STEP-DOWN SWITCHING MODE POWER SUPPLY AND THE METHOD THEREOF
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United States of America Patent
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Issued Date -
Jun 12, 2014
app pub date -
Dec 10, 2013
filing date -
Dec 10, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A step-down switching mode power supply having: a Buck converter configured to provide power to a load, wherein the Buck converter has a power switch and an energy storage component; a current sense circuit coupled to the power switch to generate a current sense signal; a square circuit configured to generate a first multiply signal indicating the squared value of the input voltage; a multiply circuit configured to generate a product signal based on the first multiply signal and a second multiply signal; a current comparison circuit configured to generate a current comparison signal based on the current sense signal and the product signal; and a logic circuit configured to control the power switch.
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