Unlock instant, AI-driven research and patent intelligence for your innovation.

A Feedback Circuit for Switching Power Supply

A technology of switching power supply and feedback circuit, applied in the field of feedback circuit, can solve the problems of increasing the complexity of the system, increasing the MCU, increasing the cost, etc., and achieving the effects of low cost, reduced complexity and simple circuit

Active Publication Date: 2019-10-11
XIAMEN CITY KELI ELECTRONICS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing non-linear voltage regulation method adopts the MCU control method to achieve this goal. However, the MCU control method requires programming, which increases the complexity of the system on the one hand, and increases the cost on the other hand.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Feedback Circuit for Switching Power Supply
  • A Feedback Circuit for Switching Power Supply
  • A Feedback Circuit for Switching Power Supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035]In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] The present invention provides a feedback circuit for switching power supply as attached figure 1 As shown, it includes a first feedback branch 100, a second feedback branch 200, a third feedback branch 300, a PID adjustment circuit 07, and an isolation circuit 08;

[0037] The input end of the first feedback branch 100 and the input end of the second feedback branch 200 are respectively connected to the PWM signal (PWM_DA), and the input end of the third feedback branch 300 is connected to the output end of the switching power supply Vo; the PWM...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a feedback circuit for a switching power supply, comprising a first feedback branch (100), a second feedback branch (200), a third feedback branch (300), a PID adjustment circuit (07), an isolation Circuit (08); the feedback circuit for switching power supply of the present invention has the characteristics of simple circuit and low cost, and it can adjust the voltage in sections according to different applications of the output, without MCU programming, which reduces the complexity of the system Accuracy, improving system stability and other characteristics have very good practical significance in some special applications.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a feedback circuit for a switching power supply. Background technique [0002] Due to the advantages of small size, light weight and high efficiency, switching power supply has been more and more widely used. Most switching power supplies use optocoupler isolation: relying on the linear working area of ​​the optocoupler, the output voltage error signal is isolated and fed back to the primary controller for pulse width adjustment, thereby realizing the overall power supply voltage regulation control. At present, the voltage regulation used by the switching power supply adopts the linear voltage regulation method, which can only be in a monotonic linear relationship, but the voltage required in some occasions is nonlinear, and some systems require it. The existing non-linear voltage regulation method uses the MCU control method to achieve this goal. However, the MCU control me...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/04
CPCH02M7/04H02M1/0025
Inventor 翁贵聪李俊需伍佼张志伟王其才徐进远
Owner XIAMEN CITY KELI ELECTRONICS