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User’s Guide
HB2637L-EVK-301
© 2022 ROHM Co., Ltd.
No. 65UG002E Rev.001
Apr. 2022
To characterize the low side device, a jumper must be placed between HS_PWM and GND of the connector CO2. Provide the
necessary pulse on the LS_PWM pin of connector CO2 or at the BNC connector provided on the board. Choose the appropriate
inductor and the pulse width such that the required drain current for the test is achieved. On the board a 5uF bulk capacitor is
already provided, however depending on the test current level, an external bulk capacitor will be required to minimize the DC
link voltage drop.
Set the required HVDC voltage and do not exceed above 900V. For performing the double pulse measurements a heatsink is
not required.
Other topologies such as buck, boost, synchronous buck/boost, 2-level inverter are also possible. For such topologies depend-
ing on output power a heatsink might be required. Figures 14, 15 and 16 show the setup and connection required for a synchro-
nous buck, synchronous boost and 2-level inverter respectively.
Figure 14: Synchronous Buck Converter test set up
Figure 15: Synchronous Boost Converter test set up
