May 2010

Doc ID 15396 Rev 2

1/16

UM0677

User manual

High-efficiency switching LED driver

for high-current LEDs

1

Introduction

The progress made in the field of LEDs has led to rapid and impressive results in output

current capabilities. A short time ago the most advanced LEDs had current at 0.350 A, soon

followed by 0.7 A and then 1 A devices. Nowadays even LEDs with several amps of output

are present on the market. These high currents are increasing the requirements on the

driving circuitry for both efficiency and features. This document presents the demonstration

board designed for 2.8 A LEDs (1-3 in a series string) focusing on easy dimming and high

efficiency.

Figure 1.

STEVAL-ILL023V1 - 2.8 A LED driver (LED is not included in the kit)

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