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_____________________________________________________________________________________________________________________
IMS 2 Evaluation Platform
Technical Manual
GSP665HPMB-EVBIMS2
GSP66508HB-EVBIMS2
GSP66516HB-EVBIMS2
Visit
www.gansystems.com
GSP665x-EVBIMS2 TM rev. 201021
for the latest version of this technical manual.
© 2020 GaN Systems Inc.
Please refer to the Evaluation Board/Kit Important Notice on page 22
High Power IMS 2 Evaluation Platform
www.gansystems.com
GSP665x-EVBIMS2
Technical Manual
1
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Summary of Contents for Gan Systems GSP665HPMB-EVBIMS2
- Page 1 IMS 2 Evaluation Platform Technical Manual GSP665HPMB-EVBIMS2 GSP66508HB-EVBIMS2 GSP66516HB-EVBIMS2 Visit www.gansystems.com for the latest version of this technical manual. GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22...
- Page 2 This product contains parts that are susceptible to damage by electrostatic discharge (ESD). Always follow ESD prevention procedures when handling the product. GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22...
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Page 3: Table Of Contents
Operation modes .......................... 13 Test Results ..............................14 Double pulse test (GSP665HPMB-EVBIMS2 + GSP66508HB-EVBIMS2) ........14 Full power emulation test (GSP665HPMB-EVBIMS2 + GSP66508HB-EVBIMS2) ......15 Appendix ..............................17 IMS 2 Half Bridge Power Board ....................... 17 IMS 2 EVB Mother board - GSP665HPMB-EVBIMS2 ..............19 GSP665x-EVBIMS2 TM rev. - Page 4 Figure 5 IMS 2 half bridge power board (GSP66508HB-EVBIMS2) ..............9 Figure 6 Circuit block diagram of IMS 2 EVB board ..................10 Figure 7 GSP665HPMB-EVBIMS2 ........................10 Figure 8 Gate driver circuit ..........................11 Figure 9 External PWM signals connector ....................... 12 Figure 10 - Cross section view of IMS assembly showing the power Loop path ..........
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Page 5: Overview
This IMS evaluation platform demonstrates an effective way to improve heat transfer, to increase power density and reduce system cost. An Insulated Metal Substrate PCB (IMS PCB) is used to cool GaN Systems’ bottom-side cooled power transistors. An IMS PCB is also known as Metal Core/Aluminum PCB. -
Page 6: Ims 2 Evaluation Platform Overview
(Enhancement mode High Electron Mobility Transistors) in high power, high efficiency applications. The IMS 2 half bridge power board is populated with GaN Systems’ GS66516B (bottom-side cooled E-HEMT, rated at 650 V / 25 mΩ) or GS66508B (bottom-side cooled E-HEMT, rated at 650 V / 50 mΩ). The embedded ®... -
Page 7: Ims Board Thermal Design
Evaluate the GaN E-HEMT performance in any half bridge based topology, over a range of operating conditions. This can be done using either the accompanying power motherboard (P/N: GSP665HPMB-EVBIMS2) or with the users’ own board for in-system prototyping. • Use as a thermal and electrical design reference of the GS66516B or GS66508B GaN ®... -
Page 8: Figure 4 Comparison Of Junction To Heatsink Thermal Resistance
Figure 4 Comparison of Junction to Heatsink thermal resistance (R ) (Estimated based on GS66516B) thJ-HS GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22... -
Page 9: Ims 2 Half Bridge Board Design
The IMS 2 evaluation platform is implemented as a two-board asssembly. The gate drive circuitry is assembled on the GSP665HPMB-EVBIMS2, a multi-layer FR4 PCB mother board. This includes the gate driver ICs, an isolated push-pull power supply to power the driver IC, and DC decoupling capacitors. -
Page 10: Ims 2 Evb Mother Board
1.4 IMS 2 EVB Mother Board GaN Systems offers a high-power IMS 2 evaluation board that can be purchased separately. The ordering part number is GSP665HPMB-EVBIMS2. It can be used as a platform for evaluating the IMS board in any half or full bridge topology. -
Page 11: Gate Driver Circuit
The user is responsible for monitoring the temperature of the devices to ensure operation remains within specification. GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22... -
Page 12: External Pwm Signals Input
IMS 2 EVB PCB. The power loop path is highlighted as below. Figure 10 - Cross section view of IMS assembly showing the power Loop path GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22... -
Page 13: Operation Modes
Vdc+ Vdc+ Vdc+ Vdc+ Power Source Power Source Gate Vdc- Driver Gate Gate Vdc- Driver Driver PGND PGND PGND GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22... -
Page 14: Test Results
GSP665x-EVBIMS2 High Power IMS 2 Evaluation Platform Technical Manual _____________________________________________________________________________________________________________________ 2 Test Results 2.1 Double pulse test (GSP665HPMB-EVBIMS2 + GSP66508HB-EVBIMS2) • Test condition: V = 400V, I = 30A, V = +6V/-3V, L = 37uH, No RC Snubber, T =25℃... -
Page 15: Full Power Emulation Test (Gsp665Hpmb-Evbims2 + Gsp66508Hb-Evbims2)
GSP665x-EVBIMS2 High Power IMS 2 Evaluation Platform Technical Manual _____________________________________________________________________________________________________________________ 2.2 Full power emulation test (GSP665HPMB-EVBIMS2 + GSP66508HB-EVBIMS2) • Test condition: V = 400V, f =500kHz, Po=1kW, T = 25℃. • Device case temperature 57℃ Vdc+ Vdc+ Power Source Gate... - Page 16 _____________________________________________________________________________________________________________________ Ch#3 (purple): Inductor current, 2A/div Ch#4 (green): Switching node Voltage, 250V/div Figure 15 Test waveforms (400Vin, 500kHz, Po=1.2kW) GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22...
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Page 17: Appendix
IMS 2 half bridge power board assembly IMS 2 half bridge power board assembly drawing (for GSP66508HB-EVBIMS2) drawing (for GSP66516HB-EVBIMS2) GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22... - Page 18 IMS 2 half bridge power board PCB layout top layer (for GSP66508HB-EVBIMS2) layer (for GSP66516HB-EVBIMS2) IMS 2 Half Bridge Power Board Bill of Materials (BOM) GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22...
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Page 19: Ims 2 Evb Mother Board - Gsp665Hpmb-Evbims2
GSP665x-EVBIMS2 High Power IMS Evaluation Platform Technical Manual ______________________________________________________________________________________________________________________________________________________________________ 3.2 IMS 2 EVB Mother board - GSP665HPMB-EVBIMS2 IMS 2 EVB mother board schematics – GSP665HPMB-EVBIMS2 GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22... - Page 20 GSP665x-EVBIMS2 High Power IMS Evaluation Platform Technical Manual ___________________________________________________________________________________________________________________ IMS 2 EVB mother board assembly drawing (top layer) - GSP665HPMB-EVBIMS2 Top Layer Mid Layer 1 GSP665x-EVBIMS2 TM rev. 201021 © 2020 GaN Systems Inc. www.gansystems.com Please refer to the Evaluation Board/Kit Important Notice on page 22...
- Page 21 High Power IMS Evaluation Platform Technical Manual ___________________________________________________________________________________________________________________ Bottom Layer Mid Layer 2 IMS 2 EVB mother board PCB layout (4-layer PCB) - GSP665HPMB-EVBIMS2 IMS 2 EVB mother board Bill of Materials (BOM) – GSP665HPMB-EVBIMS2 Quant Manufacturer Part Designator Description...
- Page 22 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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