GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Features RoHS Compliant Applications Distributed power architectures Intermediate bus voltage applications Industrial applications Telecommunications equipment Vin+ VIN PGOOD CI2 Compliant to RoHS EU Directive 2002/95/EC with lead solder exemption (non-Z versions) Input voltage from 4.5Vdc to 14Vdc Output voltage programmable from 0.7 Vdc to 2.0Vdc via external resistor Output current up to 50A Tunable control loop for fast transient response True differential remote sense Negative remote On/Off logic Output voltage sequencing (EZ-SEQUENCE TM) Output over current protection (non-latching) Over temperature protection Monotonic startup under pre-bias conditions Parallel operation with active current sharing Small size and low profile: 33 mm x 22.9 mm x 10 mm (max.) (1.3 in x 0.9 in x 0.393 in (max.)) RTUNE + CO1 Wide operating temperature range [-40C to 85C(Regular)] CO2 CTUNE ON/OFF Vout+ MODULE CI1 Compliant to RoHS EU Directive 2002/95/EC (-Z versions) VOUT SENSE+ SEQ + TRIM+ UL* 60950-1, 2nd Ed. Recognized, CSA C22.2 No. 60950-1-07 Certified, and VDE (EN60950-1, 2nd Ed.) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities RTrim SHARE TRIMGND SENSESENSE- Description The GigaTLynxTM series of power modules are non-isolated dc-dc converters that can deliver up to 50A of output current. These modules operate over a wide range of input voltage (VIN = 4.5Vdc-14Vdc) and provide a precisely regulated output voltage from 0.7Vdc to 2.0Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and over temperature protection, output voltage sequencing and paralleling. The Tunable LoopTM feature, allows the user to optimize the dynamic response of the converter to match the load with reduced amount of output capacitance leading to savings on cost and PWB area. * 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 December 6, 2019 (c)2012 General Electric Company. All rights reserved. GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A 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 All VIN -0.3 14 Vdc Sequencing pin voltage All VsEQ -0.3 4 Vdc Operating Ambient Temperature All TA -40 85 C All Tstg -55 125 C Input Voltage Continuous (see Thermal Considerations section) Storage Temperature Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max 4.5 14 Unit Operating Input Voltage Vo,set 2.0 VIN Maximum Input Current All IIN,max Vdc All I2 t Input No Load Current VO,set = 0.7Vdc IIN,No load 73.4 mA (VIN = VIN, nom, Io = 0, module enabled) VO,set = 1.8Vdc IIN,No load 136 mA All IIN,stand-by 1.3 mA Adc (VIN= VIN, min to VIN, max, IO=IO, max ) 26 Inrush Transient Input Stand-by Current A2 s 1 (VIN = VIN, nom, module disabled) Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1H source impedance; VIN, min to VIN, max, IO= IOmax ; See Test configuration section) All Input Ripple Rejection (120Hz) All 73 50 mAp-p 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 surface mount, fast acting fuse (ie. Littelfuse 456030 series) 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. December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 2 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Electrical Specifications (continued) Parameter Output Voltage Set-point (VIN=VIN,nom, IO=IO, nom, Tref=25C) Device Symbol Min Typ Max Unit All VO, set -1.0 +1.0 % VO, set Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) All VO, set -2.0 +2.0 % VO, set Adjustment Range Selected by an external resistor All VO 0.7 2.0 Vdc Output Regulation Line (VIN=VIN, min to VIN, max) All 5 mV Load (IO=IO, min to IO, max) All 8 mV Temperature (Tref=TA, min to TA, max) All 8 mV 0.5 Vdc 50 mVpk-pk Remote Sense Range All Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout = 1F ceramic//2x10F ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) All External Capacitance 1 Without the Tunable LoopTM ESR 1 m All CO, max 1200 F ESR 10 m All CO, max 10000 F ESR 1 m All CO, max 20000 F 20000 F 50A Adc With the Tunable Loop ESR 10 m All CO, max Output Current All Io 0 Output Current Limit Inception (Hiccup Mode ) All IO, lim 140 180 210 % Io Output Short-Circuit Current All IO, s/c 3.0 5.5 8.5 Adc (VO250mV) ( Hiccup Mode ) Efficiency VO, set = 0.7Vdc 80 81.1 % VIN= 12V, TA=25C VO,set = 1.2Vdc 84.3 87.0 % IO=IO, max , VO= VO,set VO,set = 1.8Vdc 87.3 90.1 Switching Frequency All fsw 247 260 % 273 kHz General Specifications Parameter Min Telcordia Issue 2, Method I, Case 3, Calculated MTBF (IO=IO, max, TA=40C) Weight Typ Max 4,755,661 12.80 (0.45) 14.22 (0.5) Unit Hours 15.64 (0.55) g (oz.) External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best transient response. See the Tunable LoopTM section for details. 1 December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 3 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A 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 Input High Current All IIH 0.5 3.3 mA Input High Voltage All VIH 3.0 VIN_ max V Input Low Current All IIL 200 A Input Low Voltage All VIL -0.3 0.6 V All Tdelay 3.0 4.8 7.0 msec All Tdelay 3.0 4.8 7.0 msec All Trise 2.0 3.6 4.2 msec 3 % of Vset 125 C -- 2 V/msec On/Off Signal Interface (VIN=VIN, min to VIN, max ; Signal referenced to GND Negative Logic: Logic High (Module OFF) Logic Low (Module ON) Turn-On Delay and Rise Times (IO=IO, max , VIN = VIN, nom, TA = 25 oC, ) Case 1: On/Off input is set Logic Low (for Negative Logic module) or On/Off input is set Logic High (for Positive Logic module) The delay from the time input power is applied ( delay from instant at which VIN = VIN_min until Vo = 10% of Vo,set) Case 2: Input Power is applied for at least one second and then On/Off input is set to Logic Low ( for Negative Logic Module) or Logic High ( for Positive Logic Module) The delay from the instant at which Von/off = 0.3V until Vo = 10% of Vo,set Output Voltage Rise Time ( time for Vo to rise from 10% of Vo,set to 90% of Vo,set Output voltage overshoot - Startup Over Temperature Protection All Tref All dVSEQ/dt (See Thermal Consideration section) Sequencing Slew rate capability (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) Sequencing Delay time (Delay from VIN, min to application of voltage on SEQ pin) All TsEQ-delay Tracking Accuracy All VSEQ -Vo 200 400 mV VSEQ -Vo 100 200 mV Power-up (2V/ms) Power-down (1V/ms) 10 msec (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 4 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Feature Specifications (Continued) Parameter Device Symbol Min Typ Max Unit All All All 4.01 3.9 0.1 4.26 4.04 0.22 4.6 4.4 0.65 V V Vdc Forced Load Share Accuracy All 10 Number of units in Parallel All Input Undervoltage Lockout Turn-on Threshold Turn-off Threshold Hysteresis % Io 5 PGOOD (Power Good) Internal pull-up, VPGOOD All 5 V Overvoltage threshold for PGOOD All 112.5 %VO, set Undervoltage threshold for PGOOD All 87.5 %VO, set December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 5 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current The following figures provide typical characteristics for the 12V Giga TLynxTM 50A at 0.7Vo and at 25oC Characteristic Curves 95 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 90 85 Vin=12V 80 Vin=4.5V Vin=14V 75 70 0 10 20 30 40 50 OUTPUT CURRENT, IO (A) OUTPUT VOLTAGE VO (V) (10mV/div) OUTPUT CURRENT IO (A) (20Adiv) VO (V) (10mV/div) OUTPUT VOLTAGE Figure 1. Converter Efficiency versus Output Current. AMBIENT TEMPERATURE, TA OC Figure 2. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (0.2ms /div) TIME, t (1s/div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (200mV/div) VON/OFF (V) (5V/div) Figure 4. Transient Response to Dynamic Load Change from 50% to 100% at 12Vin, Cext =5x47uF+ +22x330uFpolymer,CTune=330nF,RTune=100ohms OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE VO (V) (200mV/div) Figure 3. Typical output ripple and noise (VIN = 12V, Io = Io,max). TIME, t (2ms/div) Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max). December 6, 2019 TIME, t (2ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). (c)2012 General Electric Company. All rights reserved. Page 6 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current The following figures provide typical characteristics for the 12V Giga TLynxTM 50A at 1.2 Vo and at 25o Characteristic Curves 95 85 Vin=12V 80 Vin=4.5V OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 90 Vin=14V 75 70 0 10 20 30 40 50 OUTPUT CURRENT, IO (A) OUTPUT VOLTAGE VO (V) (10mV/div) (20Adiv) OUTPUT CURRENT, VO (V) (10mV/div) OUTPUT VOLTAGE Figure 7. Converter Efficiency versus Output Current. AMBIENT TEMPERATURE, TA OC Figure 8. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (0.1ms /div) TIME, t (1s/div) INPUT VOLTAGE VIN (V) (5V/div) OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (500mV/div) 50% to 100% at 12Vin, Cext =5x47uF+ +13x330uFpolymer,CTune=120nF,RTune=180ohms VO (V) (500mV/div) ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 9. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 10. Transient Response to Dynamic Load Change from TIME, t (2 ms/div) TIME, t (2 ms/div) Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max). December 6, 2019 Figure 12. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). (c)2012 General Electric Company. All rights reserved. Page 7 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current The following figures provide typical characteristics for the 12V Giga TLynxTM 50A at 1.8 Vo and at 25oC. Characteristic Curves 100 Vin=12V OUTPUT CURRENT, Io (A) 95 EFFICIENCY, (%) 90 85 Vin=14V Vin=4.5V 80 75 70 0 10 20 30 40 50 OUTPUT CURRENT, IO (A) OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT CURRENT, IO (A) (20Adiv) VO (V) (10mV/div) OUTPUT VOLTAGE Figure 13. Converter Efficiency versus Output Current. AMBIENT TEMPERATURE, TA OC Figure 14. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (0.1ms /div) TIME, t (1s/div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (500mV/div) VON/OFF (V) (5V/div) VO(V) (500mV/div) 50% to 100% at 12Vin, Cext =5x47uF+ +8x330uFpolymer,CTune=47nF,RTune=220ohms OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 15. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 16. Transient Response to Dynamic Load Change from TIME, t (2 ms/div) Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max). December 6, 2019 TIME, t (2 ms/div) Figure 18. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). (c)2012 General Electric Company. All rights reserved. Page 8 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Test Configurations Design Considerations CURRENT PROBE The Giga TLynxTM module should be connected to a low acimpedance source. A highly inductive source can affect the stability of the module. An input capacitance must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. LTEST VIN(+) BATTERY 1H CIN CS 1000F Electrolytic To minimize input voltage ripple, ceramic capacitors are recommended at the input of the module. Figure 22 shows the input ripple voltage for various output voltages at maximum load current with 2x22 F or 4x22 F or 4x47 F ceramic capacitors and an input of 12V. 2x100F Tantalum E.S.R.<0.1 @ 20C 100kHz COM NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1H. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 19. Input Reflected Ripple Current Test Setup. COPPER STRIP RESISTIVE LOAD Vo+ 10uF 0.1uF Input Filtering COM SCOPE USING BNC SOCKET 250 Input Ripple Voltage (mVp-p) TO OSCILLOSCOPE 2x22uF 225 4x22uF 200 4x47uF 175 150 125 100 75 50 1 Figure 20. Output Ripple and Noise Test Setup. Rcontact Rcontact VIN(+) Rdistribution Rcontact COM Rdistribution RLOAD VO Rcontact Rdistribution COM 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 to avoid measurement errors due to socket contact resistance. Figure 21. Output Voltage and Efficiency Test Setup. V O. I O Efficiency December 6, 2019 = VIN. IIN x 1.75 2 100 % Figure 22. Input ripple voltage for various output voltages with 2x22 F, 4x22 F or 4x47 F ceramic capacitors at the input (maximum load). Input voltage is 12V Output Filtering VO VIN 1.5 Output Voltage (Vdc) GROUND PLANE 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 to avoid measurement errors due to socket contact resistance. Rdistribution 1.25 The Giga TLynxTM modules are designed for low output ripple voltage and will meet the maximum output ripple specification with 0.1 F ceramic and 10 F ceramic capacitors at the output of the module. However, additional output filtering may be required by the system designer for a number of reasons. First, there may be a need to further reduce the output ripple and noise of the module. Second, the dynamic response characteristics may need to be customized to a particular load step change. To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at the output can be used. Low ESR polymer and ceramic capacitors are recommended to improve the dynamic response of the module. Figure 23 provides output ripple information for different external capacitance values at various Vo and for full load currents. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. Optimal performance of the module can be achieved by using the Tunable Loop feature described later in this data sheet. (c)2012 General Electric Company. All rights reserved. Page 9 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Feature Descriptions 80 70 Ripple (mVp-p) On/Off circuit configuration is shown in Fig. 24. The On/Off pin should be pulled high with an external pull-up resistor (suggested value for the 4.5V to 14V input range is 20Kohms). When transistor Q2 is in the OFF state, the On/Off pin is pulled high, transistor Q1 is turned ON and the module is OFF. To turn the module ON, Q2 is turned ON pulling the On/Off pin low, turning transistor Q1 OFF resulting in the internal UVLO pin going high and turning on the module. 2x10uF Ext Cap 2x47uF Ext Cap 4x47uF Ext Cap 60 8x47uF Ext Cap 50 40 30 20 10 VIN+ 0 MODULE 0.6 0.8 1 1.2 1.4 1.6 1.8 2 UVLO Output Voltage(Volts) R3 Figure 23. Output ripple voltage for various output voltages with external 2x10 F, 2x47 F, 4x47 F or 8x47 F ceramic capacitors at the output (50A load). Input voltage is 12V. ON/OFF Q2 Safety Considerations For safety agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards, i.e., UL 60950-1 2nd, CSA C22.2 No. 60950-1-07, DIN EN 60950-1:2006 + A11 (VDE0805 Teil 1 + A11):2009-11; EN 60950-1:2006 + A11:2009-03. For the converter output to be considered meeting the 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. The input to these units is to be provided with a surface mount, fast acting fuse (ie. Littelfuse 456030 series) with a maximum rating of 30A in