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

Converter circuit composed of no-loss current buffer circuit

A technology of current buffering and circuit formation, which is applied in the direction of converting DC power input to DC power output, adjusting electrical variables, and converting devices for output power, etc. , The effect of reducing electromagnetic noise emission and avoiding large losses

Active Publication Date: 2010-05-12
BEIJING SUPLET +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This problem can be better solved by using zero-voltage transition (ZVT) technology, but it needs to add switching devices and control lines, the circuit is complex and the cost is high

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
  • Converter circuit composed of no-loss current buffer circuit
  • Converter circuit composed of no-loss current buffer circuit
  • Converter circuit composed of no-loss current buffer circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like figure 1 Shown is the current common Boost converter circuit diagram.

[0022] like figure 2 Shown is the circuit diagram of the first converter composed of a lossless current buffer and a Boost boost converter. it is in figure 1 On the basis of the Boost converter circuit shown above, disconnect the anode of the rectifier D1 from the original circuit; connect the connection point of the buffer inductor L2 and the energy storage capacitor C2 to the anode of the rectifier D1; connect the buffer inductor L2 and the buffer The connection point of the anode of the diode D2 is connected with the drain of the switching tube Q1 and the boost inductor L1, and the cathode of the discharge diode D3 is connected with the cathode of the rectifier D1. The dashed box is a lossless current snubber circuit.

[0023] like image 3 Shown is the circuit...

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 no-loss current buffer circuit and two converter circuits consist of a no-loss current buffer circuit and a Boost converter circuit. The no-loss current buffer circuit is a closed current loop which comprises a buffer inductance L2, a buffer diode D2 and an energy storage capacitor C2, which are connected end to end. The two converter circuits are formed by connecting theno-loss current buffer circuit with the Boost converter in two types. The invention is the converter circuits formed by the no-loss current buffer circuit. The current converting process between theBoost converter switching tube and the rectifying tube is buffered and the current change rage is reduced, thereby reducing the loss of the converter and the emission of the electromagnetic noise of the converter. As the buffer adopts the passive no-loss circuit structure, the spoilage of the buffer is avoided in the situation of needing no additional control line.

Description

technical field [0001] The invention relates to a switching power supply and the field of power conversion, in particular to a lossless current buffer circuit for a Boost converter. Background technique [0002] Boost converter is a commonly used switching power supply circuit. The converter has two working modes, namely continuous current mode (CCM) and discontinuous current mode (DCM). In the current continuous mode, the peak current of the switch tube and the rectifier tube is low, which is suitable for high power output. When the boost converter works in the current continuous working mode, there will be a commutation process in the common state of the switch tube and the rectifier tube when the switch tube is turned on. During this process, the current of the rectifier tube will turn to the switch tube sharply, and the current Rising too fast will cause a large loss in the switch tube, and the current of the rectifier tube falling too fast may cause a large reverse rec...

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): H02M1/34H02M3/335
Inventor 陈永胜丁贤后
Owner BEIJING SUPLET
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