23.3 A 51A Hybrid Magnetic Current Sensor with a Dual Differential DC Servo Loop and 43mA_rmsResolution in a 5MHz Bandwidth

Magnetic current sensors are widely used in applications where galvanic isolation and wide bandwidth (BW) are desired, such as in switched-mode power supplies and motor drivers. By using Hall plates for low frequencies and pick-up coils for high frequencies, hybrid magnetic sensors can achieve high resolution (tens of textmA) over a wide...