the positive input lead. Remote On/Off GigaTLynxTM The SMT power modules feature a On/Off pin for remote On/Off operation. With the available Negative Logic On/Off feature, (no device code suffix, see Ordering Information), the module turns OFF during logic High and ON during logic Low. The On/Off signal is always referenced to ground. If not using the On/Off pin, connect the pin to ground (the module will be ON). The On/Off signal (Von/off) is referenced to ground. Q1 5.11K 5.11K GND Figure 24. Circuit configuration for using negative On/Off logic. During a Logic High on the On/Off pin (transistor Q2 is OFF), the module remains OFF. The external resistor R3 should be chosen to maintain 1.0V minimum on the On/Off pin to ensure that the module is OFF when transistor Q2 is in the OFF state. Suitable value for R3 is 12.1K. During Logic-Low when Q2 is turned ON, the module is turned ON. The On/Off pin can also be used to synchronize the output voltage start-up and shutdown of multiple modules in parallel. By connecting On/Off pins of multiple modules, the output start-up can be synchronized (please refer to characterization curves). Overcurrent Protection To provide protection in a fault (output overload) condition, 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 should operate normally once the output current is brought back into its specified range. Overtemperature Protection To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the overtemperature threshold of 125oC is exceeded at the thermal reference point Tref . The thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. Once the unit goes into thermal shutdown it will then wait to cool before attempting to restart. December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 10 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Input Undervoltage Lockout Voltage Margining At input voltages below the input undervoltage lockout limit, module operation will be disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold. Output voltage margining can be implemented in the Giga TLynxTM modules by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 26 shows the circuit configuration for output voltage margining. The POL Programming Tool, available at www.lineagepower.com under the Design Tools section, also calculates the values of Rmargin-up and Rmargin-down for a specific output voltage and % margin. Please consult your local Lineage Power technical representative for additional details. Output Voltage Programming The output voltage of the GigaTLynxTM can be programmable to any voltage from 0.7 Vdc to 2.0Vdc by connecting a single resistor (shown as Rtrim in Figure 25) between the TRIM+ and TRIM pins of the module. The following equation will be used to set the output voltage of the module: Monotonic Start-up and Shutdown 14000 Rtrim Vo 0.7 The Giga TLynxTM modules have monotonic start-up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. 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. Table 1 provides Rtrim values required for some common output voltages. The POL Programming Tool, available at www.lineagepower.com under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage. Table 1 VO, set (V) 0.7 1.0 1.2 1.5 1.8 V IN(+) V O(+) ON/OFF TRIM+ Rtrim (K) Open 46.6 28 17.5 12.7 Vout LOAD R trim TRIM GND Figure 25. Circuit configuration to program output voltage using an external resistor. Remote Sense The GigaTLynxTM SMT power modules have differential Remote Sense to minimize the effects of distribution losses by regulating the voltage at the Remote Sense pin. The voltage between the SENSE pin and VOUT pin must not exceed 0.5V. Note that the output voltage of the module cannot exceed the specified maximum value. This includes the voltage drop between the SENSE and Vout pins. When the Remote Sense feature is not being used, connect the SENSE pin to the VOUT pin. December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 11 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Startup into Pre-biased Output The Giga TLynxTM modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the set output voltage. Note that prebias operation is not supported when output voltage sequencing is used. Vo Rmargin-down MODULE Q2 TRIM+ Rmargin-up For proper voltage sequencing, first, input voltage is applied to the module. The On/Off pin of the module is left unconnected or tied to GND so that the module is ON by default. After applying input voltage to the module, a minimum 10msec delay is required before applying voltage on the SEQ pin. Alternatively, input voltage can be applied while the unit is OFF and then the unit can be enabled. In this case the SEQ signal must be applied 10ms after the unit is enabled. This delay gives the module enough time to complete its internal power-up soft-start cycle. During the delay time, the SEQ pin may be held to ground. During