Two-Phase Interleaved Critical Mode PFC Boost Converter With Closed Loop Interleaving Strategy

Author

Xu, Xiaojun ; Liu, Wei ; Huang, Alex Q.

Author_Institution

Semicond. Power Electron. Center, North Carolina State Univ., Raleigh, NC, USA

Volume

24

Issue

12

fYear

2009

Firstpage

3003

Lastpage

3013

Abstract

This paper presents a two-phase interleaved critical mode (CRM) power factor correction (PFC) boost converter with a novel closed loop interleaving technique. This new interleaving technique makes each phase work at ideally CRM. Natural current sharing and precise 180^?? phase shift are achieved. The scheme can be easily integrated into a PFC control chip. Full-order averaged model of CRM boost is derived to analyze the stability of the converter. The loop response and stability of the closed-phase regulation loop have been analyzed. A 400 W two-phase interleaved CRM PFC boost converter prototype is built. This proposed scheme is verified by simulation and experimental results.

Keywords

closed loop systems; power convertors; power factor correction; stability; closed loop interleaving strategy; closed-phase regulation loop; power 400 W; power factor correction boost converter; power factor correction control chip; stability; two-phase interleaved critical mode; Boost; critical mode (CRM); interleaving; power factor correction (PFC); two phase;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2009.2019824

Filename

5233848