Description
The STEVAL-ISA133V1 demonstration board implements a 7.5 W double output wide range mains adapter with constant-voltage/constantcurrent, designed as an innovative AC-DC adapter to supply a complete power line communication system based on the ST7580. The power supply provides a 13 V output voltage to supply the power line modem (PLM) and the analog circuitry, and a post-regulated 3.3 volts to supply digital circuitry and an optional external microcontroller. The STEVAL-ISA133V1 demonstration board uses the new ALTAIR04-900, a quasi-resonant (QR) current-mode controller IC specifically designed for QR ZVS (zero voltage switching at switch turn-on) flyback converters, which combines a high-performance low-voltage PWM controller chip and a typical 16 RDSon, 900 V, avalanche-rugged power MOSFET in the same

Features
■ Universal input mains range: 90 264 Vac - frequency 45 65 Hz
■ Double output voltage: 13V @ 0.55 A and 3.3 V @ 100 mA peak power
■ Optoless constant-voltage/constant-current output regulation
■ Meets power line communication system specifications with the ST7580
■ Average efficiency: > 70%
■ EMI: in accordance with EN55022-Class-B