the delay time, the SEQ pin should be held close to ground (nominally 50mV 20 mV). This is required to keep the internal op-amp out of saturation thus preventing output overshoot during the start of the sequencing ramp. The resistor R1 (see fig. 27) has been designed into the module to achieve 50mV 20mV at the inverting input, and is calculated according to the following equation Rtrim R1 Q1 The voltage at the sequencing pin will be 50mV when the sequencing signal is at zero. The VREG is generated inside the module with a nominal value of 5.1V. TRIM- Figure 26. Circuit Configuration for margining Output voltage. Output Voltage Sequencing MODULE VREG 499K + OUT R1 SEQ 5.11K 10K 24950 ohms, VREG 0.05 _ GND Figure 27. Circuit showing connection of the sequencing signal to the SEQ pin. After the 10msec delay, an analog voltage is applied to the SEQ pin and the output voltage of the module will track this voltage on a one-to-one volt bases until the output reaches the setpoint voltage. To initiate simultaneous shutdown of the modules, the SEQ pin voltage is lowered in a controlled manner. The 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 output voltages reach ground potential. When using the EZ-SEQUENCETM feature to control start-up of the module, pre-bias immunity during start-up is disabled. The pre-bias immunity feature of the module relies on the module being in the diode-mode during start-up. When using the EZSEQUENCETM feature, modules goes through an internal set-up time of 10msec, and will be in synchronous rectification mode when the voltage at the SEQ pin is applied. This will result in the module sinking current if a pre-bias voltage is present at the output of the module. When pre-bias immunity during start-up is required, the EZ-SEQUENCETM feature must be disabled. For additional guidelines on using the EZSEQUENCETM feature please contact the Lineage Power technical representative for additional information. The Giga TLynxTM modules include a sequencing feature, EZSEQUENCETM that enables users to implement various types of output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When not using the sequencing feature, leave it unconnected. When an analog voltage is applied to the SEQ pin, the output voltage tracks this voltage until the output reaches the setpoint voltage. The final value of the SEQ voltage must be set higher than the set-point voltage of the module. The output voltage follows the voltage on the SEQ pin on a one-to-one basis. By connecting multiple modules together, multiple modules can track their output voltages to the voltage applied on the SEQ pin. December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 12 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Good layout techniques should be observed when using multiple units in parallel. To implement forced load sharing, the following connections should be made: overtemperature, overcurrent or loss of regulation occurs that would result in the output voltage going 12.5% outside the setpoint value. The PGOOD terminal is internally pulled-up and provides a voltage of ~5V, when asserted, thus eliminating the need for an external source and pull-up resistor. Additional external drive capability can be provided to the PGOOD terminal by using a source less than 5V and a suitable pull-up resistor to keep the overall external current below 4.5mA Tunable Loop Active Load Sharing (-P Option) For additional power requirements, the Giga TLynxTM power module is also available with a parallel option. Up to five modules can be configured, in parallel, with active load sharing. The share pins of all units in parallel must be connected together. The path of these connections should be as direct as possible. All remote-sense pins should be connected to the power bus at the same point, i.e., connect all the SENSE(+) pins to the (+) side of the bus. Close proximity and directness are necessary for good noise immunity Some special considerations apply for design of converters in parallel operation: 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 conditions 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 90% of the sum of the individual converters. As an example, for a system of four Giga TLynxTM converters in parallel, the total current drawn should be less that 90% of (4 x 50A) , i.e. less than 180A. 