fail of MasterGan4

[ZHT]

I find the wavefrom of SW terminal(the connection of the bridge) is wrong. The frequency is consistent with the input signal but the Amplitude is 3V3. But there's no 3V3 power supply. It should have been the VIN I offer. And it's exactly a square wave. What may cause this case?

[Peter BENSCH]

Welcome @ZHT, to the community!

Please forgive my lack of understanding, but the MASTERGAN4 has no terminal SW.

• Could it be that you mean a ready-made board?
• Is this board from STMicroelectronics, e.g. an evaluation board?

Regards
/Peter