Switching power supply

Details Switching power supply Switching power supply

2005-06-21

2005-06-21

Laxton, Gary L. (Department: 2838)

Electric power conversion systems

Current conversion

With starting arrangement

C323S901000

Reexamination Certificate

active

06909618

ABSTRACT:
In relation to a starting circuit for supplying a DC supply voltage to the gate of a main switching device at a power-on to start a switching operation, a holding circuit for holding a starting voltage obtained in the starting circuit is provided. The potential at the gate of the main switching device is increased immediately from a turn-off to turn on the main switching device repeatedly, realizing a smooth transition to the steady oscillation state. This allows the switching power supply to readily start even under the condition of a low supply voltage and a heavy load. This makes it possible to improve the starting characteristic and to allow for lower power consumption.

REFERENCES:
patent: 6178100 (2001-01-01), Kitano
patent: 6483725 (2002-11-01), Schetters et al.
patent: 11-46480 (1999-02-01), None
patent: 2000-333448 (2000-11-01), None

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