralleled. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 15 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Recommended Pad Layout (ATM030A0X3-SRPH) 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.) Pin 8 Pin 10 PIN FUNCTION PIN FUNCTION 1 On/Off 6 Trim 2 VIN 7 Sense 3 SEQ 8 GND 4 GND 9 SHARE 5 VOUT 10 GND Note: For the ATM030A0X3-SRH module, the SHARE pin is not present since these modules are not capable of being paralleled. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 16 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Mechanical Outline of Module (ATM030A0X3-SRP) 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.) Note: For the ATM030A0X3-SR module, the SHARE pin is omitted since these modules are not capable of being paralleled. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 17 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Recommended Pad Layout (ATM030A0X3-SRP) 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.) PIN FUNCTION PIN FUNCTION 1 On/Off 6 Trim 2 VIN 7 Sense 3 SEQ 8 No Pin 4 GND 9 Share 5 VOUT 10 No Pin Note: For the ATM030A0X3-SR module, the SHARE pin is not used since these modules are not capable of being paralleled. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 18 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Packaging Details The ATM030 SMT module is supplied in tape & reel as standard. Modules are shipped in quantities of 200 modules per reel. All Dimensions are in millimeters and (in inches). Reel Dimensions Outside diameter: 330.2 (13.0) Inside diameter: 177.8 (7.0) Tape Width: 44.0 (1.73) January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 19 Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current In a conventional Tin/Lead (Sn/Pb) solder process peak Surface Mount Information o reflow temperatures are limited to less than 235 C. o Typically, the eutectic solder melts at 183 C, wets the land, Pick and Place and subsequently wicks the device connection. Sufficient TM The Austin MegaLynx SMT modules use an open frame time must be allowed to fuse the plating on the connection construction and are designed for a fully automated to ensure a reliable solder joint. There are several types of assembly process. The modules are fitted with a label SMT reflow technologies currently used in the industry. designed to provide a large surface area for pick and place These surface mount power modules can be reliably operations. The label meets all the requirements for surface soldered using natural forced convection, IR (radiant mount processing, as well as safety standards, and is able infrared), or a combination of convection/IR. For reliable o to withstand reflow temperatures of up to 300 C. The label soldering the solder reflow profile should be established by also carries product information such as product code, accurately measuring the modules CP connector serial number and location of manufacture. temperatures. Figure 36. Pick and Place Location. Nozzle Recommendations REFLOW TIME (S) The module weight has been kept to a minimum by using Figure 37. Reflow Profile for Tin/Lead (Sn/Pb) process. open frame construction. Even so, these modules have a relatively large mass when compared to conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and pick & placement speed should be considered to optimize this process. The minimum recommended inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 5 mm max. Tin Lead Soldering The ATM030 modules are lead free modules and can be soldered either in a lead-free solder process or in a o conventional Tin/Lead (Sn/Pb) process. It is recommended Figure 38. Time Limit Curve Above 205 C Reflow for Tin that the customer review data sheets in order to customize Lead (Sn/Pb) process. the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 20 MAX TEMP SOLDER (°C) REFLOW TEMP (°C) Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current 300 Surface Mount Information (continued) Per J-STD-020 Rev. C Peak Temp 260°C 250 Lead Free Soldering Cooling The –Z version MegaLynx ATM SMT modules are lead-free 200 Zone * Min. Time Above 235°C (Pb-free) and RoHS compliant and are both forward and 15 Seconds 150 backward compatible in a Pb-free and a SnPb soldering Heating Zone *Time Above 217°C process. Failure to observe the instructions below may 1°C/Second 60 Seconds 100 result in the failure of or cause damage to the modules and can adversely affect long-term reliability. 50 0 Pb-free Reflow Profile Reflow Time (Seconds) Power Systems will comply with J-STD-020 Rev. C Figure 39. Recommended linear reflow profile using (Moisture/Reflow Sensitivity Classification for Nonhermetic Sn/Ag/Cu solder. Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air-convection reflow profile based on the volume and thickness of the package (table 4-2). 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 39. MSL Rating TM The Austin MegaLynx ATM SMT modules have a MSL rating of 2a. Storage and Handling The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of ≤ 30°C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40° C, < 90% relative humidity. Post Solder Cleaning and Drying Considerations Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Board Mounted Power Modules: Soldering and Cleaning Application Note (AN04-001). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 21 Reflow Temp (°C) Data Sheet GE TM 30A Austin MegaLynx : Non-Isolated DC-DC Power Modules 2.7Vdc – 4.0Vdc input; 0.8Vdc to 2.0Vdc output; 30A Output Current Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 1: Device Codes Input Output Output On/Off Connector Product codes Comcodes Voltage Voltage Current Logic Type ATM030A0X3-SR 2.7 – 4.0Vdc 0.8 – 2.0Vdc 30A Negative SMT CC109112315 ATM030A0X3-SRZ 2.7 – 4.0Vdc 0.8 – 2.0Vdc 30A Negative SMT CC109112397 ATM030A0X3-SRH 2.7 – 4.0Vdc 0.8 – 2.0Vdc 30A Negative SMT CC109112323 ATM030A0X3-SRHZ 2.7 – 4.0Vdc 0.8 – 2.0Vdc 30A Negative SMT CC109112406 ATM030A0X3-SRPH 2.7 – 4.0Vdc 0.8 – 2.0Vdc 30A Negative SMT CC109112331 ATM030A0X3-SRPHZ 2.7 – 4.0Vdc 0.8 – 2.0Vdc 30A Negative SMT CC109112414 Table 2. Device Options Option Device Code Suffix Current Share -P 2 Extra ground pins -H RoHS Compliant -Z Contact Us For more information, call us at USA/Canada: +1 877 546 3243, or +1 972 244 9288 Asia-Pacific: +86.021.54279977*808 Europe, Middle-East and Africa: +49.89.878067-280 www.gecriticalpower.com GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and no liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. January 20, 2016 ©2016 General Electric Company. All International rights reserved. Version 1.11