An audible noise reduction circuit adjusts either one of the reference voltage, the current sense voltage or the current sense resistor based on a detected switching frequency such that the controller maintains {HEAD ~ the switching frequency} above the audible frequency range in {TAIL ~ response} to an adjustment 
An audible noise reduction circuit adjusts either one of the reference voltage , the current sense voltage or the current sense resistor based on a detected switching frequency such that the controller maintains { HEAD ~ the switching frequency } above the audible frequency range in { TAIL ~ response } to an adjustment
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