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_____________________________________________________________________________________________________________________
GS65011-EVBEZ
GaN E-HEMT EZ Drive
Evaluation Board
Technical Manual
Visit
www.gansystems.com
GSWPT-EVBEZ Rev. 210307
EZDrive
for the latest version of this technical manual.
© 2021 GaN Systems Inc.
Please refer to the Evaluation Board/Kit Important Notice on page 17
®
Open Loop Boost Evaluation Board
®
Open Loop Boost
www.gansystems.com
GS65011-EVBEZ
Technical Manual
1
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Table of Contents
Summary of Contents for GaN EZ Drive GS65011-EVBEZ
- Page 1 GaN E-HEMT EZ Drive ® Open Loop Boost Evaluation Board Technical Manual Visit www.gansystems.com for the latest version of this technical manual. GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
- Page 2 ESD prevention procedures when handling the product. Avoid applying excessive voltages to the power supply terminals or signal inputs or outputs GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
- Page 3 GaN Systems’ EZDrive solution with a GaN ® Systems’ E-HEMT. The EZDrive circuit is a low-cost, easy way to implement a GaN driving circuit using a ® standard MOSFET controller with integrated driver. The EZDrive circuit provides ®...
- Page 4 Technical Manual _____________________________________________________________________________________________________________________ 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 •...
- Page 5 3. Vout 0~400V EZDrive 0~200V GS-065- 011-1-L 5~12V PWM CONTROL OFF2 OFF2 CIRCUIT Figure 2 • GS65011-EVBEZ Block Diagram GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
- Page 6 GS65011-EVBEZ EZDrive Open Loop Boost Evaluation Board ® Technical Manual _____________________________________________________________________________________________________________________ Figure 3 • GS65011-EVBEZ Schematic GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
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Page 7: Circuit Description
When operating at a high duty cycle and low load/no load operating conditions, the output voltage will rise and has the potential of damaging the GaN device. To avoid an overvoltage on the GaN device, two actions are recommended. First,... - Page 8 Case 4 1.15 100 % Table 2 • PWM Frequency Setting up table SW_MIN SW_MAX R3 (kΩ) CT (pF) (kHz) GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
- Page 9 • The maximum load current depends on die temperature and is further subject to switching frequency and operating voltage. Forced air cooling or heat sinking can increase current rating. GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
- Page 10 Precautions” on page 2 are followed. PWM FREQ ADJ MEAS PWM DUTY ADJ VIN Input (0VDC<VIN<200VDC) Figure 5 • GS65011-EVBEZ Test Setup GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
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Page 11: Hardware Operation
Make sure V is lower than 400V, and the GaN device temperature is lower than 150°C. Note: the maximum input voltage is limited by the output voltage of the Boost converter, which is dependent on the operating mode, the duty cycle and the load value. - Page 12 The jumper wire loop and the current probe are not included in the Evaluation Kit. GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
- Page 13 Open Loop Boost Evaluation Board Technical Manual _____________________________________________________________________________________________________________________ Jumper Figure 7 • Current Sensing Jumper Location Figure 8 • Inductor Current Probe Insert Example GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17...
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Page 14: Evaluation Results
=250kHz Duty cycle 250kHz Efficiency 97.3% Test conditions: V =200V; V =400V; I =0.5A; P =200W (full load); f =250kHz GSWPT-EVBEZ Rev. 210307 © 2021 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 17... - Page 15 GS65011-EVBEZ EZDrive ® Open Loop Boost Evaluation Board Technical Manual _____________________________________________________________________________________________________________________ Figure 9 • Efficiency & GaN E-HEMT temperature vs load Efficiency & GaN E-HEMTtemperature vs load 97.25% 97.27% 96.70% 44.8 39.8 34.8 28.4 Test conditions: V =200V, V =400V, f =250kHz Figure 10 •...
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Page 16: Thermal Considerations
Technical Manual _____________________________________________________________________________________________________________________ Thermal Considerations The EVB includes one GS-065-011-1-L GaN E-HEMT. Although the electrical performance surpasses that for traditional silicon devices, their relatively smaller size does magnify the thermal management requirements. The evaluation board is intended for bench evaluation under low ambient temperature and with convection cooling. - Page 17 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.
- Page 18 The information given in this document shall not in any event be regarded as a guarantee of performance. GaN Systems hereby disclaims any or all warranties and liabilities of any kind, including but not limited to warranties of non-infringement of intellectual property rights.
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