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.

Vin: 85 ∼ 305 Vrms / f: 45 ∼ 66 Hz
Vout1: 12 VDC ± 10 %, 1 A (at 3.3 V not loaded)
Vout2: 3.3 VDC ± 4 %, 100 mA
Maximum total output current: 1 A
Standby < 120 mW at 230 VAC
Short-circuit: protected
PCB type and size: FR4, single-side 35 μm, 32 x 90 mm
Isolation: isolated 4 kV / 8 mm