| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved technology for driving a voice coil motor (VCM) load in a disc drive system, or the like. SOLUTION: A VCM power driver has an input end receiving an external supply voltage VDD. A voltage mode driver is coupled with a power supply voltage and generates a drive signal to a load. A system processor generates a command indicative of a desired programmed voltage output from the voltage mode driver. A comparator compares the VDD with a reference voltage to generate an error signal. A combination mechanism generates a corrected command using the error signal. The corrected command is coupled with the voltage mode driver which generates a voltage output based on the corrected command. |
