Semiconductor device used in step-up DC-DC converter, and...

Details Semiconductor device used in step-up DC-DC converter, and... Semiconductor device used in step-up DC-DC converter, and...

2007-06-08

2010-11-30

Gurley, Lynne A (Department: 2811)

Active solid-state devices (e.g., transistors, solid-state diode

Regenerative type switching device

Bidirectional rectifier with control electrode

C257S104000, C257S288000, C257S367000, C257S570000, C257S467000, C257S498000, C257S551000, C257S603000, C257S565000, C257SE27064, C257SE29174, C257SE29195, C257SE29199, C257SE29330, C257SE29332, C323S282000

Reexamination Certificate

active

07842967

ABSTRACT:
A power supply device is disclosed that is able to satisfy the power requirements of a device in service and has high efficiency.The power supply device includes a first power supply; a voltage step-up unit that steps up an output voltage of the first power supply; a voltage step-down unit that steps down an output voltage of the voltage step-up unit; and a load that is driven to operate by an output voltage of the voltage step-down unit. The voltage step-up unit steps up the output voltage of the first power supply to a lower limit of an operating voltage of the voltage step-down unit.

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