A LED driver chip and circuit for improving compatibility with thyristor dimmer
A technology of LED driving and dimmer, applied in the field of LED driving, can solve the problems of increasing chip cost, increasing loss, increasing area and cost, etc., and achieving the effect of increasing input current, reducing cost and reducing loss
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0050] Below, according to the accompanying drawings, preferred embodiments of the present invention are given and described in detail, so that the functions and features of the present invention can be better understood.
[0051] like figure 2As shown, an LED drive circuit of the present invention that improves compatibility with silicon controlled dimmers includes a peripheral circuit 1 and an LED drive chip 2 . Among them, the peripheral circuit 1 is a general circuit, which includes AC power supply AC, thyristor dimmer 11, rectifier circuit 12, transformer T0, output voltage sampling resistor Rcs, power MOS tube M0, freewheeling diode D0, LED load, input Current sampling resistor Rdet and clamping diode D1; LED driver chip 2 is the core of the present invention, which includes a hysteresis comparator 21, a transconductance module Gm, a first inverter Inv1, a compensation capacitor Ccomp, an isolation capacitor Ccompbf, a first NMOS Tube M1, second NMOS tube M4, first PMO...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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