Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent
1991-05-06
1993-03-09
Beha, Jr, William H.
Electric power conversion systems
Phase conversion without intermediate conversion to d.c.
By dynamoelectric machine converter
363 60, 365226, 365227, H03K 301, H02M 307
Patent
active
051931982
ABSTRACT:
A battery-powered electronic system in which ICs of low and high voltage specifications can be operated simultaneously by a single low voltage power supply, wherein prolongation of battery life, miniaturization of the housing size and reduction of manufacturing costs are achieved. The present invention comprises a monolithically integrated charge pump circuit for boosting a power supply voltage so as to output a voltage greater than that of the power supply voltage, and a power supply multiplexor for selecting between the output of the charge pump circuit and the power supply voltage in accordance with a power supply select control signal. The output of the multiplexor is used as a supply voltage, for at least one other IC in the system. The voltage selection process is dynamically determined based on the time-varying requirements of system operation. A voltage regulation circuit may be used to provide control over the charge pump circuit output. Circuitry is disclosed for disabling charge pump operation, when such operation is unnecessary, to reduce power consumption.
REFERENCES:
patent: 3757795 (1973-09-01), Anderson
patent: 3941989 (1976-03-01), McLaughlin et al.
patent: 3980935 (1976-09-01), Worst
patent: 4236199 (1980-11-01), Stewart
patent: 4565960 (1986-01-01), Takata et al.
patent: 4794317 (1988-12-01), van Tran
patent: 4806789 (1989-02-01), Sakihama et al.
patent: 4875188 (1989-10-01), Jungroth
patent: 4890051 (1989-12-01), Kim et al.
patent: 4990847 (1991-02-01), Ishimaru et al.
patent: 5012132 (1991-04-01), Wang
Owen, "Voltage Generator for EPROMs", Electronic Product Design (G.B.) p. 28, Oct. 1981.
Beha, Jr William H.
Seiko Epson Corporation
Werner Raymond J.
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