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Electronics => Beginners => Topic started by: Thepunydiode on May 03, 2020, 11:42:04 am

Title: Switching MOSFET
Post by: Thepunydiode on May 03, 2020, 11:42:04 am

I am currently working on DIY buck converter, and I am using IRFZ44N (N- Channel Mosfet) as a switch. I tried to switch it at 37kHz. The problem I had noticed that the mosfet is not producing sqaure wave it's waveform looks like the charging of capacitor. But at low frequency everything works fine. I am giving 12v gate supply. If I am making any mistake please correct it.

Title: Re: Switching MOSFET
Post by: xavier60 on May 03, 2020, 12:00:05 pm

There might not be enough Gate drive current. You will need to post the schematic.

Title: Re: Switching MOSFET
Post by: Simon on May 18, 2020, 06:59:06 am

https://www.eevblog.com/forum/beginners/switching-mosfet-242488/msg3072134/#msg3072134 (https://www.eevblog.com/forum/beginners/switching-mosfet-242488/msg3072134/#msg3072134)