Check patentability & draft patents in minutes with Patsnap Eureka AI!

Peak current control device, current compensation circuit and switching power supply

A technology of peak current control and current compensation circuit, which is applied in the direction of control/regulation system, output power conversion device, electrical components, etc. It can solve the problem of unable to stabilize the peak current of power tube, unable to eliminate system response delay, and design value is too large And other issues

Inactive Publication Date: 2017-08-04
SHENZHEN TITAN MICRO ELECTRONICS
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional current-limiting control mode cannot eliminate the influence of system response delay, resulting in the fact that when the power tube is turned off, the sampling signal is usually higher than the reference threshold by a certain amount of overshoot, that is, the peak current when the power tube is turned on each time will be larger than the design value, unable to stabilize the peak current of the power tube

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
  • Peak current control device, current compensation circuit and switching power supply
  • Peak current control device, current compensation circuit and switching power supply
  • Peak current control device, current compensation circuit and switching power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention 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.

[0022] The current-limiting control mode is a way to control the power switch tube in the switching power supply. It samples the current flowing through the power switch tube and compares it with the internal reference threshold, and turns off the power switch tube when the current exceeds the peak current. Thereby controlling the peak current when the switch tube of the power tube is turned on. The traditional current-limiting control mode directly samples the output current of the power switch tube and converts it into a sampled voltage, and then inputs the sampled voltage into a comparator for c...

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 relates to a peak current control device, a current compensation circuit thereof, and a switching power supply. A current compensation circuit is used to compensate the sampling current in the peak current control circuit in the switching power supply to eliminate the sampling error caused by the system delay; the current compensation circuit includes a first current compensation module and a conversion module. The first current compensation module determines the conduction duration of the power switch tube according to the output voltage of the control unit of the peak current control circuit in the switching power supply, and outputs the first compensation current according to the conduction duration. The first compensation current decreases with the increase of the conduction time. The conversion module converts the first compensation current into a compensation voltage, sums it with the sampling voltage, and outputs it to the control unit as a pre-determined value. The current compensation circuit adjusts the overshoot in the peak current control circuit according to the input voltage of the power switch tube of the switching power supply to eliminate the system error caused by the system delay, thereby realizing the stable peak current of the power switch tube.

Description

technical field [0001] The invention relates to the technical field of switching power supplies, in particular to a peak current control device, a current compensation circuit thereof, and a switching power supply. Background technique [0002] The current-limiting control mode is a way to control the power tube in the switching power supply. It samples the power tube current and compares it with the internal reference threshold to control the peak current when the power tube is turned on. The traditional current-limiting control mode cannot eliminate the influence of system response delay, resulting in the fact that when the power tube is turned off, the sampling signal is usually higher than the reference threshold by a certain amount of overshoot, that is, the peak current when the power tube is turned on each time All will be larger than the design value, and the peak current of the power tube cannot be stabilized. Contents of the invention [0003] Based on this, it ...

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
IPC IPC(8): H02M1/08G05F1/565
CPCH02M1/08G05F1/565
Inventor 陈嘉为冯根强张伟门洪达梁福喜唐锦华
Owner SHENZHEN TITAN MICRO ELECTRONICS
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com