Reference voltage source

Details Reference voltage source Reference voltage source

1982-11-01

1984-07-03

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323350, 307297, G05F 308, G05F 146

Patent

active

044582005

ABSTRACT:
Band gap voltage regulator employing a self-balancing bridge circuit for controlling current flow through two parallel branches. Voltage points in each branch are alternately sampled and applied to one input of a comparator in a delta modulator circuit. The output of the delta modulator circuit is applied to the other input of the comparator. The output of the comparator is applied to a control circuit which controls a current source in each of the two branches. The voltages at each voltage point are alternately compared with the voltage at the other input of the comparator, and the result is employed to control the current sources so that the voltages at both points are equalized despite any offset voltage in the comparator.

REFERENCES:
patent: 3887863 (1975-06-01), Brokaw
patent: 4100436 (1978-07-01), van de Plassche
patent: 4185236 (1980-01-01), van de Plassche et al.
patent: 4251743 (1981-02-01), Hareyama
patent: 4327320 (1982-04-01), Oguey et al.
patent: 4339707 (1982-07-01), Gorecki
Widlar, R. J., "New Developments in IC Voltage Regulator," Linear Circuit Techniques, Digest of Technical Papers, 1970 IEEE International Solid State Circuits Conference, Feb. 20, 1970, pp. 158-159.
Kash, R., "Building Qualty Analog Circuits with C-MOS Logic Arrays", Electronics, Aug. 11, 1981, pp. 109-112.

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