RDR-271: 130mA @ 35V Max, 85 ~ 135VAC

1 января 2018

This document is an engineering report describing a non-isolated LED driver (power supply) utilizing a LNK458KG from the LinkSwitch-PL family of devices. The RD-271 provides a single constant current output of 130 mA over an LED string voltage of 35 V.

The board was optimized to operate over the low AC input voltage range (85 VAC to 135 VAC, 47 Hz to 63 Hz). LinkSwitch-PL based designs provide a high power factor (>0.9) meeting current international requirements.

The form factor of the board was chosen to meet the requirements for standard pear shaped (E17) 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, and performance data.