Variable voltage driver circuit using current detector

Details Variable voltage driver circuit using current detector Variable voltage driver circuit using current detector

1998-11-27

2000-09-05

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327538, G05F 302

Patent

active

061148997

ABSTRACT:
A variable voltage driver circuit using a current detector is disclosed. The circuit includes a voltage generator, a voltage detector for detecting an output voltage of the voltage generator, a delay unit connected with the voltage detector for feeding back a signal to the voltage generator, a pulse generator for receiving a signal from the voltage generator and generating a pulse, a current-pulse generator for detecting a current in accordance with a signal from the pulse generator, a voltage drop detector for detecting a voltage dropped in the signal from the current-pulse generator, a latch for storing a signal from the voltage drop detector, and an extra-voltage driver for supplying a current in accordance with a latch signal when the current is small. In the present invention, when a normal voltage is generated by the voltage generator, the current supplied from the driver is measured. As a result of the measurement, if the current is small, the current is supplied by driving the extra-voltage driver.

REFERENCES:
patent: 4837457 (1989-06-01), Bergstrom et al.
patent: 5430682 (1995-07-01), Ishikawa et al.
patent: 5499209 (1996-03-01), Oowaki et al.

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