Inductor shunt, output voltage regulation system for a power supply
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United States of America Patent
Stats
-
Dec 24, 1991
Grant Date -
N/A
app pub date -
Apr 5, 1990
filing date -
Apr 5, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
High efficiency, post regulation of auxiliary outputs in multiple output-power supplies is provided by connecting a regulating switching device in parallel with a filter inductor connected in the current path from the rectifiers to the output terminal. For minimum output power for that auxiliary output, the switching device is held off at all times. When increased power is required, the switching device is turned on for a short period during each cycle of the inductor voltage. The switching system may be configured to conduct current from the output end of the inductor to the input end of the inductor or vice versa or either one selectively, in accordance with the particular regulation scheme chosen. Efficiency is maximized since current flows in the switching device for only a small portion of the cycle of the inductor voltage.
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