Power supply device sensing AC-off state
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United States of America Patent
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Feb 6, 2018
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N/A
app pub date -
Apr 22, 2014
filing date -
Jun 28, 2013
priority date (Note) -
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Abstract
There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a transformer configured to supply output voltage by converting voltage of the DC power rectified by the rectifier, and a Pulse Width Modulation (PWM) control module configured to output voltage by switching a power switching device connected to the transformer, configured to drive the power supply device by connecting power of an HV pin to a VCC pin, and configured to determine an AC-off state by sensing voltage rectified by the rectifier.
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