The board includes an onboard VIPer25HD IC with a custom-designed, 800V rugged power MOSFET, current-mode PWM logic, and a zero current detection (ZCD) block for quasi-resonant operation.
The power MOSFET also integrates a high-voltage startup generator, allowing the IC to connect directly with input mains without requiring a resistor to reduce the voltage.
The VIPer25HD IC operates in quasi-resonant mode with valley switching, enabling low electromagnetic interference (EMI) emission and safe behavior in case of short circuit.
The IC features high-level protection including dual-level overcurrent protection, overvoltage and overload protections, hysteretic thermal protection, soft-start, and safe auto-restart after any fault-condition removal.
The STEVAL-ISA162V1 Evaluation Board can help reduce BOM costs and time-to-market when creating solutions such as power adapters for mobile devices, industrial power, and switched-mode power supplies (SMPS) for household appliances.