4 x 18 W wide-range ballast based on the L6585DE combo IC
Features
STEVAL-ILB008V1
Data brief
■ Input voltage: 90 to 265 V
■
Line frequency: 50/60 Hz
■ Capable of driving 4 x 18 W T8-type tubes
■ Power factor: > 0.98
■ THD: 10%
■ Average efficiency: 90%
■ EN55015 compliant
■ End-of-life detection
■ Broken lamp protection with adjustable timing
■ RoHS compliant
RMS
Description
The STEVAL-ILB008V1 is a wide-range lighting
ballast capable of driving 4 x 18 W linear T8
fluorescent tubes.
The ballast is controlled by the L6585DE IC,
which integrates PFC and half-bridge control
circuits, relevant drivers, and the circuitry required
to manage all lamp operating phases (preheating, ignition and run mode). Protection
against failures such as lamp disconnection, anticapacitive mode, and PFC overvoltage are
guaranteed and achieved using a minimum
number of external components.
STEVAL-ILB008V1
An electronic ballast consumes less power and
therefore dissipates less heat than an
electromagnetic ballast. The energy saved is
estimated to be in the range of 20-25% for a given
lamp power. Moreover, an electronic solution
allows for improved control of the filament current
and lamp voltage during pre-heating, resulting in
increased lamp life.
February 2011 Doc ID 16991 Rev 2 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Schematic diagram STEVAL-ILB008V1
1 Schematic diagram
Figure 1. Electrical schematic - 4 x 18 W T8 main wide range
2/4 Doc ID 16991 Rev 2
STEVAL-ILB008V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
20-Jan-2010 1 Initial release.
25-Feb-2011 2
Modified Figure 1: Electrical schematic - 4 x 18 W T8 main wide
range.
Doc ID 16991 Rev 2 3/4
STEVAL-ILB008V1
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4/4 Doc ID 16991 Rev 2
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