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GS61004B-EVBCD

GaN E-HEMT Full Bridge Evaluation Board

User’s Guide

_____________________________________________________________________________________________________________________

GS61004B-EVBCD Rev 200106

© 2020 GaN Systems Inc.

www.gansystems.com 10

Please refer to the Evaluation Board/Kit Important Notice on page 27

Figure 6 •

Dead Time vs Dead Time Resistor

RDLH

RDHL

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Summary of Contents for GS61004B-EVBCD

Page 1: ..._____________________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 1 Please refer to the Evaluation Board Kit Important Notice on page 27 GS61004B...

Page 2: ...vere injury or death Follow all locally approved safety procedures when working around high voltage Never leave the board operating unattended After it is de energized always wait until all capacitors...

Page 3: ...capable of providing switching transition speeds in the sub nano second range for hard switching applications This user s guide includes the evaluation board schematic circuit description a quick star...

Page 4: ...Important Notice on page 27 Evaluation Board Assembly Overview The evaluation board EVB is assembled with two PE29102 GaN E HEMT drivers and four GS61004B E HEMT transistors Headers are included for...

Page 5: ..._________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 5 Please refer to the Evaluation Board Kit Important Notice on page 27 Block Diagram and Sch...

Page 6: ..._______________________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 6 Please refer to the Evaluation Board Kit Important Notice on page 27 Figure...

Page 7: ..._______________________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 7 Please refer to the Evaluation Board Kit Important Notice on page 27 Figure...

Page 8: ...testing to evaluate the relative merits of either approach in practice Test Points TP1 and TP2 allow for convenient oscilloscope monitoring of the jumper configured drive waveforms derived from the P...

Page 9: ...n for each of the high side device gate drives The capacitor C20 forms a low pass filter with L1 and L2 from each pair of E HEMTs rolling off the frequency response at 12 dB Octave above approximately...

Page 10: ...__________________________________________________________________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 10 Please refer to the Evaluation B...

Page 11: ...apply a calibration load to ground to set the threshold at which the limit occurs When current is drawn through R61 a voltage develops across it that is scaled by various fitted resistors R60 R69 and...

Page 12: ...gansystems com 12 Please refer to the Evaluation Board Kit Important Notice on page 27 This page intentionally left blank Figure 7 Overcurrent Protection VIN R70 DNI 0603 R60 2 7K 5 1 8W R71 22 5 1 8W...

Page 13: ...M input and Terminal Block audio output ports Test points header pins and jumpers for performance verification Output Filters included Note that blocking capacitors are required if converting to two h...

Page 14: ...gansystems com 14 Please refer to the Evaluation Board Kit Important Notice on page 27 Evaluation Test Setup Figure 8 through Figure 12 show the test setup for the PE29102 Full Bridge EVB setup Make s...

Page 15: ...__________________________________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 15 Please refer to the Evaluation Board Kit Important Notice on pag...

Page 16: ...______________________________________________________________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 16 Please refer to the Evaluation Board...

Page 17: ...load or HV supply yet connected the current consumption should be 20 mA 5 Connect the input PWM control signal to J100 In the absence of a periodic rectangular waveform which when present should be no...

Page 18: ...ency content switch node care must be taken to avoid long ground leads Measure the switch node by placing the oscilloscope probe tip at JP2 and JP3 designed for this purpose See Figure 13 for proper p...

Page 19: ...ing Ohms law calculate and choose a representative maximum chosen resistive or active load representing no more than 14 Amps This connection should be made between TP5 and ground using sufficiently th...

Page 20: ...________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 20 Please refer to the Evaluation Board Kit Important Notice on page 27 Evaluation Results Th...

Page 21: ...____________________________________________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 21 Please refer to the Evaluation Board Kit Important Notice on page 27 F...

Page 22: ..._____________________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 22 Please refer to the Evaluation Board Kit Important Notice on page 27 Figure 16 GS61004B EVBCD Efficie...

Page 23: ...eed the absolute maximum die temperature of 125 C The thermal performance of the GS61004B EVBCD evaluation board is shown in Figure 17 Figure 17 GS61004B EVBCD EVB Thermal Plot Showing Maximum of 57 C...

Page 24: ...irectly to TP1 and TP2 for example as a Stereo pair of Left and Right channels D1 and D2 still protect the PE29102 inputs that are connected Do not use the coax socket at J100 101 as U9 and U5 are now...

Page 25: ...dge Stereo Audio Operation Configuration Note Negative LS terminals connect to GND see Figure 19 Connect the positive end of each external 2200 F 63V electrolytic capacitor to each positive PCB output...

Page 26: ...______________________ GS61004B EVBCD Rev 200106 2020 GaN Systems Inc www gansystems com 26 Please refer to the Evaluation Board Kit Important Notice on page 27 Figure 19 Modified Block Diagram for In...

Page 27: ...d kit may be returned within 30 days from the date of delivery for a full refund THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES EXP...

Page 28: ...are not designed authorized or warranted for use in lifesaving life sustaining military aircraft or space applications nor in products or systems where failure or malfunction may result in personal i...

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