100W LED Switched-mode power supply (SMPS) application note describes the performance of the L6585DE driver, which can be used to build LED SMPS demonstration board (STEVAL-ILL038V1). This driver integrates a high-performance transition mode (TM) power factor correction (PFC) controller, half-bridge (HB) controller and all the relevant drivers necessary to build a combo IC.
The document details the performance of a 100 W LED SMPS using the STEVAL-ILLO38V1 demonstration board. The design is centered around the L6585DE, which integrates a high-performance transition mode (TM) power factor correction (PFC) controller and a half-bridge controller into a single SO20 package.
The solution features an extended input mains range of 90 to 265 Vac at 50/60 Hz, delivering a regulated output voltage of 48 V at 2.08 A. Key characteristics include compliance with EN61000-3-2 Class-D standards for mains harmonics and an efficiency better than 90% at full load. The design replaces electrolytic capacitors with film capacitors to ensure maintenance-free operation.
| Extended input mains range | 90 ~ 265 Vac - frequency 50/60 Hz |
|---|---|
| Output voltage | 48 V at 2.08 A |
| Mains harmonics standard | EN61000-3-2 Class-D |
| Efficiency at full load | better than 90% |
| Dimensions | 75 x 135 mm |
The design delivers a regulated output voltage of 48 V at 2.08 A.
Yes, the design complies with EN61000-3-2 Class-D for mains harmonics.
Film capacitors are used because they offer excellent electrical properties and are advantageous in high current and high temperature conditions.