AN4314 datasheet(1/31 Pages) STMICROELECTRONICS

Part #	AN4314

Description	25 W wide-range high power factor buck-boost converter demonstration board using the L6564H

PDF	31 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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July 2013

DocID024821 Rev 2

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AN4314

Application note

25 W wide-range high power factor buck-boost converter

demonstration board using the L6564H

Introduction

This application note describes a wide-range non-isolated 25 W regulated LED driver with

high power factor. The EVL6564H-25W-BB demonstration board is well-suited to the

Japanese market due to the broad use of standard 100 V

ac

lighting applications and also

200 V

ac

tubes in building automation systems.

The EVL6564H-25W-BB demonstration board has been designed in order to obtain the

highest possible power factor over the entire input mains voltage, remaining compliant to

EN55022 Class-B and keeping the average output current in a tight band with different LED

characteristics.

The board is based on ST's L6564H power factor controller and the SEA05L CC-CV

controller for LED current regulation in a non-isolated flyback configuration.

The form factor has been designed to fit into a standard LED driver case, facilitating the

replacement of the incandescent flood lamps up to 80-100 W power.

Figure 1. EVL6564H-25W-BB demonstration board using the L6564H

www.st.com

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