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 active load share feature, share pins should be left unconnected. Power Good The Giga TLynxTM modules provide a Power Good (PGOOD) signal to indicate that the output voltage is within the regulation limits of the power module. The PGOOD signal will be de-asserted to a low state if any condition such as December 6, 2019 The Giga TLynxTM modules have a new feature that optimizes transient response of the module called Tunable LoopTM. External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and noise (see Fig. 23) and to reduce output voltage deviations from the steady-state value in the presence of dynamic load current changes. Adding external capacitance however affects the voltage control loop of the module, typically causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause the module to become unstable. The Tunable LoopTM allows the user to externally adjust the voltage control loop to match the filter network connected to the output of the module. The Tunable LoopTM is implemented by connecting a series R-C between the SENSE and TRIM+ pins of the module, as shown in Fig. 28. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. VOUT SENSE+ RTUNE MODULE CTUNE CO1 TRIM+ RTrim TRIMGND SENSE- Figure. 28. Circuit diagram showing connection of RTUNE and CTUNE to tune the control loop of the module. Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2 and 3. Table 2 shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to 2000uF that might be needed for an application to meet output ripple and noise requirements. Selecting RTUNE and CTUNE according to Table 2 will ensure stable operation of the module. In applications with tight output voltage limits in the presence of dynamic current loading, additional output capacitance will be required. Table 3 lists recommended values of RTUNE and (c)2012 General Electric Company. All rights reserved. Page 13 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current CTUNE in order to meet 2% output voltage deviation limits for some common output voltages in the presence of a 25A to 50A step change (50% of full load), with an input voltage of 12V. Please contact your Lineage Power technical representative to obtain more details of this feature as well as for guidelines on how to select the right value of external R-C to tune the module for best transient performance and stable operation for other output capacitance values or input voltages other than 12V. Table 2. General recommended values of of RTUNE and CTUNE for Vin=12V and various external ceramic capacitor combinations. CO RTUNE CTUNE 1 x 47uF 2x47uF 330 330 330pF 560pF 4x47uF 6x47uF 330 330 1200pF 1800pF 10 x 47uF 20 x 47uF 270 270 2200pF 5600pF Table 3. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 25A step load with Vin=12V. VO CO 1.8V 5x47uF + 8x330uF polymer 1.2V 5x47uF + 13x330uF polymer 0.7V 5x47uF + 22x330uF polymer RTUNE 220 180 100 CTUNE V 47nF 35mV 120nF 23mV 330nF 14mV December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 14 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A 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 29. Note that the airflow is parallel to the short axis of the module as shown in Figure 30. The derating data applies to airflow in either direction of the module's short axis. The thermal reference points, Tref used in the specifications is shown in Figure 30. For reliable operation the temperatures at this point should not exceed 125oC. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). 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. 25.4_ (1.0) Wind Tunnel PWBs Power Module Figure 30. Preferred airflow direction and location of hotspot of the module (Tref). 76.2_ (3.0) x 12.7_ (0.50) Probe Location for measuring airflow and ambient temperature Air flow Figure 29. Thermal Test Setup. December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 15 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Example Application Circuit Requirements: Vin: 12V Vout: 1.8V Iout: 37.5A max., worst case load transient is from 25A to 37.5A Vout: Vin, ripple 1.5% of Vout (27mV) for worst case load transient 1.5% of Vin (180mV, p-p) Vout+ Vin+ VIN VOUT SENSE+ PGOOD RTUNE SEQ + CI2 CI1 MODULE + CTUNE ON/OFF CO1 CO2 TRIM+ SHARE RTrim TRIM- GND SENSE- SENSE- CI1 4x22F/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20) CI2 200F/16V bulk electrolytic CO1 5 x 47F/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19) CO2 8 x 330F/6.3V Polymer (e.g. Sanyo Poscap) CTune 47nF ceramic capacitor (can be 1206, 0805 or 0603 size) RTune 220 ohms SMT resistor (can be 1206, 0805 or 0603 size) RTrim 12.7k SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 16 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Mechanical Outline of 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.) PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 December 6, 2019 (c)2012 General Electric Company. All rights reserved. FUNCTION VIN GND VOUT VOUT GND VIN SEQ PGOOD ON/OFF VSVS+ +TRIM -TRIM SHARE Page 17 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Mechanical Outline Dimensions are in inches and (millimeters). Tolerances: x.xx in. 0.02 in. (x.x mm 0.5 mm) [unless otherwise indicated] x.xxx in 0.010 in. (x.xx mm 0.25 mm) PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 December 6, 2019 FUNCTION VIN GND VOUT VOUT GND VIN SEQ PGOOD ON/OFF