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SENSEFET PRODUCTCurrent sensing power MOSFETs provide a highlyeffecTIve way of measuring load current in powercondiTIoning circuits. Conceptually simple in nature, thesedevices split load current into power and sensecomponents, and thereby allow signal level resistors to beused for sampling. Since this technique results in higherefficiency and lower costs than compeTIng alternaTIves,understanding how to use SENSEFET product is animportant design issue.Getting accustomed to these devices is relatively, but notcompletely, straightforward. They are conceptually simple,but have their own unique set of characteristics and subtleproperties. The following discussion examines both, andstarts with a description of how SENSEFET devices work.
