Precision two-stage integrated motor control

Abstract

Apparatus and associated methods relate to a motor driver package (MDP) for efficient control of an N phase motor system. In an illustrative example, the MDP may include N power transistors, a microcontroller unit (MCU), and a sensing circuit. For example, the MDP may be a unified physical package. The sensing circuit, for example, may include N sense field-effect-transistors (SENSEFET). Each of the SENSEFET is coupled to one of the N power transistors and is configured to generate a response corresponding to a drain output of the corresponding power transistor. In some implementations, in a high frequency mode, the MCU may generate N high frequency injection waveforms to each of the N power transistors. For example, the MCU may generate the N high frequency injection waveforms based on the response of each of the N phases. Various embodiments may advantageously provide an efficient solution for motor control applications.