The demo board is designed for isolated 24 V, 5 V, and 3.3 V AC/DC SMPS, delivering up to 5 W to the load. On the input side, a single-phase, 2-phase or 3-phase universal power supply can be connected. The switch-mode converter operates in flyback mode with a maximum frequency of approximately 50 kHz. Built-in overcurrent and short circuit protection. Power consumption is less than 50 mW under no-load conditions. EMI filtering and surge protection using TVS diodes are implemented in this circuit. This application is intended for use as a three-phase low power SMPS and is particularly suitable for three-phase industrial and multi-phase electronic metering SMPS applications.
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