1. Purpose: suitable for DC-DC-AC two-stage power conversion architecture or DC-AC single-stage industrial frequency transformer boost converter 2. Frequency: 23.4KHz 3. External 12MHz crystal oscillator, can realize 50Hz or 60Hz pure sinusoidal inverter chip, with high precision, anti-interference and harmonic 4. CMOS technology, integrated SPWM sine generator, dead time control circuit, amplitude factor multiplier, soft start circuit, protection circuit, RS232 serial communication interface and 12832 serial LCD driver module 5. Unipolar and bipolar modulation, real-time processing of voltage, current, temperature feedback 6. With deadband control, the pin can be set to 4 deadband 7. Pin setting soft start mode 1S response time 8. Serial communication to set the output voltage, frequency and other parameters