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

A Wide Input Voltage Flyback Switching Power Supply Suitable for Driving DC Motors

A technology of switching power supply and DC motor, which is applied in the direction of converting DC power input to DC power output, electrical components, and adjusting electrical variables. It can solve the problems of increased product design and management costs, high cost, and large power supply volume. cost effect

Active Publication Date: 2017-02-08
JULONG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The AC mains voltage in the world is generally 100-120V or 220-240V. In some areas with backward power, the voltage fluctuation range is very large, and the largest fluctuation can be from 80 to 300V. Now the widely used switching power supply, the general flyback switching power supply The input voltage range of the converter can only satisfy the relationship of 1:3, that is, 90-270VAC, and the input voltage range of the forward converter is small, only 90-130VAC or 180-264VAC; while using the boost mode (AFC ) converter input voltage range is only 90-270VAC (and the cost is high), if the input voltage of the product changes greatly under the existing technical conditions, the switching power supply used in the product must be redesigned, which will make product design and management Increased costs
The input voltage range of the converter using the boost mode (AFC) is 90-270VAC, which can indeed meet the voltage requirements of most regions, but the power supply is large in size and high in cost, and cannot meet the requirements of some special regions.

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 Wide Input Voltage Flyback Switching Power Supply Suitable for Driving DC Motors
  • A Wide Input Voltage Flyback Switching Power Supply Suitable for Driving DC Motors
  • A Wide Input Voltage Flyback Switching Power Supply Suitable for Driving DC Motors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 As shown, the present invention includes sequentially connected power starting circuit 1, clamping circuit 2, switching transformer 3, constant power circuit 4 and constant voltage control circuit 5, wherein power starting circuit 1 is connected with switching transformer 3 and constant voltage control circuit 5 .

[0023] Such as figure 2 As shown, the present invention adopts the domestic switching power supply chip CR6842, and the IC integrated circuit has an optimized totem pole drive circuit and a current mode PWM controller circuit, wherein the PWM controller circuit includes a frequency oscillation generator circuit and short circuit protection, overcurrent protection, Over-power protection, over-voltage protection circuit. Frequency jitter generated by oscillation can improve EMI (Electromagnetic Interferenc...

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 wide input voltage flyback switching power supply suitable for driving a DC motor, comprising: a sequentially connected power starting circuit, a clamping circuit, a switching transformer, a constant power circuit and a constant voltage control circuit, a power starting circuit and a switch Transformer, constant voltage control circuit connection. The invention can realize ultra-wide input voltage at a lower cost and can be used as a drive power source for a medium-power DC motor. The power source efficiency is as high as 85%, the input voltage range is wide, and the maximum output power can reach 240W.

Description

technical field [0001] The invention relates to a switching power supply, in particular to a wide input voltage flyback switching power supply circuit suitable for driving a DC motor. Background technique [0002] The AC mains voltage in the world is generally 100-120V or 220-240V. In some areas with backward power, the voltage fluctuation range is very large, and the largest fluctuation can be from 80 to 300V. Now the widely used switching power supply, the general flyback switching power supply The input voltage range of the converter can only satisfy the relationship of 1:3, that is, 90-270VAC, and the input voltage range of the forward converter is small, only 90-130VAC or 180-264VAC; while using the boost mode (AFC ) converter input voltage range is only 90-270VAC (and the cost is high), if the input voltage of the product changes greatly under the existing technical conditions, the switching power supply used in the product must be redesigned, which will make product d...

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): H02M3/335H02M1/36H02M1/32
CPCH02M1/32H02M1/36H02M3/33576H02M1/325
Inventor 柳长庆柳永诠郑学凯崔彦身冯轶君崔文华
Owner JULONG
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