GSP665x-EVBIMS2
High Power IMS 2 Evaluation Platform
Technical Manual
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GSP665x-EVBIMS2 TM rev. 201021
© 2020 GaN Systems Inc.
Please refer to the Evaluation Board/Kit Important Notice on page 22
1
Overview
1.1
Introduction
A frequent challenge for power designers is to engineer a product that has excellent power density and
reduced cost of the system simultaneously.
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.
Examples of applications that have successfully used this approach include:
•
Automotive:
3.3kW-22kW on board charger, DC/DC, 3-
Φ
inverter, high power wireless charger
•
Industrial:
3-7kW Photovoltaic Inverter and Energy Storage System (ESS), Motor Drive / VFD
•
Server/Datacenter:
3kW Server ACDC power supply.
•
Consumer:
Residential Energy Storage System (ESS)
This evaluation platform consists of two parts: the IMS 2 EVB board (mother board) and the IMS 2 half
bridge power board, as show in Figure 1. The IMS 2 half bridge power board is available in 2 power levels:
3kW and 6kW.
A suitable heatsink is included for lower power applications. For higher power applications additional
heatsinking may be required. To prevent device damage, ensure adequate heatsinking through design and
by monitoring the component temperatures during operation.
To assemble a heatsink, apply thermal grease to the heatsink / IMS board interface before screwing the
units together. Enough thermal grease should be applied so that a small amount extrudes on all four sizes
as the screws are tightened. Wipe the assembly clean.
Figure 1 IMS 2 EVB mother board and IMS 2 half bridge power module with heatsink
With these building blocks, the evaluation platform can be purchased in 4 different configurations: low
power and high power, half bridge and full bridge. Table 1 lists the ordering options.
