Patent ID: 7332886

Claim:
An integrated control and power driving system for a mass storage disk device comprising a spindle motor for rotating a disk, and a voice-coil motor (VCM) for moving an arm carrying a read/write head over a surface of the disk, the system comprising: a first chip comprising an interface for receiving digital control signals including three phase modulated digital signals, a spindle motor power stage for driving the spindle motor based on the three phase modulated digital signals, a VCM power stage for driving the voice-coil motor based on the digital control signals, and feedback circuitry coupled to said spindle and VCM power stages for generating feedback signals representing functioning conditions thereof, and providing the feedback signals to said interface; and a second chip comprising an interface for receiving the feedback signals from said first chip, and for providing the digital control signals to said first chip, and a pulse width modulator (PWM) converter for converting digital data into the three phase modulated digital signals for said VCM power stage based, on the feedback signals.