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September 2013 DocID025325 Rev 1 1/4
STEVAL-ILL042V2
60 W, high power-factor flyback LED driver
based on the L6562AT and TSM101
Data brief
Features
•Mains voltage range: VAC(min) = 185, VAC(max)
= 265
•Minimum mains frequency: fL = 47 Hz
•DC output voltage: VOUT = 130 V
•Maximum output current: IOUT = 0.462 A
•Minimum switching frequency:
fSW(min) =57Hz
•Reflected voltage: VR = 195 V
•Leakage inductance spike: VSPIKE = 100 V
•Expected efficiency: 92%
•RoHS compliant
Description
The STEVAL-ILL042V2 demonstration board is
an LED power supply in high PF flyback
configuration designed to drive a 60 W LED array.
The board is based on the L6562AT and the
TSM101 controller.
This configuration uses an isolated feedback with
an optocoupler and a secondary side
reference/error amplifier, the TSM101, for voltage
and current regulation.
The TSM101 includes two op-amps. One op-amp
is used for constant voltage control and the other
for constant current control.
The L6562AT is a PFC controller which operates
in transition mode. The highly linear multiplier
includes a special circuit which is able to reduce
AC input current distortion, allowing wide-range
mains operation with an extremely low THD, even
over a large load range.
Efficiency is high at heavy load - more than 90%
can be achieved.
Designed using the L6562A and the TSM101
controllers, this system offers several advantages
in terms of output current and voltage stability.
STEVAL-ILL042V2
www.st.com
Schematic diagram STEVAL-ILL042V2
2/4 DocID025325 Rev 1
1 Schematic diagram
Figure 1. STEVAL-ILL042V2 circuit schematic
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AM17532v1
DocID025325 Rev 1 3/4
STEVAL-ILL042V2 Revision history
4
2 Revision history
Table 1. Document revision history
Date Revision Changes
30-Sep-2013 1 Initial release.
STEVAL-ILL042V2
4/4 DocID025325 Rev 1
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