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.

Key Features

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




Technical Documentation

Product Specifications
Description Version Size
DB0779 DB0779: Demonstration board for the L6585DE combo IC for PFC and ballast control 2.2 116 KB
Application Notes
Description Version Size
AN2982 AN2982: 1 x 54 W T5 fluorescent lamp ballast in wide input voltage range using the L6585DE - STEVAL-ILB005V2 1.1 1 MB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
Gerber files for STEVAL-ILB005V2 board 1.0 76 KB
Bill of Materials
Description Version Size
BOM for STEVAL-ILB005V2 board 1.0 23 KB
Schematic Packs
Description Version Size
Board schematics for STEVAL-ILB005V2 board 1.0 37 KB


License Agreement
Description Version Size
Evaluation products license agreement 1.0 125 KB
Support & Community
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Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors

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Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ILB005V2 NRNDCARDIndustrialEcopack2

(**) 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.