Integriertes Antriebssystem für Pulsbreitenmodulation in Strombetriebsart

摘要

In a current mode, PWM integrated drive system of an external load (VCM) a switched-capacitor amplifier with a Sample & Hold stage connected in cascade thereto as the current sensing amplifier of the control loop, overcomes the criticality of inevitable resistive mismatchings, thus permitting a scaling down of the integrated drive system while preserving a high precision.