POWER SUPPLY APPARATUS WITH POWER BACKUP MECHANISM
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United States of America Patent
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Issued Date -
Mar 20, 2014
app pub date -
Sep 17, 2013
filing date -
Sep 17, 2012
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Abstract
A power supply apparatus is provided. The provided power supply apparatus has a power backup mechanism, in which a main DC power and a backup DC power are switched by a fast switching circuit composed of a plurality of switch transistors. Since the switching time of each switch transistor is substantially shorter than that of the conventional relay, the backup DC power can be conducted to the input of the multi-output DC-DC converter at a quite-short time even though the main DC power is abnormal. Accordingly, the output of the multi-output DC-DC converter still can continuously and stably supply the operation power required by the load.
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