1 results about "Pwm converter" patented technology

The application provides an AC-DC converter and a controller thereof, and relates to the technical field of AC-DC converters. The controller for the AC-DC converter comprises a rectifier circuit for converting an AC input voltage into a DC output voltage, and the controller uses control logic to control the rectifier circuit according to two or more operating modes. Each operating mode of the rectifier circuit has a voltage gain, and each operating mode determines the gain of the rectifier circuit. The controller selects one operating mode from the two or more operating modes based on at least one of an AC input voltage value and a required DC output voltage value. The AC-DC converter provides a wide range of DC output voltage and power factor correction. The controller can be used with AC-DC converter topologies such as boost converters, isolated boost converters, PWM converters, LLC resonant converters and LCC resonant converters. Through the controller, the AC-DC converter can achieve optimal performance within a wide voltage variation range.