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8.8 W high efficiency (>86%) high power factor (>0.91) TRIAC dimmable non-isolated buck LED driver using LYTSwitch TM -4 LYT4321E

DER-370 - 8.8 W High Efficiency, High PF, TRIAC Dimmable, Non-Isolated for PAR16 LED Lamp

Overview

This document describes a non-isolated, high power factor (PF), high efficiency, TRIAC dimmable LED driver designed to drive 57 V at 155 mA over an input voltage range of 190 VAC to 265 VAC (50 Hz) The nominal LED string voltage is typical). The topology used is a single-stage non-isolated buck, which meets high power factor, constant current output and provides dimming function. This document contains LED driver specifications, schematics, PCB information, bill of materials, transformer documentation, and typical performance characteristics.

Blockdiagram

Design Files

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LYTSwitch-4		Single-Stage Accurate Primary-Side Constant Current (CC) Controller	Download

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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.

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Update:2024-11-15 00:05:06

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