EG7500 Inverter Preamp Step Up Power Switch Driver Board Compatible With KA7500 TL494  Parameter:  1. PWM frequency is 40KHZ、 with a !#!amp!*!plusmn; 1A output current drive capability 2. Overvoltage shutdown!#!amp!*!gt; 15V !#!amp!*!plusmn; 0.5V 3. Undervoltage buzzer !#!amp!*!lt;10.5V !#!amp!*!plusmn; 0.5V 4. Undervoltage shutdown !#!amp!*!lt;9.5V !#!amp!*!plusmn; 0.5V 5. Overcurrent shutdown IFB feet !#!amp!*!gt; 48mV 6. PCB Material: FR-4、 thickness: 1.5mm 7. Size: 46mm x 32mm (length x width) 8. The panel parts maximum height: 9mm  Pin Function Description:  1. Temperature 2. Undervoltage\/high and low voltage buzzer 3. VCC + 12V(high and low voltage sampling feet) 4. Fan Control 5. VFB(low voltage feedback pin、5V below can work on the protection of high 5V) 6. GND 7. +12V (the IC supply pin) 8~9. Drive output 10. IFB mos Rds pipe detection、 overcurrent detection  Note:  Over current protection is with the mos tube that 8~9pin drives、  it will not start up if connect incorrectly  Package included:  1 x Switch Driver Board