Data Brief

For further information contact your local STMicroelectronics sales office.

March 2009

Rev 2

1/4

4

STEVAL-ILB005V2

Demonstration board for the L6585DE combo IC

for PFC and ballast control

Features

Description

Requirements for modern fluorescent lamp

electronic ballasts focus on driver efficiency and

safety aspects.

Previous dedicated ICs for ballast applications

allowed designers to achieve good driver

efficiency, but they required a lot of external

circuitry to obtain good power factor correction,

low THD and a full set of protection features.

The STEVAL-ILB005V2 demonstration board is

based on the new L6585DE combo IC for ballast

applications, which offers designers a high-

performance PFC stage, and a high capability,

fully programmable, half-bridge high-voltage

driver. The device is also equipped with a full set

of protection features.

Designed in high-voltage BCD off-line technology,

the L6585DE embeds a PFC controller, a half-

bridge controller, the relevant drivers and all the

logic circuitry necessary to build an electronic

ballast.

Another important feature of the IC is its capability

to control and limit the lamp voltage during the

ignition phase.

The pre-heating and ignition durations are

independently configurable, as are the half-bridge

switching frequencies for each operating phase

(pre-heating, ignition and normal mode).

Other features, such as half-bridge over-current

with frequency increase and PFC over-voltage,

allow designers to build a reliable, flexible solution

with a reduced component count.

STEVAL-ILB005V2

www.st.com