STEVAL-ISA081V1: 12V @ 1A, 3.3V @ 100mA, 85 ~ 305Vin

(From User Guide) The purpose of this document is to provide information on the STEVAL-ISA081V1 switched mode power supply (SMPS) demonstration board. The STEVAL-ISA081V1 is an isolated SMPS capable of delivering a 12 W output over a wide input voltage range. It is designed for a mains application focused on providing a cost-effective and space-saving solution.

The STEVAL-ISA081V1 SMPS generates 12 V nominal output voltage using primary regulation. This board is based on VIPer™26LD - a monolithic converter integrating a high voltage MOSFET and PWM controller in one package.

This document contains a fundamental technical description of the demonstration board (schematic diagram, PCB details, and bill of materials) as well as basic measurements (load regulation, efficiency, standby behavior, EMI and thermal behavior data).

The last section of this document contains short recommendations on how to set different output voltages in the range of 10 V - 18 V and how to improve efficiency up to 86%.