Advanced feed forward switch mode power suppply control

Details Advanced feed forward switch mode power suppply control Advanced feed forward switch mode power suppply control

1987-12-15

1989-05-30

Beha, Jr., William H.

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

363 25, 363 26, H02M 3156

Patent

active

048354546

ABSTRACT:
An improved DC to DC conveter is disclosed which is highly stable and has a highly regulated ouptut voltage. A pulse width modulator drives a switch for interrupting the flow of current through an inductor. A combination of feed forward and feedback control of the pulse width modulator is provided with the majority of control being provided by the feed forward component. The pulse width of the pulses from the width modulator is directly proportional to the feed forward and feedback components of the pulse duration control signal. Preferably, approximately 75%-90% of the pulse duration control signal is provided by the feed forward component.

REFERENCES:
patent: 4301497 (1981-11-01), Johari
patent: 4371917 (1983-02-01), Bator
patent: 4484256 (1984-11-01), Hartman
patent: 4536700 (1985-08-01), Bello et al.
patent: 4580089 (1986-04-01), Grunsch et al.
patent: 4594649 (1985-06-01), Rhoads et al.
patent: 4618812 (1986-10-01), Kawakami
Calvo et al., "Circuit to Linearize the Control Loop of a Switching Voltage Regulator", IBM Tech. Discl. Bul., vol. 22, No. 6, pp. 2191-2192, Nov. 79.
IBM Technical Disclosure Bulletin, vol. 27, No. 1A, Jun. 1984, pp. 109-114.

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