Active Power Factor Correction (PFC) Circuit With Resistor-Free Zero-Current Detection

Author

Roh, Yong-Seong ; Moon, Young-Jin ; Gong, Jung-Chul ; Yoo, Changsik

Author_Institution

Integrated Circuits Lab., Hanyang Univ., Seoul, South Korea

Volume

26

Issue

2

fYear

2011

Firstpage

630

Lastpage

637

Abstract

An active power-factor correction (PFC) circuit is presented that employs a newly proposed resistor-free zero-current detection (ZCD). While the conventional ZCD requires either a sensing resistor or auxiliary transformer, the proposed ZCD requires only one OFF-chip capacitor. The active PFC circuit with the proposed resistor-free ZCD has been implemented in a 0.35-μm BCDMOS process and the power factor is improved up to 9% from the one employing the conventional ZCD. The proposed resistor-free ZCD scheme can be applied to any type of switch-mode dc-dc power converter.

Keywords

BIMOS integrated circuits; DC-DC power convertors; power factor correction; switched mode power supplies; BCDMOS process; active power factor correction; auxiliary transformer; off chip capacitor; resistor free zero current detection; sensing resistor; size 0.35 mum; switch mode dc-dc power converter; Critical conduction mode (CRM); discontinuous conduction mode (DCM); power-factor correction (PFC); zero-current detection (ZCD);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2010.2070080

Filename

5559485