Patent ID: 6989955
Filing Date: 2006-01-24
Classification: G11B

Abstract:
1. A multiple-mode driver circuit, comprising: pulse-width-modulation circuitry, for generating first and second pulse-width modulated signals; a first driver pair comprising first and second transistors having conduction paths connected in series between a power supply voltage and a ground voltage, and defining a first phase node at the connection between the conduction paths of the first and second transistors, each of the first and second transistors having a control terminal; a first pulse-width-modulation driver, having an input and having outputs coupled to the control terminals of the first and second transistors; a first comparator, having a first input coupled to the first phase node, and having a second input for receiving a reference voltage; and a first multiplexer, having a first input coupled to receive the first pulse-width modulated signal, having a second input coupled to receive an output of the first comparator, having a control input, and having an output coupled to the input of the first pulse-width-modulation driver.