STEVAL-ILB004V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Demonstration board: multipower ballast for T5 fluorescent tube lamps based on the ST7LIT19BF1 and STP5NK60Z

STEVAL-ILB004V1
Demonstration board: multipower ballast for T5 fluorescent
tube lamps based on the ST7LIT19BF1 and STP5NK60Z
Data Brief
Features
■ Improved efficiency
■ Increased lamp life
■ Lightweight with smaller dimensions
■ Better lamp power control
Description
The STEVAL-ILB004V1 demonstration board is
an electronic ballast that adds “intelligence” to
ballast circuits, thanks to the use of a
microcontroller. Rather than having a dedicated
circuit for each tube lamp with a single ballast, the
STEVAL-ILB004V1 can drive many different lamp
groups. The system is capable of recognizing T5-
type fluorescent lamps, with power ratings of 24
W, 39 W, 54 W and 80 W. It consists of two main
blocks: a boost converter (power factor controller)
working in transition mode (fixed TON and
variable frequency), and an inverter in half-bridge
configuration working in zero-voltage switching.
Both the ballast and PFC stages are controlled by
the ST7LIT19BF1 microcontroller, which provides
its signal to the L6382D5 power management
unit. The power management unit delivers the
right voltage and current levels to the
STP5NK60Z power MOSFET. After tube
recognition, the system sets the parameters to
drive the lamp correctly.
STEVAL-ILB004V1
December 2008
Rev 1
For further information contact your local STMicroelectronics sales office.
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