STEVAL-ILL042V2
60 W, high power-factor flyback LED driver
based on the L6562AT and TSM101
Data brief
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.
STEVAL-ILL042V2
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.
Features
•
Mains voltage range: V
AC(min)
= 185, V
AC(max)
= 265
•
Minimum mains frequency: f
L
= 47 Hz
•
DC output voltage: V
OUT
= 130 V
•
Maximum output current: I
OUT
= 0.462 A
•
Minimum switching frequency:
f
SW(min)
= 57 Hz
•
Reflected voltage: V
R
= 195 V
•
Leakage inductance spike: V
SPIKE
= 100 V
•
Expected efficiency: 92%
•
RoHS compliant
September 2013
DocID025325 Rev 1
1/4
www.st.com
For further information contact your local STMicroelectronics sales office.
STEVAL-ILL042V2
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