From: Bob Blick <bobblick@outlook.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Sun, 16 May 2021 15:31:35 -0700
Subject: [EE] Power Factor Correction
Thread-Topic: [EE] Power Factor Correction
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I wonder if anyone here has any experience with power factor correction for=
 switching power supplies. I don't, but have read this document from OnSemi=
:

https://www.onsemi.com/pub/Collateral/HBD853-D.PDF

Basically it looks like a varying current-mode boost regulator with 385 vol=
t output, feeding a normal switching supply, is the simplest. Especially if=
 you already have the power supplies and went cheap and bought the ones wit=
hout PFC built in.

Discontinuous mode is the easiest to stabilize, but if I go that route I'll=
 need bigger or more MOSFETs to handle the current. On the other hand, if I=
 breadboarded something touchy with continuous mode, I'll probably kill lot=
s of devices and then just give up in disgust. I'll probably start small be=
fore trying to build a 2KW unit, which is my goal.

Anyway, if anyone has built a PFC controller, I'd love to hear. BTW, this i=
s just a hobby project for me.

Thank, Bob
--=20
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