Precision two-stage integrated motor control

A motor driver package comprising:

• a gate driver circuit comprising N phases, wherein N is an integer larger or equal to 1, and each i-th phase (1<=i<=N) of the N phases comprises a corresponding power transistor (Pi) comprising a gate terminal and a drain terminal, wherein Pi is configured to generate a motor control signal at the drain terminal for the i-th phase;
• a logic control circuit coupled to the gate driver circuit, comprises:
• a microcontroller unit comprising;
• a processor, a memory module comprising a program of instructions, and a signal modulation engine wherein the microcontroller unit is configured to execute the signal modulation engine to generate N control waveforms, W1, W2, . . . , Wi, . . . WN, wherein Wi corresponds to the i-th phase and is received by the gate terminal of the Pi;
• and,
• a low loss high frequency sensing circuit coupled to the logic control circuit, wherein the low loss high frequency sensing circuit comprises, for each of the Pi, a sense field-effect transistor (SENSEFET) Si, wherein the Si comprises:
• a source terminal connected to the drain terminal of Pi;
• a gate terminal coupled to the logic control circuit, wherein a signal received at the gate terminal is synchronously related to the signal received at the gate terminal of Pi;
• and,
• in operation, the low loss high frequency sensing circuit is configured to generate a sensing output comprising a plurality of current sensing outputs, each corresponds to a current output of a sense terminal of the SENSEFET of each of the N phases, wherein the current output of the sense terminal of Si is a positive fraction of a current input at the source terminal of Si, wherein:
• the logic control circuit is configured to determine a phase information as a function of the sensing output in a high frequency signal injection mode;
• the signal modulation engine is configured to generate the N control waveforms as a function of the phase information;
• and,
• the logic control circuit, the gate driver circuit, and the low loss high frequency sensing circuit are integrated within a unified physical package.