PROTOCOL FOR COMMUNICATION BETWEEN SECONDARY SIDE AND PRIMARY SIDE OF ISOLATED SWITCHING POWER CONVERTERS

摘要

A power converter system comprises a switching power converter having a primary side and a secondary side that are electrically isolated from each other. A first controller on the primary side of the switching power converter controls a switch in the switching power converter on or off at a switching frequency of the switching power converter to regulate an output voltage of the switching power converter. A second controller on the secondary side of the switching power converter encodes information into one or more pulses such that a first duration between the consecutive pulses corresponds to a first logic level and a second duration between the consecutive pulses corresponds to a second logic level, the second duration being greater than the first duration.

主权项

1. A power converter system, comprising:
a switching power converter having a primary side and a secondary side that are electrically isolated from each other; a first controller on the primary side of the switching power converter, the first controller controlling a switch in the switching power converter on or off at a switching frequency of the switching power converter to regulate an output voltage of the switching power converter; a second controller on the secondary side of the switching power converter, the second controller encoding information into one or more pulses such that a first duration between consecutive ones of the pulses corresponds to a first logic level and a second duration between consecutive ones of the pulses corresponds to a second logic level, the second duration being greater than the first duration; and a communication channel for transmitting the encoded information from the second controller to the first controller while maintaining electrical isolation between the primary side and the secondary side.