Current peaks during the operation of the asynchronous boost converter

NilsL

Hello,

I have been doing measurements with the MODMBHB0900V40A motherboard together with the MODACCBUCKBOOST190uH filter board in the asynchronous boost converter configuration. MODPWRMMC3M0045065K daughter card is being tested. I am using a power resistor of 17 Ohms with a 100 V output voltage operating at 20 kHz. The waveforms follow the expected shapes, however, the current peaks for the bottom switch during the turn-on exceed 40A, as can be seen in the picture below. The documentation says that the maximum continuous current for both boards is 40A, however, I could not find what is the maximum peak current.

Could you provide advice on what current peaks are safe to operate within?

Nils

Forum_Moderator

Thank you for your post, it has been approved and we will respond as soon as possible.