Power factor correction boost converter 's Mosfet question

Thread Starter

Wong Ringo

Joined Feb 8, 2016
6
Hi,

I have been working on a PFC circuit and ran into a problem with my MOSFET. It is making a vibrating sound and gets hot. I get a decent output in my load though. I have no idea what is going on with the MOSFET and how to fix it.



Specification:

I design the circuit by following the guideline here :
http://www.onsemi.com/pub_link/Collateral/AND8184-D.PDF

And this is the schematic of the circuit
upload_2016-12-11_20-30-27.png
 

crutschow

Joined Mar 14, 2008
24,129
As I said in your other post on this subject, and as ErnieM stated, you need to check the inductor for saturation.
So you do have an idea what's going on, you just choose to ignore it. :rolleyes:
 
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