Custom Corrected pure sine wave inverter small board driver board

Instructions for the pins of the KA7500 small board during normal operation:

1. temperature

2. Under voltage/high voltage buzzing

3. VCC+12V (high and low voltage sampling pins)

4. Fan control

5. VFB (high voltage feedback pin, can work below 5V, protected above 5V)

6. GND

7+ 12V (IC power supply pin)

8-9. Drive output terminal

10. IFB MOSFET Rds detection, overcurrent protection detection

The overcurrent protection follows the MOS transistor driven by pins 8-9, and if connected incorrectly, it will not be able to power on

Is the simple trial board working properly

1 connected to 12V

2 empty

3 connected to 12V

4 empty

5 Grounding

6 places

7 connected to 12V

8 and 9 can work at around 5V

10 Grounding