EVL6564-50WFLB Datasheet, PDF (1/6 Pages) STMicroelectronics – 50 W wide-range high power factor flyback converter demonstration board based on the L6564

EVL6564-50WFLB
50 W wide-range high power factor flyback converter
demonstration board based on the L6564
Data brief
Features
■ Line voltage range: 90 to 265 V_AC
■ Minimum line frequency (fL): 47- 63 Hz
■ Minimum switching frequency: 44 KHz
■ Reflected voltage: 140 V
■ Regulated output voltage: 24 V
■ Rated output power: 50 W
■ Power factor (load ≥ 50%): 0.9 minimum
■ Minimum efficiency at full load: 88%
■ Maximum 2fL output voltage ripple: 1.1 V pk-pk
(V_IN=230 V_AC, P_OUT=50 W)
■ Maximum ambient temperature: 50 °C
■ Conducted EMI: in acc. with EN55022 Class-C
■ PCB type and size: single-side, 35 µm, CEM-1,
140 x 60 mm
Description
The EVL6564-50WFLB demonstration board
implements a 50 W, wide-range mains input,
power factor corrected, power supply suitable for
all low power applications needing a high PF,
such as lighting applications, LED power supplies,
etc. It is possible through the use of a low-cost
device like the L6564 united with a simple
topology like the flyback one, providing, therefore,
a very competitive solution.
The main feature of this converter is that the input
current is almost in phase with the mains voltage;
therefore the power factor is close to unity. This is
achieved by the controller, the L6564, shaping the
input current as a sinewave in phase with the
mains voltage.
June 2012
Doc ID 023237 Rev 1
For further information contact your local STMicroelectronics sales office.
1/6
www.st.com
6