DIGITAL PWM CONTROLLER

摘要

A digital controller (408, 412, 416) for controlling the operation of a DC-DC switching converter is disclosed. A digital feedback control system is provided for receiving an analog input voltage (406) representing the output of the switching converter and digitally processing the analog input voltage by comparing it to a reference voltage and then determining analog drive signals to control the operation of the switching converter (402) to provide a regulated output. The digital feedback control system (408, 412, 416) operates in accordance with predetermined operating parametrics. The digital feedback control system (408, 412, 416) also has monitoring inputs and control inputs. A microcontroller (442) monitors the operation of the digital feedback control system and is able to change the operating parametrics under certain predetermined conditions.