Apparatus and method for supplying power to an electronic device

Details Apparatus and method for supplying power to an electronic device Apparatus and method for supplying power to an electronic device

1997-08-12

1998-06-30

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

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

H02M 3335

Patent

active

057743479

ABSTRACT:
Disclosed is a compact power supply unit that prevents an electronic device from being shut down even when due to an in-rush current phenomenon the electronic device requires a supply of power that is extraordinarily greater than that which is needed for normal operation. A CV area where constant voltage feedback control is performed on an output terminal voltage until it reaches a level V.sub.1 is continued until an output current value is I.sub.1. Then, constant current feedback control is performed with the output current I.sub.1 until the output terminal voltage falls to V.sub.2 (<V.sub.1). Further, constant current feedback control is performed with the output current I.sub.2 (<I.sub.1) in the area where the output terminal voltage is lower than V.sub.2 (more specifically, in a battery charging area).

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