Voltage regulator having bias current control circuit

Details Voltage regulator having bias current control circuit Voltage regulator having bias current control circuit

1991-08-19

1992-07-14

Miller, Stanley D.

Electricity: power supply or regulation systems

Output level responsive

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

3072966, 3072968, G05F 140, H03K 301

Patent

active

051306352

ABSTRACT:
This invention relates to a bias current control circuit which drives a power MOS transistor. Since the power MOS transistor has a large capacitance which is formed between a gate and a channel, it is needed to provide a circuit which is able to sufficiently supply a drive current to the gate. Such a circuit increases a consumption current because the circuit has to always flow the current to drive the gate. This invention provides a circuit which cut the consumption current in the circuit when the transistor is not driven, and increases a consumption current in the circuit in order to keep a gate current when the transistor is driven.

REFERENCES:
patent: 4251743 (1981-02-01), Hareyama
patent: 4393346 (1983-07-01), Jones
patent: 4933625 (1990-06-01), Hayakawa
patent: 4952863 (1990-08-01), Sartwell et al.
patent: 4983905 (1991-01-01), Sano et al.
patent: 5061863 (1991-10-01), Mori et al.
patent: 5087891 (1992-02-01), Cytera

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