supremeOne

DER-445 - 20 W power factor corrected, non-isolated, TRIAC dimmable LED driver

DER-445 - 20 W Power Factor Corrected, Non-Isolated, TRIAC Dimmable LED Driver

Overview

This document describes a non-isolated, high power factor (PF), TRIAC dimmable LED driver designed to drive 96 V at 210 mA from a high line input voltage range of 195 VAC to 265 VAC (50 Hz typical). Nominal LED string voltage. The LED driver uses LYT4326E in the LYTSwitch-4 series IC. The topology used is a single-stage non-isolated buck-boost, which meets the constant current regulation and dimming requirements of this design. This document contains LED driver specifications, schematics, PCB details, bill of materials, transformer documentation and typical performance characteristics

Blockdiagram

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-24 03:47:34

Introduction to Altium Designer's Device Sheet Symbol
Device Sheet Symbol Introduction to Altium Designer's Device Sheet Symbol Device Sheet Symbol can abstract a drawing into a module and place it directly in the schematic diagram for use. Its essence i
Could you please help me find what the blue thing below is?
What are the blue components on this circuit board?
Function SysCtlClockSet() takes time
When I was testing the power consumption of LM3S3748 recently, I found a problem.In the MAIN function, the calling function SysCtlClockSet(SYSCTL_SYSDIV_5 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_X
Millivolt amplifier circuit
Hello everyone, this is my first time to come to this forum to ask for help, I am really sorry! I recently encountered a problem. I now have a sensor signal of 0-10mv, but the minimum pointer millivol
Introducing several Allegro chips used in LED lighting and display products
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 20:00[/i]
How to prepare for the competition and let the teachers who have achieved results speak~~~
[i=s]This post was last edited by paulhyde on 2014-9-15 09:19[/i] Attached are some materials for preparing for the competition. I think they are good, so I would like to share them with my friends in

Datasheet More

Circuits More