Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Two Average current mode Boost PFCs in parallel.?

Flyback

Well-Known Member
Hi,
The attached (LTspice and jpeg) shows two Average current mode Boost PFC’s in parallel, and with all the “gubbins” that’s needed to facilitate this. (only 200W, because its purely a demo)

The secret is in the copying over of the Masters MOUT pin voltage over to the slave.

It also needs to use current sense transformers, and hence the duty cycle clamp cctry , which limits duty cycle to 0.9max, allowing the current sense transformers to always get reset.

Can you think of a lower component count way to do this?
 

Attachments

  • LT1248 Boost PFC plleld_DCclamp.asc
    34.4 KB · Views: 40
  • Two Boost PFCs in parallel.jpg
    Two Boost PFCs in parallel.jpg
    195.3 KB · Views: 48

Latest threads

New Articles From Microcontroller Tips

Top