Solid-state regulated voltage supply

Details Solid-state regulated voltage supply Solid-state regulated voltage supply

1979-02-02

1981-04-21

Pellinen, A. D.

Electricity: power supply or regulation systems

Self-regulating

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

G05F 148

Patent

active

RE0305863

ABSTRACT:
A solid-state (IC) regulated voltage supply compensated for effects of changes in temperature comprising first and second transistors operated at different current densities. Associated circuitry develops a voltage proportional to the .DELTA.V.sub.BE of the two transistors and having a positive temperature coefficient. This voltage is connected in series with the V.sub.BE voltage of one of the two transistors, having a negative temperature coefficient, to produce a resultant voltage with nearly zero temperature coefficient. A feedback circuit responsive to current flow through the two transistors automatically adjusts the base voltages to maintain a predetermined ratio of current density for the two transistors. Other embodiments provide higher-level DC outputs and compensation for base current flow.

REFERENCES:
patent: 3617859 (1971-11-01), Dobkin et al.
patent: 3754181 (1973-08-01), Kreitz et al.
Kuijk, "A Precision Reference Voltage Source", IEEE Journal of Solid State Circuits, vol. SC-8, No. 3, pp. 222-226, Jun. 1973.
Brokaw, "A Simple Three-Terminal IC Band Gap Reference", IEEE Journal of Solid State Circuits, vol. SC-9, No. 6, pp. 388-393, Dec. 1974.

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