Monitor PWM load current with a high-side current-sense amplifier

摘要

Accurate high-side current sensing is essential for automotive-control systems, such as those for EPS (electric power steering), automatic gear shifting, transmission control, engine fuel-injection control, braking-valve control, and active suspensions. All of these applications require precise regulation of the current through a motor or solenoid. The current sets the torque of the motor or the drive of the solenoid.