Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A control method, control circuit and switching power supply for improving load dynamic response

A dynamic response and control circuit technology, applied in the direction of control/regulation system, electrical components, and adjustment of electrical variables, can solve the problems of long switching cycle, unadjustable output voltage, output voltage drop, etc., and achieve good effect and dynamic response speed fast effect

Active Publication Date: 2017-01-04
SILERGY SEMICON TECH (HANGZHOU) CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, for a system with a light load running at a lower operating frequency, the switching cycle is very long, and the output voltage cannot be adjusted before the next switching cycle, so the output voltage will drop a lot when the load is switched. , resulting in poor dynamic performance of the system

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 control method, control circuit and switching power supply for improving load dynamic response
  • A control method, control circuit and switching power supply for improving load dynamic response
  • A control method, control circuit and switching power supply for improving load dynamic response

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0042] refer to figure 2 , shows a circuit diagram of an embodiment of a control circuit for improving load dynamic response according to the present invention; the control circuit is applied to an isolated converter, and in this embodiment, the isolated converter uses a flyback type converter as an example, but not limited thereto, the...

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 control method, a control circuit and a switching power supply for improving the dynamic response of a load. Through the design of a voltage feedback circuit, within a working cycle, the maximum value of the output voltage drop under dynamic load and the output sampled in the cycle The voltage value is related, that is, the voltage reference signal is set to be proportional to the output voltage, and the detected output voltage is compared with the voltage reference signal in the time period before the arrival of the next working cycle to determine the change of the secondary output voltage. Therefore, the response speed of the system can be greatly accelerated, and the stability of the output voltage can be maintained, so that the dynamic performance of the system can be better improved.

Description

technical field [0001] The invention relates to the field of switching power supplies, more specifically, to a control method for improving load dynamic response, a control circuit and a switching power supply. Background technique [0002] Primary-side controlled switching power supplies such as flyback converters have the characteristics of simple circuit, good safety and good stability. The adapter field is widely used. [0003] In the prior art, the detection of the output voltage of the secondary side in the primary side control system is realized indirectly by detecting the voltage of the secondary winding of the transformer. Due to the delay of the circuit, the primary side controller does not perform real-time detection of the output voltage. Instead, the voltage of the auxiliary winding is sampled in each switching cycle to obtain the detection of the output voltage, such as figure 1 Shown is a circuit diagram of a primary side feedback control method in the prior...

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): H02M3/335
Inventor 张少斌白永江胡志亮黄秋凯
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com