CMOS on-board voltage regulator

(19)

(11)

EP 0 651 309 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.07.1997 Bulletin 1997/29

(43)	Date of publication A2:
	03.05.1995 Bulletin 1995/18

(21)	Application number: 94114202.8

(22)	Date of filing: 09.09.1994

(51)	International Patent Classification (IPC)⁶: G05F 1/56

(84)	Designated Contracting States:
	DE FR GB

(30)

Priority:

28.10.1993 US 142035

(71)	Applicant: ROCKWELL INTERNATIONAL CORPORATION
	Seal Beach California 90740 (US)

(72)	Inventors:
	Gupta, Rajiv (NMI) Brea, California 92621 (US) Spence, John R. Villa Park, California 92667 (US) Zhang, Ming Ming Irvine, California 29715 (US)

(74)	Representative: Wagner, Karl H., Dipl.-Ing. et al
	WAGNER & GEYER Patentanwälte Gewürzmühlstrasse 5 80538 München 80538 München (DE)

(54)	CMOS on-board voltage regulator

(57) A voltage regulator for regulating the voltage at a predetermined node connected to the core of a semiconductor device comprising reference voltage means for generating a reference voltage, an op-amp having said reference voltage as its reference input and the voltage at said predetermined node as its another input for adjusting the node voltage to match said reference voltage, series dropping means for supplying current load to the core, and filter capacitor coupled to said series dropping means for supplying transient current to said predetermined node.

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