Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17370
Title: Analysis and experimental evaluation of single-switch fast-response switching regulators with unity power factor
Authors: Siu, KW
Lee, YS
Tse, CK 
Keywords: Fast output-voltage regulation
Power-factor correction
SSIPP
Issue Date: 1997
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on industry applications, 1997, v. 33, no. 5, p. 1260-1266 How to cite?
Journal: IEEE transactions on industry applications 
Abstract: Based on a single-stage isolated power-factor-corrected power supply (SSIPP or S2IP2) employing a boost power-factor-correction (PFC) cell, the relationship between the input line voltage and line current of such switching regulators is studied. The conditions for unity power factor are derived. A control scheme to reduce the switch voltage stress while maintaining unity power factor is proposed. Practical implementation of the proposed control scheme is discussed. It is found that, by adding a simple input voltage feedforward to a conventional PWM controller, the switch voltage stress can be much reduced, while keeping the power factor very close to unity. Analysis and experimental results indicate that such a scheme is effective and feasible.
URI: http://hdl.handle.net/10397/17370
ISSN: 0093-9994
EISSN: 1939-9367
DOI: 10.1109/28.633804
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