Computer system with improved DC to DC power conversion employin

Details Computer system with improved DC to DC power conversion employin Computer system with improved DC to DC power conversion employin

1998-01-27

2000-04-18

Ray, Gopal C.

Electrical computers and digital processing systems: support

Computer power control

363 26, 323267, G06F 126

Patent

active

060527900

ABSTRACT:
A personal computer includes a DC to DC converter which employs a dual function capacitive energy storage device at the output rail of the converter. The energy storage device provides both a transition control function and a bulk or output function. In this manner, the size and expense of a separate bulk capacitor is advantageously avoided. The converter includes a switching transistor coupled to a bulk inductor. The switching transistor exhibits a high frequency switching rate which is sufficiently high to permit the inductor to directly replenish the capacitive energy storage device thus enabling the converter to withstand both major and minor load fluctuations without loss of voltage regulation at the output rail.

REFERENCES:
patent: 4030015 (1977-06-01), Herko et al.
patent: 4245286 (1981-01-01), Paulkovich et al.
patent: 4355277 (1982-10-01), Davis et al.
patent: 4801859 (1989-01-01), Dishner
patent: 4940929 (1990-07-01), Williams
patent: 5140513 (1992-08-01), Yokoyama
patent: 5519307 (1996-05-01), Moon
patent: 5534768 (1996-07-01), Chavannes et al.
The AARL Handbook--1994, "Switched Mode Power Supplies" pp. 6-27 through 6-36.
"Switching Power Supply Design," by Abraham I. Pressman; pp. 3-35.

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