DER-315: 93mA @ 48V Max, 90 ~ 132VAC in

This document is an engineering report describing a non-isolated, high-efficiency, high power factor, TRIAC dimmable LED driver designed to drive a nominal LED string voltage of 48 V at 93 mA (4.5 W). Input voltage range is 90 VAC to 132 VAC (47 Hz - 63 Hz). This LED driver utilizes LNK458KG from the LinkSwitch-PL family of devices.

LinkSwitch-PL based designs provide a high power factor (>0.9) meeting international requirements.

The form factor of the board was chosen to meet the requirements for standard B10 LED replacement lamps. The output is non-isolated and requires the mechanical design of the enclosure to isolate the output of the supply and the LED load from the user.

The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, design spreadsheet and performance data.