DER-323: 200mA @ 90V Max, 90 ~ 135VAC in


The document describes a non-isolated, high efficiency, high power factor (PF) LED driver designed to drive a nominal LED string voltage of 85 V at 200 mA from an input voltage range of 90 VAC to 135 VAC (47 Hz – 63 Hz). The LED driver utilizes the LNK460VG from the LinkSwitch-PL family of ICs.

The topology used is a single-stage non-isolated buck-boost that meets the stringent space and efficiency requirements for this design. LinkSwitch-PL based designs provide a high power factor (>0.99) meeting international requirements.

This document contains the LED driver specification, schematic, PCB details, bill of materials, transformer documentation and typical performance characteristics.


Manufacturer Power Integrations
Category Lighting
Sub-Category LED Drivers - AC / Offline
Eval Board -
AC Voltage 115 V
Outputs and Type 1 Non-Isolated
Current Out 200 mA
Voltage Out (Max) 90 V
Efficiency @ Conditions >88%, 98 ~ 135 VACin, @ 90 V
>88%, 100 ~ 135 VACin @ 80 V, 85 V
Features Current Limit (Adj. or Fixed)
Dimming Control
Frequency Jitter for EMI
Open Circuit Protection
Over Current Protection
Over Voltage Protection
Short Circuit Protection
Thermal Protection
Switching Frequency 29.6 ~ 122 kHz
Component Count + Extras 26 + 0
Design Author Power Integrations
Application / Target Market LED Commercial Lighting
LED Home Lighting
Voltage In 90 ~ 135 VAC
Power Factor >0.99
Standard(s) IEC 61000-3-2 Class C
Main I.C. Base Part LNK460

Share This Design