18W non-isolated buck-boost LED driver designed with LNK419EG, with circuit diagram, bill of materials, specification file,

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Summary:

This document describes a general purpose, non-isolated, high efficiency, high power factor (PF) LED driver. It can supply LED strings with a rated voltage of 200V and a rated current of 90MA in the range of 90 VAC to 265 VAC input voltage. This LED driver is designed using the LinkSwitch-PH series of LNK419EG devices.

This document contains LED driver specifications, schematics, PCB design drawings, bill of materials, transformer specification files, and typical performance characteristics.

18W non-isolated LED driver EMI board and buck-boost board

18W non-isolated LED driver EMI board (front)

18W non-isolated LED driver EMI board (reverse)

Buck-Boost Board for 18W Non-Isolated LED Driver

Buck-Boost A for 18W Non-Isolated LED Driver

Buck-Boost B for 18W Non-Isolated LED Driver

18W non-isolated LED driver circuit diagram

18W non-isolated LED driver EMI board PCB layout

PCB layout of the buck-boost board A&B for 18W non-isolated LED driver (front)

PCB layout of the buck-boost board A&B of 18W non-isolated LED driver (reverse)

See the uploading documentation for details (click to download)