Re: MOSFET GOT XTREMELY HOT

On Thu, 8 May 2008 14:30:27 -0700 (PDT), bigcaboy@xxxxxxxxx wrote:


I just used the IRFP044 as picture shows but it gets extremely hot at
8A DC. It buzzed and I saw a sine wave stacked DC at Gate. Is't
caused by the linear region resistance?

got a picture from other website:

http://www.unsp.com.cn/app/pic/2006526115419.jpg



or any other reasons?

Thanks,
Powerboy

I see unstable has already been mentioned.

Even in stable operation it's still a bit of heat.
The IRF640 will waste 9.6W @8A. Hopefully heat sinked ok.


D from BC
British Columbia
Canada
.

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