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User’s Guide
HB2637L-EVK-301
© 2022 ROHM Co., Ltd.
No. 65UG002E Rev.001
Apr. 2022
1.
Safety Precautions
Caution:
This evaluation board may only be used by authorized personnel that is properly trained in
recognizing and dealing with the dangers of testing high voltage equipment and generally experi-
menting with high voltage circuits. This board should only be used in a lab facility properly equipped
for the safe testing of power electronic systems at the relevant voltage levels. Failure to comply may
result in damage to equipment, personal injury or death.
Warning:
The DC link and input voltage of this board may reach up to 900 V. Ensure that only
suitable high voltage differential probes are used to measure at this voltage. Failure to do so may
result in damage to equipment, personal injury or death.
Warning:
This evaluation board contains DC bus capacitors which take time to discharge after re-
moval of the power supplies. Before working on the evaluation board wait at least six minutes after
deactivating all connected power supplies to ensure that the capacitors have discharged to a safe
level.
Warning:
Ensure that you use only appropriate measurement equipment for the voltage levels pre-
sent on the board. Ensure not to ground live parts through unsuitable measurement probes or tie
different grounds together using passive probes. Suitable high voltage differential probes should be
used. Failure to do so may result in damage to equipment, personal injury or death
Warning:
Before disconnecting, connecting or reconnecting wires or measurement probes to the
board or before touching the board or performing any manipulations on the board ensure that all
external power is removed or disconnected from the board and at least six minutes have passed to
ensure the capacitors have discharged to a safe level and then ensure that the capacitor voltages
have dropped to a safe level.
Failure to do so may result in damage to equipment, personal injury or death.
Caution:
The heatsink and some component surfaces on the evaluation board may become hot
during testing and remain hot for a certain time after turn-off. Take appropriate measures while
handling the board after use. Failure to do so may cause personal injury.
Caution:
Incorrect connection of power supplies or loads can damage the board. Carefully review
the information in this document.
