VOLTAGE CONVERTER AND ASSOCIATED OVER-VOLTAGE PROTECTION METHOD
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United States of America Patent
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Issued Date -
Mar 13, 2014
app pub date -
Sep 11, 2013
filing date -
Sep 11, 2012
priority date (Note) -
Abandoned
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Abstract
A voltage converter includes: an input terminal receiving an input voltage; an output terminal providing an output voltage; a switching circuit having a main switch configured to regulate the output voltage, wherein a control end of the main switch is configured to receive a Pulse Width Modulation (PWM) signal, and the output voltage is controlled according to the duty cycle of the PWM signal; and a protection switch coupled between the input terminal and the switching circuit, and wherein when the output voltage is higher than a reference voltage, the protection switch is turned OFF.
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