Patent ID: 8868893

Claim:
An integrated circuit comprising: a first circuit comprising a Configurable Switching Power Supply Pulse Width Modulator (CSPSPWM) operable as a step down converter controller and as a flyback converter controller, a driver output terminal, a driver coupled to receive a driver input signal from the CSPSPWM and coupled to drive a driver output signal onto the driver output terminal, a supply voltage terminal couplable to an error amplifier of the CSPSPWM, and a configuration register, wherein configuration information stored in the configuration register determines a configuration of the CSPSPWM; a memory; and a processor adapted to access the memory and to execute instructions stored in the memory, wherein the processor is powered substantially entirely by power received from the first circuit as a result of an operation of the CSPSPWM, wherein the processor is configured to write to the configuration register in the first circuit thereby configuring the CSPSPWM.