Switching power supply device having pulse-by-pulse type overcurrent protection function
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United States of America Patent
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Jan 30, 2018
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app pub date -
Dec 16, 2016
filing date -
Dec 25, 2015
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Abstract
A switching power supply device includes: a switching output circuit configured to generate an output voltage from an input voltage; an oscillation circuit configured to generate a clock signal; a control circuit configured to control driving of the switching output circuit in synchronization with the clock signal; a pulse-by-pulse type overcurrent protection circuit configured to detect an overcurrent flowing through the switching output circuit to generate an overcurrent protection signal for forcibly stopping a switching operation of the switching output circuit; and a pulse skip circuit configured to perform a pulse skip operation of the clock signal in response to the overcurrent protection signal.
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