Patent ID: 6693400
Filing Date: 2004-02-17
Classification: H02P

Abstract:
A multi-mode motor controller architecture comprising:a motor; a controller producing a voltage signal; a driver circuit in communication with the controller, the driver circuit comprising: an error amplifier receiving the voltage signal from the controller and producing an output; first and second output amplifiers for driving the motor using the output of the error amplifier; a sense amplifier producing an analog output indicating current through the motor; an analog-to-digital converter (ADC) coupled to the sense amplifier to receive the analog output of the sense amplifier and to output a digital output; a digital compensation mechanism coupled to the ADC and producing an output to the controller based on the ADC digital output, wherein the controller adjusts the voltage signal based on the digital compensation mechanism output; wherein the motor controller architecture is configurable to operate in a linear mode, a pulsed mode, or a switchable linear/pulsed mode.