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

Mode switching circuit and mode switching method of switching power supply

A switching power supply and mode switching technology, applied in the field of power electronics, can solve the problems of poor dynamic response, slow discharge, and output voltage overshoot of switching power supply

Active Publication Date: 2021-08-06
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

[0002] The traditional switching power supply, taking the synchronous rectification buck converter as an example, usually makes the synchronous tube turn off when the inductor current crosses zero under light load, and when the load of the switching power supply jumps from heavy load to light load, the output voltage There will be overshoot. At this time, the charge on the output capacitor can only be discharged from the load, and the discharge is slow, which makes the dynamic response of the switching power supply poor.

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
  • Mode switching circuit and mode switching method of switching power supply
  • Mode switching circuit and mode switching method of switching power supply
  • Mode switching circuit and mode switching method of switching power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0033] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0034] Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another eleme...

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 mode switching circuit and a switching method of a switching power supply. The load state is judged by judging whether the body diode of the synchronous tube is turned off, and the switching power supply is controlled in the first mode when the load jumps. and the second mode, so as to ensure the efficiency of the system while suppressing the output voltage overshoot.

Description

technical field [0001] The present invention relates to a power electronic technology, more specifically, to a mode switching circuit and a mode switching method of a switching power supply. Background technique [0002] The traditional switching power supply, taking the synchronous rectification buck converter as an example, usually makes the synchronous tube turn off when the inductor current crosses zero under light load, and when the load of the switching power supply jumps from heavy load to light load, the output voltage There will be overshoot. At this time, the charge on the output capacitor can only be discharged from the load, and the discharge is slow, which makes the dynamic response of the switching power supply poor. Contents of the invention [0003] In view of this, the present invention provides a mode switching circuit and a mode switching method of a switching power supply, by controlling the switching power supply to switch between the first mode and th...

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): H02M3/156H02M3/158
CPCH02M3/156H02M3/1588H02M3/1566Y02B70/10H02M1/0032H02M1/08
Inventor 罗迪
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD