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User’s Guide
HB2637L-EVK-301
© 2022 ROHM Co., Ltd.
No. 65UG002E Rev.001
Apr. 2022
Figure 2 shows a simple block diagram of the evaluation board. The board is powered through a 15V~18V external power supply.
A total of three supplies are generated on the board. There is a LDO for generating 5V from the input supply of 15~18V on the
connector CO1. This 5V is necessary for powering the input side of the isolated gate drivers. The other two are the isolated power
supplies required to supply the HV side of the isolated gate drivers.
The isolated power supply is realized with a simple half bridge converter that outputs two positive rails (VCC2) and two negative
rails (VEE2) necessary for high side and low side devices respectively.
Figure 3: Top view of the board with key components marked
3.1
Connector assignments
There are a total of 6 connectors on the evaluation board. Figure 4 shows the picture of connectors CO1 and CO2 with the
respective pin assignments.
Figure 3: Pin assignment of CO1 (left) and CO2 (right)
SCT4036KW7
BM61S41RFV-C
