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

A switching power supply control method, switching power supply control circuit and switching power supply

A technology of switching power supply and control method, which is applied in the fields of switching power supply control, switching power supply control circuit and switching power supply, and can solve the problems of low output voltage regulation ability and noise generation.

Active Publication Date: 2016-06-15
SILERGY SEMICON TECH (HANGZHOU) CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a switching power supply control method, switching power supply control circuit and switching power supply to solve the problems of low output voltage regulation and noise generation in the prior art

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 switching power supply control method, switching power supply control circuit and switching power supply
  • A switching power supply control method, switching power supply control circuit and switching power supply
  • A switching power supply control method, switching power supply control circuit and switching power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0070] The invention provides a switching power supply control method, which is used for controlling the main power stage circuit of the switching power supply, so as to solve the problems of low output voltage regulation ability and noise generation in the prior art.

[0071] Specifically, such as figure 1 shown, including the following steps:

[0072] S101. Receive the output voltage feedback signal FB and the output voltage reference signal REF of the main...

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 switching power supply control method, a switching power supply control circuit and a switching power supply. A driving signal used for driving a main power level circuit to start according to different frequencies is generated and sent according to a first control signal and a second control signal, even if the system is located at a light load mode, the main power level circuit can also start and close corresponding frequency according to the driving signal instead of entering a sleep state so as to avoid the problem of low regulation ability of the main power level circuit on output voltage caused by overlow voltage on an output capacitor at the light load mode of the system, and noise capable of being heard by a human ear caused by the starting frequency of the main power level circuit is also avoided.

Description

technical field [0001] The invention relates to the technical field of switching power supplies, in particular to a switching power supply control method, a switching power supply control circuit and a switching power supply. Background technique [0002] In a switching power supply using peak current control mode, we usually use the output signal of the error amplifier as the reference value of the peak current. Therefore, by setting a high clamp value and a low clamp value for the output signal of the error amplifier, the peak current can be obtained maximum and minimum values ​​of . When the output signal of the error amplifier is clamped low, it means that the system has entered the light-load mode. In the prior art, when the system enters the light-load mode, most of its modules are in a sleep state that is turned off. [0003] This control method in the prior art can save the power consumption of the system working in the light-load mode, but since the main power stag...

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): H02M1/00H02M1/44
Inventor 迈克尔·格林陈君
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD