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

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...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2011-02, Vol.26 (2), p.630-637
Main Authors: ROH, Yong-Seong, MOON, Young-Jin, GONG, Jung-Chul, YOO, Changsik
Format: Article
Language:English
Subjects:
Applied sciences
Capacitors
Capacitors. Resistors. Filters
Circuit properties
Circuits
Critical conduction mode (CRM)
Detection
discontinuous conduction mode (DCM)
Electric currents
Electric power
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Generators
Inductors
Manganese
Power converters
Power electronics, power supplies
Power factor
power-factor correction (PFC)
Resistors
Sensors
Signal convertors
Switches
Timing
Transformers
Various equipment and components
zero-current detection (ZCD)
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Description
Summary: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.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2010.2070080