supremeOne

DER-406 - 5.76 W high PF non-isolated buck-boost TRIAC dimmable LED driver for A19 lamps

DER-406 - 5.76 W High PF Non-Isolated Buck-Boost, TRIAC Dimmable LED Driver for A19 Lamps

Overview

This document describes a non-isolated, high power factor (PF), TRIAC dimmable LED driver designed to drive 48 V, 120 mA over an input voltage range of 185 VAC to 265 VAC (50 Hz typical). Nominal LED string voltage. The LED driver uses LYT4322E in the LYTSwitch-4 series IC. The topology used is a single-stage, non-isolated buck-boost, which provides high power factor, constant current regulation, and provides excellent dimming performance. This document contains LED driver specifications, schematics, PCB details, bill of materials, transformer documentation and typical performance characteristics.

Design Files

der406

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:2025-06-18 23:18:27

A perpetual calendar program
I made a perpetual calendar program. When adjusting the year, month, day, hour, minute, and second, errors occasionally occur. For example, some unwanted decimal characters such as H6 and H7 appear. W
EEWORLD University - How to design power integrity: Finding power transmission noise problems
How to Design for Power Integrity: Looking for Power Delivery Noise Issues : https://training.eeworld.com.cn/course/4384This video provides an understanding of how the voltage regulator module (VRM) i
If you urinate on a 380V high voltage wire (live electricity), will you be electrocuted? Will urine become a conductor and carry electricity, giving you an electric shock?
Reprinted from: Institute of Physics, Chinese Academy of Sciences We all know that electricity is very dangerous. The safe voltage for the human body under dry conditions is only 36V, and the industri
Please help me find the schematic diagram, thank you very much
Solve the circuit principle in the figure. The whole circuit is an esd protection circuit. If the input voltage at 1 is a positive pulse and is greater than the reverse working voltage, D2 will be tur
I hope you can solve my doubts about the camera.
I have an ARM FL2440 board. If I want to make a camera program (Linux), and buy a mainstream camera from the market, with slightly higher pixels and USB2.0, and want to capture images and display them
There is a problem when importing a project from controlsuite. I can't solve it and need help
There is a problem when importing a project from controlsuite. How should I solve it? I just learned dsp and have many questions

Datasheet More

Circuits More