Voltage regulating circuitry for a DC to DC converter

Details Voltage regulating circuitry for a DC to DC converter Voltage regulating circuitry for a DC to DC converter

1987-06-23

1988-06-28

Salce, Patrick R.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

320 21, 315241P, 3541451, H02M 324, H05B 4126

Patent

active

047543892

ABSTRACT:
Voltage regulating circuitry maintains a load voltage of a DC to DC converter within a prescribed range. For that purpose, an SCR latching switch is connected to conduct upon the load voltage increasing to a predetermined upper level, and to become non-conductive in response to the load voltage decaying from the upper level to a predetermined lower level. Bistable switching circuitry, connected to an output of the SCR switch, serves as a current source in response to the SCR conducting, and as a current sink in response to the SCR latch becoming non-conductive. The bistable circuitry provides "snap action" control of an output transistor, which is coupled to the converter, when its load voltage rises and falls, respectively, to the upper and lower levels of the prescribed range, so that the voltage regulating circuitry has a stable, well defined hysteresis.

REFERENCES:
patent: 3863128 (1975-01-01), Wilwerding
patent: 4005337 (1977-01-01), Rabe
patent: 4034278 (1977-07-01), Gahler et al.
patent: 4068151 (1978-01-01), Harrison
patent: 4071884 (1978-01-01), Maigret
patent: 4082983 (1978-04-01), Adams, Jr.
patent: 4128786 (1978-12-01), Vital et al.
patent: 4298827 (1981-11-01), Nakajima
patent: 4374345 (1983-02-01), Takayama

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