Abstract: A digital controller for a switching converter configured to receive an input voltage and to generate an output voltage, the switching converter comprising one or more power switches and an energy storage element, the digital controller being configured to receive a digitized current signal, the digitized current signal being a digital representation of a current flow through the energy storage element, generate a filtered digital current error signal using the digitized current signal and a ripple cancellation signal, the ripple cancellation signal being arranged to reduce ripple from the digital current signal in the generation of the filtered digital current error signal, and control the switching converter, the control of the switching converter being dependent on the filtered digital current error signal.

Abstract: A digital controller for a switching converter configured to receive an input voltage at an input voltage node and to generate an output voltage at an output voltage node, the switching converter comprising one or more power switches and an energy storage element, the digital controller comprising a pulse width modulation control circuit configured to receive the output voltage and to generate a PWM control signal to control the switching operation of the one or more power switches, and switching circuitry configured to couple the pulse width modulation control circuit to the input voltage node during a first phase, and couple the pulse width modulation control circuit to a supply voltage node during a second phase, the supply voltage node being at a supply voltage.

Abstract: A digital controller for a switching converter configured to receive an input voltage and to generate an output voltage, the switching converter comprising one or more power switches and an energy storage element, the digital controller comprising a ripple cancellation signal generator configured to generate a ripple cancellation signal, the digital controller being configured to receive a digitized current signal, the digitized current signal being a digital representation of a current flow through the energy storage element, generate a filtered digital current error signal using the digitized current signal and the ripple cancellation signal, the ripple cancellation signal being arranged to reduce ripple from the digitized current signal in the generation of the filtered digital current error signal, and control the switching converter, the control of the switching converter being dependent on the filtered digital current error signal, wherein the ripple cancellation signal, within each signal period, compr