DER-318 describes a low profile T8 (<10 mm component height), isolated, high power factor (PF) and constant output current LED driver, designed to drive a nominal LED string voltage of 50 V at 430 mA from an input voltage range of 185 VAC to 265 VAC. The LED driver utilizes the LNK419EG from the LinkSwitch-PH family of ICs.

Key features and benefits include:

Single-stage converter, combining both PFC and CC functions
Highly energy efficient: ≥87% at 230 VAC
Low THD, meets IEC 61000-3-2 C Class C harmonic limits

The topology used in DER-318 is a single-stage, power factor corrected continuous conduction mode flyback. LinkSwitch-PH ICs provides a sophisticated range of protection features including auto-restart for open control loop and output short-circuit conditions.