ST Life.augmented


Demonstration board for the L6585DE combo IC for PFC and ballast control

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 highperformance 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 halfbridge 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.

pdf Please read
Errata Sheet
pdf Download
Data Brief

Key Features

  • Input voltage: 88 Vac - 277 Vac
  • Input frequency: 50 Hz - 60 Hz
  • Output power: 54 W
  • Expected efficiency: 90%
  • Expected Input power: 60 W
  • Minimum PF required: 0.95
  • Maximum THD: 8%
  • Lamp voltage (run mode): 110 Vrms
  • Lamp current (run mode): 455 mArms
  • Maximum ignition voltage: 900 Vpk
  • Maximum preheating voltage: < 240 Vac
  • Preheating time: 1 s
  • Ignition time: 60 - 100 ms


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB0779: Demonstration board for the L6585DE combo IC for PFC and ballast control
2.1 117 KB

Application Notes

Description Version Size
AN2982: 1 x 54 W T5 fluorescent lamp ballast in wide input voltage range using the L6585DE - STEVAL-ILB005V2
1.1 1,720 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for STEVAL-ILB005V2 board
1.0 77 KB

Bill of Materials

Description Version Size
BOM for STEVAL-ILB005V2 board
1.0 23 KB

Schematic Pack

Description Version Size
Board schematics for STEVAL-ILB005V2 board
1.0 38 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ILB005V2NRNDL6585DE-108No availability reported, please contact our Sales officeEcopack2-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Feedback Form
Customer Feedback