期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 36, 期 1, 页码 188-193出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/28.821814
关键词
boost converter; power-factor correction; rectifiers
Consumer and household applications require cheap ac/dc power supplies complying with EMC standards, Passive solutions are bulky and do not pro,ide output voltage stabilization. Active solutions based on power-factor correctors (PFC's) with high-frequency switching provide compactness and regulation capability, but are generally expensive due to the need for fast-recovery diodes and complex EMI filters. This paper describes a boost PFC in which the switch is turned on and off only twice per line period. This results in Limited di/dt and dv/dt and switch losses, allows use of slow-recovery diodes, and avoids the need for heavy EMI filters. In addition, the output,voltage can be stabilized in a broad load range by a simple control. The snitching unit, including control and protection, can also be integrated in a simple smart-power IC for large-volume applications.
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