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Switch Mode Power Supply Current Sensing - Part 3: Current Sensing Methods

Henry Zhang - Applications Engineering Manager
Kevin B. Scott - Senior Strategic Marketing Engineer Nov 22nd 2016
The three commonly employed current sensing methods for switch mode power supplies are: are using a sense resistor, using the MOSFET RDS(ON) and using the DC resistance (DCR) of the inductor. Each method offers advantages and disadvantages that should be considered when selecting one method over another.  Sense Resistor ...