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User’s Guide
HB2637L-EVK-301
© 2022 ROHM Co., Ltd.
No. 65UG002E Rev.001
Apr. 2022
Figure 9: Current measurement set up with Rogowski coil
The frequency bandwidth of most of the Rogowski probes are limited upto 30MHz, whereas co-axial shunts support several
hundreds of MHz. In this board, there is a provision to use co-axial shunts for device current measurements. As shown in Figure
10, on jumper J1, co-axial shunt can be soldered. It must be noted that a low inductive co-axial shunt must be used for measure-
ments otherwise unnecessary oscillations can lead to characterization errors. Since the measurements using co-axial shunts are
non-isolated and the ground of the oscilloscope is directly connected to the DUT source, care must be taken to use appropriate
DC power supply and load that will support this.
Figure 10: Current measurement set up with a co-axial shunt
