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GS65011-EVBEZ 

EZDrive

TM

 Open Loop Boost Evaluation Board 

User’s Guide 

_____________________________________________________________________________________________________________________ 

 

GSWPT-EVBEZ Rev190621 

© 2019 GaN Systems Inc. 

www.gansystems.com                          17 

 

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

 

 

 

Technical Resources 

This document and additional technical resources are available for download from 

www.gansystems.com.

  

 

Evaluation Board/kit Important Notice 

 

 
GaN Systems Inc. (GaN Systems) provides the enclosed product(s) under the following 

AS IS 

conditions: 

 
This evaluation board/kit being sold or provided by GaN Systems is intended for use for 

ENGINEERING 

DEVELOPMENT, DEMONSTRATION, and OR EVALUATION PURPOSES ONLY

 and is not considered by 

GaN Systems to be a finished end-product fit for general consumer use. As such, the goods being sold or provided 
are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective 
considerations, including but not limited to product safety and environmental measures typically found in end 
products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does not fall 
within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances 
(RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these 
directives, or other related regulations. 
 
If this evaluation board/kit does not meet 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 SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, 
EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR 
FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER 
PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR 
CONSEQUENTIAL DAMAGES. 
 
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user 
indemnifies GaN Systems from all claims arising from the handling or use of the goods. Due to the open 
construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard 
to electrostatic discharge.  
 
No License is granted under any patent right or other intellectual property right of GaN Systems whatsoever. 

GaN 

Systems assumes no liability for applications assistance, customer product design, software performance, or 

infringement of patents or any other intellectual property rights of any kind. 

 
GaN Systems currently services a variety of customers for products around the world, and therefore this 
transaction 

is not exclusive

 

Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior 

to handling the product.

 Persons handling the product(s) must have electronics training and observe good 

engineering practice standards.   
 
This notice contains important safety information about temperatures and voltages. For further safety concerns, 
please contact a GaN Systems’ application engineer. 

 

 

 

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...

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