Power supply circuit including stably operating voltage regulators
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United States of America Patent
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Sep 18, 2007
Grant Date -
Nov 18, 2004
app pub date -
May 11, 2004
filing date -
May 13, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A power supply circuit is constructed by a step-up circuit for receiving an input DC voltage to generate a plurality of output DC voltages, and a plurality of voltage regulators, each powered by two voltages selected from a combination of the output DC voltages and the ground voltage. The difference between the two voltages of each of the voltage regulators are substantially the same, to stably operate the voltage regulators.
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