Step-up converter having power factor correction

Details Step-up converter having power factor correction Step-up converter having power factor correction

2006-10-03

2006-10-03

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

C315S225000

Reexamination Certificate

active

07116084

ABSTRACT:
A step-up converter has a power factor correction, has an input for connection to a supply voltage, in particular a rectified AC voltage; an inductor, a diode and a storage capacitor, which are coupled in a series arrangement between the input and the output, in which the voltage that is dropped across the storage capacitor is provided at the output; a switch, which is coupled between a junction point between the inductor and the diode, on the one hand, and a reference potential, on the other hand; and a drive circuit for the switch which controls the times for which the switch remains closed and open; the drive circuit being designed to control the time for which the switch remains closed as a function of the freewheeling time of the inductor. A method for operating such a step-up converter is also disclosed.

REFERENCES:
patent: 6060844 (2000-05-01), Chen
patent: 6600271 (2003-07-01), Chen
patent: 6690144 (2004-02-01), DeNicholas et al.
patent: 6693411 (2004-02-01), Bub et al.
patent: 01/69984 (2001-09-01), None

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