Master-slave interleaved BCM PFC controller and control method thereof

Patent metadata

Field	Value
Publication number	US-9130460-B2
Application number	US-201414217677-A
Country	US
Kind code	B2
Filing date	Mar 18, 2014
Priority date	Sep 13, 2011
Publication date	Sep 8, 2015
Grant date	Sep 8, 2015

Abstract

The present invention relates to a master-slave interleaved BCM PFC controller for controlling a PFC circuit with master and slave channels. In one embodiment, the PFC controller can include: a master channel controller that generates a master channel control signal and an inverted master channel control signal; a first phase shifter that provides a first phase shift for the master channel control signal, and generates a delayed opening signal therefrom; a second phase shifter that provides a second phase shift for the inverted master channel control signal, and generates a delayed shutdown signal therefrom; a slave channel controller that receives the delayed opening signal, the delayed shutdown signal, and a slave channel inductor current zero-crossing signal, and generates a slave channel control signal therefrom.

First claim

What is claimed is:

1. A master-slave interleaved boundary conduction mode (BCM) power factor correction (PFC) controller for controlling a PFC circuit with master and slave channels, said PFC controller comprising:
a) a first switch of said master channel, said first switch being configured to control operation of said master channel;
b) a second switch of said slave channel, said second switch being configured to control operation of said slave channel;
c) a first phase shif…

Assignees

• Silergy Semiconductor Technology Hangzhou Ltd

Inventors

• Sun Liangwei
• Huang Qiukai

Classifications

• H02M2003/1586

  Electricity · mapped topic

• H02M1/4225 Primary

  Electricity · mapped topic

• Y02B70/126

  Cross-Sectional Technologies · mapped topic

• H02M7/2176 Primary

  Electricity · mapped topic

• H02M3/1586

  Electricity · mapped topic