STEVAL-ILB007V1
2 x 58 W wide-range ballast based on the L6585DE combo IC
Data brief
Features
■
Input voltage: 85 to 265 VRMS
■
Line frequency: 50/60Hz
■
Capable of driving 2 x 58 W T8-type tubes
■
Power factor: 0.9
■
THD: 10%
■
Average efficiency: 90%
■
End-of-life detection
■
Broken lamp protection
■
RoHS compliant
STEVAL-ILB007V1
Description
The STEVAL-ILB007V1 demonstration board is
capable of driving 2 x 58 W linear T8 fluorescent
tubes, and with simple modifications can also be
adapted for 2 x 36 W linear T8 fluorescent tubes.
The ballast is controlled by the L6585DE device,
which integrates PFC and half-bridge control
circuits, the relevant drivers, and the circuitry to
manage all lamp operating phases (pre-heating,
ignition and run mode). Protection against failures
such as lamp disconnection, anti-capacitive mode
and PFC over-voltage are guaranteed and
achieved using a minimum number of external
components.
An electronic ballast consumes less power and
therefore dissipates less heat than an
electromagnetic ballast. The energy saved can be
estimated to be in the range of 20-25% for a given
lamp power.
Finally, the electronic solution allows better
control of the filament current and lamp voltage
during pre-heating, resulting in an increase in
lamp life.
January 2011
Doc ID 16969 Rev 2
For further information contact your local STMicroelectronics sales office.
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Schematic diagram
STEVAL-ILB007V1
Schematic diagram
Electrical schematic - 2 x 58 W T8 main wide range
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Revision history
Revision history
Table 1.
Document revision history
Date
Revision
Changes
12-Jan-2010
1
Initial release.
28-Jan-2011
2
Modified Figure 1: Electrical schematic - 2 x 58 W T8 main wide
range.
Doc ID 16969 Rev 2
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STEVAL-ILB007V1
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