STEVAL-ILL042V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – 60 W high power factor flyback LED driver based on the L6562AT and TSM101

STEVAL-ILL042V1
60 W high power factor flyback LED driver based on the
L6562AT and TSM101
Data brief
Features
■ Mains voltage range: V_ACmin = 185 V_ac,
V_ACmax = 265 V_ac
■ 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_SWmin = 57 Hz
■ Reflected voltage: V_R = 195 V
■ Leakage inductance spike: V_spike = 100 V
■ Expected efficiency: 92 %
■ RoHS compliant
Description
The STEVAL-ILL042V1 demonstration board is a
LED power supply in high PF flyback
configuration able 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
one for constant current control.
The L6562AT is a PFC controller operating 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% is
achievable.
This system, designed using the L6562AT and the
TSM101 controller, offers several advantages in
terms of output current and voltage stability.
March 2012
Doc ID 022285 Rev 2
For further information contact your local STMicroelectronics sales office.
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