Power system

Details Power system Power system

2005-12-06

2005-12-06

Patel, Rajnikant B. (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S285000

Reexamination Certificate

active

06972546

ABSTRACT:
A power system causes no variation in output voltage during switching from a linear regulator to a DC-DC converter. The power system switches off a drive circuit of a DC-DC converter and supplies voltage to a load from a linear regulator if the load is light, while the power system halts voltage supply to the load from the linear regulator and switches the drive circuit of the DC-DC converter on if the load is heavy. During a set period of time after the load changes from light to heavy, the linear regulator continues to supply voltage to the load while the DC-DC converter supplies a pseudo feedback signal to a control circuit in place of a feedback signal, with the drive circuit left off to control the time ratio at switching elements and, thus minimizing output voltage variations.

REFERENCES:
patent: 4293902 (1981-10-01), White
patent: 5146395 (1992-09-01), McKie
patent: 5396163 (1995-03-01), Nor et al.
patent: 5912552 (1999-06-01), Tateishi
patent: 6396252 (2002-05-01), Culpepper et al.
patent: 6833691 (2004-12-01), Chapuis
patent: 6853169 (2005-02-01), Burstein et al.
patent: 6914419 (2005-07-01), Katayama
patent: 2001-211640 (2001-08-01), None

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