Low-drop voltage regulator

Details Low-drop voltage regulator Low-drop voltage regulator

1992-09-08

1994-12-13

Voeltz, Emanuel T.

Electricity: power supply or regulation systems

Output level responsive

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

323351, G05F 156

Patent

active

053732251

ABSTRACT:
A low-drop voltage regulator includes a P-type power transistor having an input terminal connected to a supply source, an output terminal connected to a load, and a control terminal driven by the output of an operational amplifier having its non-inverting input connected to a reference voltage source and its inverting input connected to the output terminal of the power transistor. To improve the regulation characteristics of the regulator without jeopardizing stability, even under normally critical conditions, provision is made for a feedback network including a capacitive component between the output and inverting input of the operational amplifier.

REFERENCES:
patent: 4933826 (1990-06-01), Person
patent: 5038266 (1991-08-01), Callen et al.
EDN Electrical Design News, vol. 29, No. 10, May 1984, Boston, Mass., US, pp. 161-176, Glenn Fritz "Versatile Linear Regulator Eases Power-Supply Design".
EDN Electrical Design News, vol. 33, No. 20, Sep. 29, 1988, Newton, Mass., US, pp. 173-182, Steven C. Hageman, "Spice Techniques Facilitate Analysis of Feedback Circuits".
Millman & Halkias, "Integrated Electronics" 1971, McGraw-Hill, Tokyo, Japan.

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