Patent ID: 6021015
Filing Date: 2000-02-01
Classification: G11B

Abstract:
A method for driving hard disk drive spindle and actuator motors, comprising the steps of:generating actuator motor control signals at an actuator control circuit formed on a first substrate;generating spindle motor control signals at a spindle control circuit formed on the first substrate;receiving the actuator motor control signals at an actuator power circuit formed on a second substrate, and generating actuator motor power signals; andreceiving the spindle motor control signals at a spindle power circuit formed on the second substrate, and generating spindle motor power signals;wherein the step of generating the actuator motor control signals further comprises the steps of:sensing at a current meter a current conducted by the actuator motor and generating a sense output signal;receiving at an error amplifier a linear current command signal and the sense output signal, and generating an amplified error signal; andreceiving at an actuator motor predrive amplifier the amplified error signal, and generating the actuator motor control signals.