Gan Systems GS65011-EVBEZ User Manual Download Page 4

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GS65011-EVBEZ

EZDrive

Open Loop Boost Evaluation Board

User’s Guide

_____________________________________________________________________________________________________________________

GSWPT-EVBEZ Rev190621

www.gansystems.com 4

Please refer to the Evaluation Board/Kit Important Notice on page 15

Evaluation Board Assembly Overview

The EVB is assembled with the EZDrive

circuit and one GS-065-011-1-L GaN E-HEMT.

Headers are included for power connections. A probe connecter and vias are included for
waveform measurements.

Figure 1 •

GS65011-EVBEZ Evaluation Board Assembly

Summary of Contents for GS65011-EVBEZ

Page 1: ...___________________________________________________ GSWPT EVBEZ Rev190621 2019 GaN Systems Inc www gansystems com 1 Please refer to the Evaluation Board Kit Important Notice on page 15 GS65011 EVBEZ G...

Page 2: ...ere 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: ...r with integrated driver The EZDriveTM circuit provides design control for the optimization of efficiency and EMI It is adaptable to any power level any frequency and any LLC and PFC controller The bo...

Page 4: ...Z Rev190621 2019 GaN Systems Inc www gansystems com 4 Please refer to the Evaluation Board Kit Important Notice on page 15 Evaluation Board Assembly Overview The EVB is assembled with the EZDriveTM ci...

Page 5: ...Rev190621 2019 GaN Systems Inc www gansystems com 5 Please refer to the Evaluation Board Kit Important Notice on page 15 Block Diagram and Schematic The block diagram and schematic of the evaluation b...

Page 6: ...______________________________________________________________________________________________________________ GSWPT EVBEZ Rev190621 2019 GaN Systems Inc www gansystems com 6 Please refer to the Evalu...

Page 7: ...iveTM circuit is shown in the dotted box in Figure 2 It is a low cost low component count circuit composed of two Zener diodes one capacitor three resistors and one diode ZDEZ1 ZDEZ2 clamp the positiv...

Page 8: ...WM signal before applying power to VIN Figure 4 shows the block diagram of PWM signal generation inside the TL1454ACNSR PWM output Duty Cycle Control Freq control input RT 120pF RT R3 RT2 25k Fsw 200k...

Page 9: ...oltage 0Vdc VIN 200Vdc and low voltage 5Vdc VCC 12Vdc power supplies Connector for the output load User friendly probe connector and vias for VGS VDS measurement and other performance verification The...

Page 10: ...www gansystems com 10 Please refer to the Evaluation Board Kit Important Notice on page 15 Evaluation Test Setup Figure 5 shows the test setup for the GS65011 EVBEZ evaluation board Make sure that th...

Page 11: ...requency 250kHz 2 Apply VCC 5VDC VCC 12VDC to Vcc and Vcc use T_GS MMCX JACK or G SS VIAS for VGS monitoring 3 Check the VGS waveform and fine tune the PWM frequency by tuning R3 and duty cycle by tun...

Page 12: ...Drain via and Source via designed for this purpose See Figure 6 for proper probe technique and Figure 5 for the location of VGS and VDS measure vias Use a high voltage passive differential probe for t...

Page 13: ..._______________________________________________________________________________ GSWPT EVBEZ Rev190621 2019 GaN Systems Inc www gansystems com 13 Please refer to the Evaluation Board Kit Important Noti...

Page 14: ...ults The evaluation results are shown in Figures 7 through 10 Figure 7 Test Results at half load VGS VDS fsw 250kHz 6V 6V IL 400V Duty cycle 21 Test conditions VIN 200V VOUT 400V IOUT 0 25A POUT 100W...

Page 15: ...re vs load Test conditions VIN 200V VOUT 400V fSW 250kHz Figure 10 Efficiency VIN vs load Test conditions Duty cycle 40 8 VOUT 400V fSW 250kHz 96 96 70 97 25 97 27 28 4 34 8 39 8 44 8 25 35 45 55 65 7...

Page 16: ...agnify the thermal management requirements The evaluation board is intended for bench evaluation under low ambient temperature and with convection cooling The addition of heat sinking and forced air c...

Page 17: ...t the specifications indicated in the User s Guide the board 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...

Page 18: ...e 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 inju...