LED drive power supply employing non-isolated multi-path passive current balancing

A technology of LED drive and passive current sharing, which is applied in the direction of light sources, electric light sources, electrical components, etc., can solve the problems of high driving voltage and reduced reliability, and achieve the effect of simple circuit, good current sharing effect and high efficiency

Inactive Publication Date: 2016-07-06
FUZHOU UNIV
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Connecting LEDs in series can ensure that their forward currents are equal, but too many LEDs in series will make the driving voltage too high and the re

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
  • LED drive power supply employing non-isolated multi-path passive current balancing
  • LED drive power supply employing non-isolated multi-path passive current balancing
  • LED drive power supply employing non-isolated multi-path passive current balancing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0019] A non-isolated multi-channel passive current-sharing LED drive power supply of the present invention includes a half-bridge LCL resonant network, a current-sharing network and an LED lamp load circuit, and the LED lamp load circuit includes 2N LED lamp loads; the half-bridge The bridge LCL resonant network realizes the current sharing output of the 2N LED lamp loads through the current sharing network; the current sharing network includes the first to the second N capacitors, the first to the second N rectifier diodes, and the negative pole of the first rectifier diode It is connected to the anode of the second rectifier diode, and connected to the first output terminal of the half-bridge LCL resonant network through the first capacitor, and the anode of the first rectifier diode is connected to the first LED lamp load of the LED la...

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 an LED drive power supply employing non-isolated multi-path passive current balancing. The LED drive power supply comprises a half-bridge LCL resonance network, a current balancing network and an LED lamp load circuit, wherein the LED lamp load circuit comprises 2N paths of LED lamp loads; the half-bridge LCL resonance network achieves current balancing output of the 2N paths of LED lamp loads through the current balancing network; and N is a natural number greater than or equal to 2. 2N paths of passive current balancing output circuits based on the half-bridge LCL resonance network can achieve current balancing output for four paths or any 2N paths of LED lamp loads which are the same or different in quantity. The LED drive power supply has the advantages of being simple in structure, high in efficiency, good in current balancing effect and the like.

Description

technical field [0001] The invention relates to a non-isolated multi-channel passive current sharing LED driving power supply. Background technique [0002] In recent years, the current situation of energy shortage has made human beings increasingly aware of the importance of energy conservation and emission reduction. As a new type of lighting source, LED has the advantages of long life, energy saving and environmental protection, and is gradually favored by people, and has become the focus of attention in the lighting field. The efficient and reliable LED drive power supply is the key to the rapid development of LED lighting. [0003] The driving power supply is the power source of the LED. Its forward current determines the optical performance indicators such as the brightness, luminous flux and luminous efficiency of the LED, and the exponential relationship between its forward voltage and forward current makes a small voltage fluctuation lead to a large current change...

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): H05B33/08H05B44/00
CPCH05B45/48Y02B20/30
Inventor 林国庆林羽静
Owner FUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap