STEVAL-ISA142V1 STMicroelectronics

STEVAL-ISA142V1 50 W, wide-range, high power factor flyback converter using the L6564 Data brief Description The STEVAL-ISA142V1 product evaluation board implements a 50 W, wide-range mains input, power factor-corrected power supply suitable for all low power applications requiring a high power factor, such as lighting applications and LED power supplies. Use of the low-cost L6564 combined with simple flyback topology provide a very competitive solution. Features Line voltage range: 90 to 265 VAC 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 2 fl output voltage ripple: 1.1 V pk- pk (V =230 V , P =50 W) IN AC out Maximum ambient temperature: 50 C Conducted EMI: in accordance with EN55022 class-B PCB type and size: single-sided, 35 um, CEM-1, 140 x 60 mm RoHS compliant November 2013 DocID025413 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram STEVAL-ISA142V1 1 Schematic diagram Figure 1: Circuit schematic GSPG18102013DI1100 2/4 DocID025413 Rev 1