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

A DC/DC communication switch power

A switching power supply, main switch technology, used in electrical components, regulating electrical variables, control/regulating systems, etc.

Inactive Publication Date: 2007-10-17
SHANGHAI XINFENG ELECTRONICS
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for the existing switching power supply to achieve the goal effectively with a simple and appropriate solution in these aspects, and maintain an excellent cost performance

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 DC/DC communication switch power
  • A DC/DC communication switch power

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] As shown in the figure, it includes EMC suppression circuit 1 installed on the printed board, self-starting control circuit 2, +5 volt main switch circuit 3, +5 volt PWM circuit 4, -5 volt voltage stabilization filter circuit 5, + 5 volt filter loop 6, +5 volt feedback loop 7, auxiliary power supply 8, protection loop 9, -42 volt PWM loop 10, -42 volt feedback loop 11, -42 volt switch loop 12 and -42 volt filter loop 13; :

[0022] The output end of described EMC suppression loop 1 is connected with self-starting control loop 2, +5 volt main switch loop 3,-42 volt switch loop 12 respectively;

[0023] The output end of the self-starting control circuit 2 is connected with the auxiliary power supply 8, and the auxiliary power supply 8 is controlled to provide auxiliary power supply when starting up and failing. The input ends of the PWM circuit 10 are connected;

[0024] The +5 volt main switching circuit 3 includes a high-frequency transformer T1, a switching tube, th...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention provides a DC / DC communication switch power supply including an EMC restraint loop, a self-start control loop, a +5 voltage main switch loop, a +5 voltage PWM loop, a -5 voltage regulation filtering loop, a +5 voltage filtering loop, a +5 voltage feedback loop, an auxiliary power supply, a protection loop, a -42 voltage PWM loop, a -42 voltage feedback loop, a -42 voltage switch loop and a -42 voltage filtering loop which are positioned on the printed plate; the +5 voltage PWM loop and the -42 voltage PWM loop adopt the automatic control DC / DC converting circuit of the single-terminal normal-shock PWM integrated circuit chip. Said printed plate adopts copper foil lead having a thickness of 0.7MM, and more than 90% of the whole board is covered with the copper foil. Each circuit includes a switch transformer and the heating elements including MOS tube are all positioned on the top of the printed plate; the radiators and transformers of each circuit are distributed in parallel with gap therebetween to generate air flow tunnel effect. The DC / DC communication switch power supply has a high transforming efficiency and a low heat self-productivity.

Description

technical field [0001] The invention relates to DC power supply equipment, in particular to a DC / DC communication switching power supply. Background technique [0002] In the field of communication, the quality of the power supply is very high, especially for the professional DC-DC conversion switching power supply, which requires high conversion efficiency and low heat generation of the circuit itself. It is difficult for the existing switching power supply to achieve the goal effectively with a simple and appropriate solution in these aspects, and maintain an excellent cost performance. For example, in some communication power supplies, the full-load output power of the power supply is required to be as high as 313W, one of which outputs -5V, 30A low-voltage high-current, and the full-load efficiency is required to be ≥ 87%. There are extremely strict requirements on temperature rise, not only the overall temperature rise but also the temperature and distribution of high-...

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): H02M3/00
Inventor 沈平康
Owner SHANGHAI XINFENG ELECTRONICS
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