AN4376 datasheet(1/37 Pages) STMICROELECTRONICS

Il numero della parte	AN4376

Spiegazioni elettronici	10 W wide range non-isolated high power factor LED driver using HVLED815PF

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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January 2014

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AN4376

Application note

10 W wide range non-isolated high power factor LED driver using

HVLED815PF

Federico Levati

Introduction

This application note describes the performances of a non-isolated 10 W, wide range,

regulated LED driver using the HVLED815PF device, with a high power factor and

a constant output current regulation. The maximum power and form factor have been

designed for the lighting market, facilitating the replacement of the incandescent lamps.

In fact the architecture is based on a single-stage buck-boost topology and it has been used

the STMicroelectronics® HVLED815PF device with a primary side control to achieve an

LED current regulation within ± 5% and a high power factor.

The patented primary side regulation, the internal high-voltage primary switcher operating

directly from the rectified mains and the high-voltage start-up generator contained in the

HVLED815PF device allow a very cost-effective solution for an LED driving.

Figure 1. EVLHVLED815W10A demonstration board

www.st.com

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