Power circuit for a semiconductor apparatus

Details Power circuit for a semiconductor apparatus Power circuit for a semiconductor apparatus

1992-04-08

1995-06-13

Stephan, Steven L.

Electricity: power supply or regulation systems

External or operator controlled

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

323303, 327538, G05F 508

Patent

active

054246296

ABSTRACT:
A power circuit for a semiconductor apparatus comprising an internal power voltage generating circuit generating an internal power voltage, an external power voltage detecting circuit, a power voltage switching circuit switching the internal power voltage to the external power voltage in response to the output of the external power voltage detecting circuit, and a switching signal setting circuit. The output of the power voltage switching circuit is the internal power voltage when power is first applied to the semiconductor device. The switching signal setting circuit provides the correct power voltage switching signals quickly to the power voltage switching circuit when power is applied and the external power voltage is not inputted to the apparatus at the early stage of power application.

REFERENCES:
patent: 4859871 (1989-08-01), Kobayashi et al.

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