Patent ID: 7656136

Claim:
A digital boost converter comprising: an output stage for converting an input voltage to an output voltage; an error amplifier for generating an error signal from the output voltage and a reference voltage input thereto; an analog to digital converter for converting the error signal to a digital error signal; a compensator for determining an on-time period based on the digital error signal; and a digital pulse width modulator having an input coupled to the compensator for receipt of a signal therefrom corresponding to the on-time period, the digital pulse width modulator having another input for receiving a signal corresponding to a constant off-time period, the digital pulse width modulator generating a pulse width modulation signal based on the on-time period and the constant off-time period to drive the output stage; wherein the on-time period determines an on-time of the pulse width modulation signal, and the constant off-time period determines an off-time of the pulse width modulation signal.