STEVAL-ISA081V1 STMicroelectronics

STEVAL-ISA081V1 12 V /1 A SMPS wide range demonstration board based on the VIPER26 Data brief Features Vin: 85 ~ 305 Vrms / f: 45 ~ 66 Hz V : 12 VDC 10 %, 1 A (at 3.3 V not loaded) out1 V : 3.3 VDC 4 %, 100 mA out2 Maximum total output current: 1 A Standby < 120 mW at 230 VAC Short-circuit: protected PCB type and size: FR4, single-side 35 m, 32 x 90 mm Isolation: isolated 4 kV / 8 mm EMI: according to EN55022 Class STEVAL-ISA081V1 RoHS compliant Description The STEVAL-ISA081V1 demonstration board is a switched mode power supply (SMPS) demonstration board and it is an isolated SMPS capable of delivering a 12 W output over a wide input voltage range. It is designed for a mains application focusing on cost and size effective solutions. The STEVAL-ISA081V1 SMPS generates 12 V nominal output voltage using primary regulation and it is based on the VIPER26 monolithic converter, integrating a high voltage MOSFET and PWM controller in one package. November 2010 Doc ID 18139 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Schematic diagram STEVAL-ISA081V1 1 Schematic diagram Figure 1. Circuit schematic 2/4 Doc ID 18139 Rev 1 2 &4