Single stage PFC power converter

Details Single stage PFC power converter Single stage PFC power converter

2005-10-04

2005-10-04

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S021120

Reexamination Certificate

active

06952354

ABSTRACT:
A single stage PFC power converter is provided for performing a PFC function in a half-bridge flyback power converter. A high-side switch and a low-side switch periodically supply an input voltage to a primary winding of a transformer. When the high-side switch and low-side switch are switched off, the energy stored in the transformer will be transmitted to a secondary circuit and charged to a bulk capacitor. The bulk capacitor serves to recycle the energy and reduce the output ripple noise. A forward diode and a forward inductor serve to forward the energy of the bulk capacitor to the flowing path of the input voltage for performing PFC function.

REFERENCES:
patent: 6031748 (2000-02-01), Hong
patent: 6507500 (2003-01-01), Liang
patent: 6538906 (2003-03-01), Ke et al.
patent: 6717827 (2004-04-01), Ota
patent: 6862194 (2005-03-01), Yang et al.
patent: 6862197 (2005-03-01), Eriksson
patent: 3133578 (1983-03-01), None

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