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

High-precision light-emitting diode (LED) control circuit and high-precision LED control method and LED drive circuit using the same

A technology of LED drive and control circuit, which is applied in the direction of electric lamp circuit layout, electric light source, electrical components, etc., can solve the problem of inaccurate LED dimming, etc., and achieve the effect of precise dimming

Active Publication Date: 2014-11-05
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

[0005] In view of this, the purpose of the present invention is to provide a high-precision LED control circuit and control method to overcome the problem that the compensation signal in the prior art cannot accurately represent the output voltage feedback signal and cause the LED dimming to be inaccurate.

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
  • High-precision light-emitting diode (LED) control circuit and high-precision LED control method and LED drive circuit using the same
  • High-precision light-emitting diode (LED) control circuit and high-precision LED control method and LED drive circuit using the same
  • High-precision light-emitting diode (LED) control circuit and high-precision LED control method and LED drive circuit using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0032] refer to Figure 2A , shows a functional block diagram of the first embodiment of the control circuit of the LED driving circuit according to the present invention. Similar to the background art, the LED drive circuit receives the enable signal EN, and performs power conversion to drive the LED load in the valid range of the enabl...

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

In one embodiment, a light-emitting diode (LED) driver can include: (i) a reference voltage control circuit configured to provide a reference voltage signal in response to an enable signal; (ii) a current control circuit configured to control an output current of the LED driver in response to the reference voltage signal; and (iii) the LED driver being configured to drive an LED load when the enable signal is active.

Description

technical field [0001] The present invention relates to the field of LED driving circuits, and more specifically, to a high-precision LED driving circuit control circuit and a control method. Background technique [0002] With the continuous innovation and rapid development of the lighting industry, coupled with the increasing importance of energy saving and environmental protection, LED lighting, as a revolutionary energy-saving lighting technology, is developing rapidly. However, due to the volt-ampere characteristics and temperature characteristics of the LED itself, the sensitivity of the LED to the current is higher than the sensitivity to the voltage, so the traditional power supply cannot directly supply power to the LED. Therefore, to use LED as a lighting source, we must first solve the problem of power drive. [0003] FIG. 1 shows a control circuit of a commonly used LED driving circuit in the prior art. The working state of the LED drive circuit is controlled by...

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): H05B37/02H05B44/00
CPCH05B37/02Y02B20/30H05B45/38H05B45/3725
Inventor 徐孝如张鲁
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD
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