A parallel connection current sharing circuit

CN224319247UActive Publication Date: 2026-06-02MORNSUN GUANGZHOU SCI & TECH
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MORNSUN GUANGZHOU SCI & TECH
Filing Date
2025-04-25
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing parallel current sharing technology for switching power supplies, the forward voltage drop of the diode affects the gain regulation capability of the current error proportional amplifier, resulting in unstable output voltage regulation under different temperature environments, which cannot meet the requirements of redundancy backup and flexible capacity expansion.

Method used

A new anti-backflow circuit is constructed by using a first operational amplifier and a first diode to replace the original diode, eliminating the forward voltage drop of the diode, and adjusting the output current through a current error proportional amplifier circuit and a voltage error amplifier to achieve the anti-backflow function.

Benefits of technology

The power supply system can stably adjust the output current under different temperature conditions, enabling redundant backup and flexible expansion, and ensuring stable and reliable operation of the power supply system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224319247U_ABST
    Figure CN224319247U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of parallel machine current sharing circuits, circuit includes current sampling circuit, voltage following circuit, current error proportional amplification circuit, anti-backflow circuit and voltage error amplifier;The output end of the current sampling circuit is sequentially passed through the voltage following circuit, the current error proportional amplification circuit and the anti-backflow circuit and is further connected to the input end of the voltage error amplifier;The anti-backflow circuit includes first operational amplifier, first diode and first resistance, the output end of the first operational amplifier is connected to the anode of the first diode, and the cathode of the first diode is respectively connected to the first end of the first resistance and the inverting input end of the first operational amplifier.The utility model replaces original diode by using first operational amplifier and first diode to constitute new anti-backflow circuit, to realize the function of anti-backflow while eliminating the inherent forward conduction voltage drop of diode.
Need to check novelty before this filing date? Find Prior Art