Six-port isolated error amplifier and isolated power supply

By using the detection, modulation, and recovery circuit of a six-port isolation error amplifier, a linear positive correlation between the input current and the output current is achieved. This replaces the optocoupler for isolation feedback, solving the problems of low transmission rate, low bandwidth, and short lifespan, and adapting to the increasing integration requirements of electronic systems.

CN122178845APending Publication Date: 2026-06-09BEIJING GL MICROELECTRONICS TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING GL MICROELECTRONICS TECHNOLOGY CO LTD
Filing Date
2026-02-13
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing optical couplers suffer from problems such as low transmission rate, low transmission signal bandwidth, easy aging, and short lifespan in isolated feedback scenarios, and cannot meet the requirements of the ever-increasing integration of current electronic systems.

Method used

A six-port isolation error amplifier is used, including a detection circuit, a pulse width modulation circuit, an encoding/modulation circuit, a coupling transmission circuit, a decoding/demodulation circuit, and a recovery circuit. Isolation transmission is achieved by detecting the linear positive correlation between voltage and current, and isolation feedback is achieved by replacing the optocoupler.

Benefits of technology

It achieves a linear positive correlation between input current and output current, solves the problems of low transmission rate, low bandwidth and short lifespan caused by optocouplers, and provides a more efficient isolation feedback scheme.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122178845A_ABST
    Figure CN122178845A_ABST
Patent Text Reader

Abstract

This disclosure provides a six-port isolation error amplifier and isolation power supply, including a detection circuit, a pulse width modulation circuit, an encoding / modulation circuit, a coupling transmission circuit, a decoding / demodulation circuit, a recovery circuit, and an open-drain (OD) gate. The detection circuit detects the input voltage and outputs a detection voltage and a detection current positively correlated with the input current. The pulse width modulation circuit generates a first pulse width modulation signal based on the detection voltage. The encoding / modulation circuit converts the first pulse width modulation signal into a transmission signal. The coupling transmission circuit couples and transmits the transmission signal. The decoding / demodulation circuit receives the transmitted coupled signal and recovers the transmitted coupled signal into a second pulse width modulation signal. The recovery circuit recovers the second pulse width modulation signal into a DC voltage positively correlated with the duty cycle of the second pulse width modulation signal. The OD gate converts the DC voltage into an output current positively correlated with the input current. It can replace the optocoupler in the isolation feedback scenario 1:1.
Need to check novelty before this filing date? Find Prior Art