Switching power supply, control circuit controlling...

Details Switching power supply, control circuit controlling... Switching power supply, control circuit controlling...

2011-02-01

2011-02-01

Vu, Bao Q (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using diode

C323S259000, C363S056120

Reexamination Certificate

active

07880450

ABSTRACT:
A switching power supply includes: a first switch provided between one end of a DC power supply and one end of a load; a second switch provided between a node of the first switch located on a load side and another end of the DC power supply; a capacitor provided between the second switch and the another end of the DC power supply; a third switch provided between a node of the first switch located on a DC power supply side and a node between the second switch and the capacitor; and a delay circuit that is provided between the third switch and the node between the second switch and the capacitor and delays a current for charging the capacitor, wherein the second switch is turned on in a period during which the first switch is kept on.

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John G. Kassakian, “Principles of Power Electronics,” Addison-Wesley Publishing Company, 1992, pp. 674-679.
Ahmed Elasser, “Soft Switching Active Snubbers for DC/DC Converters,” IEEE Transaction on Power Electronics, vol. 11, Issue 5, 1996, pp. 710-722.
English language International Search Report, PCT/ISA/210, for PCT/JP2007/072219, mailed on Jan. 29, 2008.

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