Link regulator with feed forward switching control

Details Link regulator with feed forward switching control Link regulator with feed forward switching control

1982-02-04

1984-07-03

Smith, Jr., David

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

318723, 323204, G05F 146

Patent

active

044581998

ABSTRACT:
A link regulator is disclosed for providing a regulated voltage over a wide range of input frequencies and load currents. The frequency of an internal VCO and the input frequency are phase compared to provide a reference error signal. The unregulated DC voltage is integrated for a duration proportional to the error signal. This duration controls a series switching element to provide a constant volts/seconds. The output of the series switching element is filtered to a DC voltage that controls the frequency of the VCO. The DC voltage is proportional to the error signal, thus providing a feed forward system to regulate the DC voltage. During the period when the series switching element is not conducting, a shunt switch presents a low impedance to the input of the filter to clamp the input to ground. This allows for operation over a wide range of load currents without losing regulation.

REFERENCES:
patent: 3593103 (1971-07-01), Chandler
patent: 3886430 (1975-05-01), Meier
patent: 3886431 (1975-05-01), Meier
patent: 4048554 (1977-09-01), Stich
patent: 4230979 (1980-10-01), Espelage et al.

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