The placement of the current sense resistor in conjunction with the switching regulator architecture determines what current is being sensed. Currents that are sensed include the peak inductor current, the valley inductor current (the minimum value of the inductor current when in continuous conduction mode) and the average output current. The location of the sense resistor affects power loss, noise calculations and the common mode voltage seen by the sense resistor monitoring circuitry.

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• Buck Regulator High Side Placement
• Buck Regulator Low Side Placement
• Buck Regulator Placement in Series with the Inductor