VSVS+ +TRIM -TRIM SHARE (c)2012 General Electric Company. All rights reserved. Page 18 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Packaging Details The Giga TLynxTM SMT modules are supplied in tape & reel as standard. Modules are shipped in quantities of 140 modules per reel. All Dimensions are in millimeters and (in inches). Reel Dimensions Outside diameter: Inside diameter: Tape Width: LINEAGE POWER 330.2 (13.0) 177.8 (7.0) 56.0 (2.20) 19 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Surface Mount Information Lead-free (Pb-free) Soldering Pick and Place The Giga TLynxTM SMT modules use an open frame construction and are designed for a fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operations. The label meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow temperatures of up to 300oC. The label also carries product information such as product code, serial number and location of manufacture. The -Z version Giga TLynx modules are lead-free (Pb-free) and RoHS compliant and are both forward and backward compatible in a Pb-free and a SnPb soldering process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect long-term reliability. Pb-free Reflow Profile Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-airconvection reflow profile based on the volume and thickness of the package (table 5-2). The suggested Pbfree solder paste is Sn/Ag/Cu (SAC). Recommended linear reflow profile using Sn/Ag/Cu solder: Figure 31. Pick and Place Location. NOTE: Soldering outside of the recommended profile Nozzle Recommendations requires testing to verify results and performance. The module weight has been kept to a minimum by using 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. Bottom Side Assembly This module is not recommended for assembly on the bottom side of a customer board. If such an assembly is attempted, components may fall off the module during the second reflow process. If assembly on the bottom side is planned, please contact Lineage Power for special manufacturing process instructions. December 6, 2019 Tin Lead Soldering The Giga TLynxTM SMT power modules are lead free modules and can be soldered either in a lead-free solder process or in a conventional Tin/Lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize 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. In a conventional Tin/Lead (Sn/Pb) solder process peak reflow temperatures are limited to less than 235oC. Typically, the eutectic solder melts at 183oC, wets the land, and subsequently wicks the device connection. Sufficient time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. There are several types of SMT reflow technologies currently used in the industry. These surface mount power modules can be reliably soldered using natural forced convection, IR (radiant infrared), or a combination of convection/IR. For reliable soldering the solder reflow profile should be established by (c)2012 General Electric Company. All rights reserved. Page 20 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current accurately measuring the modules CP connector temperatures. MSL Rating The Giga TLynxTM SMT modules have a MSL rating of 2a. 300 Storage and Handling P eak Temp 235oC REFLOW TEMP (C) 250 Heat zo ne max 4oCs -1 200 The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. B (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 <= 30C 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. Co o ling zo ne 1-4oCs -1 150 So ak zo ne 30-240s 100 Tlim above 205oC P reheat zo ne max 4oCs -1 50 0 REFLOW TIME (S) Figure 32. Reflow Profile for Tin/Lead (Sn/Pb) process. 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). 240 235 230 225 MAX TEMP SOLDER (C) Post Solder Cleaning and Drying Considerations 220 215 210 205 200 0 10 20 30 40 50 60 Figure 33. Time Limit Curve Above 205oC Reflow for Tin Lead (Sn/Pb) process. December 6, 2019 (c)2012 General Electric Company. All rights reserved. Page 21 GE Data Sheet 50A GigaTLynxTM: Non-Isolated DC-DC Power Modules 4.5Vdc -14Vdc input; 0.7Vdc to 2.0Vdc output; 50A Output Current Ordering Information Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 6. Device Codes Device Code Input Voltage Range Output Voltage Output Current On/Off Logic Sequencing Comcodes APTS050A0X3-SRPHZ 4.5 - 14Vdc 0.7 - 2.0Vdc 50A Negative Yes CC109155314 Table 7. Coding Scheme TLynx family Sequencing feature. Input voltage range Output current Output voltage AP T S 050A0 X T = with Seq. S = 4.5 14V 50A On/Off logic X= No entry = programma negative ble output 4 = positive Remote Sense Options ROHS Compliance 3 -SRPH Z 3= Remote Sense S = Surface Mount R = Tape&Reel P = Paralleling Z = ROHS6 H=2 ground pins 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 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. December 6, 2019 (c)2018 General Electric Company. All International rights reserved. Version 1.4