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GS65011-EVBEZ
EZDrive
Open Loop Boost Evaluation Board
TM
User's Guide
_____________________________________________________________________________________________________________________
GS65011-EVBEZ
GaN E-HEMT EZ Drive
Open Loop Boost
TM
Evaluation Board
User's Guide
Visit
www.gansystems.com
for the latest version of this user's guide.
GSWPT-EVBEZ Rev190621
© 2019 GaN Systems Inc.
www.gansystems.com
1
Please refer to the Evaluation Board/Kit Important Notice on page 15
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Summary of Contents for Gan Systems GS65011-EVBEZ
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Page 1: Evaluation Board
GaN E-HEMT EZ Drive Open Loop Boost Evaluation Board User’s Guide Visit www.gansystems.com for the latest version of this user’s guide. GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15... - 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 Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
- Page 3 EZDrive Open Loop Boost Evaluation Board User’s Guide _____________________________________________________________________________________________________________________ Introduction The GS65011-EVBEZ Evaluation Board (EVB) is an open loop Boost converter and was designed to help customers evaluate 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.
- Page 4 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 GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
- Page 5 Figures 2 and 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 Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
- Page 6 GS65011-EVBEZ EZDrive Open Loop Boost Evaluation Board User’s Guide _____________________________________________________________________________________________________________________ Figure 3 • GS65011-EVBEZ Schematic GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
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Page 7: Circuit Description
User’s Guide _____________________________________________________________________________________________________________________ Circuit Description The GS65011-EVBEZ EVB is a GaN-based open-loop DC/DC Boost converter. It is assembled with the EZDrive GaN driving circuit, a Si MOSFET PWM controller (TL1454ACNSR) and a 650V 5×6 mm PDFN package GaN E-HEMT, (GS-065-011-1-L). - Page 8 Freq control input RT=120pF; RT=R3+RT2=25kΩ; Fsw=200kHz GS65011-EVBEZ PWM signal adjustment diagram Figure 4 • The PWM signal is adjusted by tuning the controller’s peripheral resistors, R11 and R3. Use the to set the duty cycle with R11. Use to set the switching frequency with R3.
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Page 9: Quick Start Guide
• 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 Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15... - Page 10 Open Loop Boost Evaluation Board User’s Guide _____________________________________________________________________________________________________________________ Evaluation Test Setup Figure 5 shows the test setup for the GS65011-EVBEZ evaluation board. Make sure that the specified safety precautions mentioned in “Safety Precautions” on page 2 are followed. PWM FREQ ADJ...
- Page 11 7) After testing, turn off V first, then V across Vcc+ and Vcc- last. GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
- Page 12 The jumper wire loop and the current probe are not included in the Evaluation Kit. GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
- Page 13 Open Loop Boost Evaluation Board User’s Guide _____________________________________________________________________________________________________________________ Jumper Current Sensing Jumper Location Figure 7 • Figure 8 • Inductor Current Probe Insert Example GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
- Page 14 400V =250kHz Duty cycle 250kHz Efficiency 97.3% Test conditions: V =200V; V =400V; I =0.5A; P =200W (full load); f =250kHz GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
- Page 15 Efficiency & VIN vs load 97.7% 97.0% 209.2 96.1% 96.0% 95.8% 202.4 198.08 197.3 Test conditions: Duty cycle=40.8%, V =400V, f =250kHz GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15...
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Page 16: Thermal Considerations
• I = 0.5A • f = 250 KHz Thermal imaging with an external fan (T = 44.8˚C) Figure 11 • GSWPT-EVBEZ Rev190621 © 2019 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 15... - 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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