Description
This evaluation board is a 3-phase auxiliary power supply with an 80 W dual output SMPS, using the L6565 PWM driver and the STC04IE170HV ESBT as the main switch. The combination of these ST devices provides a high-efficiency solution for high DC input voltage, a typical requirement for any three-phase application. The necessity to handle both high output power and wide input voltage is satisfied using a flyback stage working in mixed operation mode: discontinuous and continuous. STEVAL-ISA019V1

Features
■ 3-phase 80 W auxiliary output SMPS
■ Quasi-resonant SMPS
■ Input: 180 VAC 600 VAC
■ Output voltage 24 V, 3.3 A
■ Maximum output power 80 W
■ Efficiency > 80%
■ Switching frequency > 50 kHz
■ Safety compliant according EN60950
■ Feedback: secondary regulation