CONTROL CIRCUIT AND SWITCHING POWER SUPPLY UNIT
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United States of America Patent
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Feb 7, 2017
Grant Date -
Mar 2, 2017
app pub date -
Mar 4, 2016
filing date -
Aug 28, 2015
priority date (Note) -
Granted
status (Latency Note)
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Abstract
A control circuit controls a switching element in a switching power supply unit. The control circuit includes: a controller connected to the switching element; a signal generating circuit connected to the input part of the controller; a reference voltage source connected to the signal generating circuit; and a comparator having a first input terminal to which an output voltage is input from the switching power supply unit, a second input terminal to which a comparison signal is input from the signal generating circuit, and an output terminal connected to the signal generating circuit and to the input part of the controller.
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