ALPHA & OMEGA S E M I C O N D U C T O R AOZ7200CIDetailed Description The AOZ7200 with a low-voltage capacitor can drive There is a high voltage depletion MOSFET that could help to N-MOSFET to replace each diode in high-voltage bridge charge the Vcc capacitor. In normal operation, the charging rectifier application. In normal operation, after Vcc UVLO procedure happens at lower voltage drop and it helps to AOZ7200 will sense the voltage between Cathode and reduce the quiescent power. The value of Vcc capacitor is Anode, if this voltage is less than -105mV, the GATE will turn recommended larger than 1µF/25V for application. on internal MOSFET and the conduction loss is reduced. In the switch on-cycle, controller keeps to monitor this voltage, Start with general applications information. For example, when this voltage is larger than 1mV, the controller will turn- create paragraphs describing Input Capacitor, Output off switch. Capacitor, and/or Inductor followed by performance- related information. Always include the peculiarities of using the device. I A C D I _ + VC V A C VG V V C V A C VC V A C VC V C C VG V I Figure 8. Charging V CC D I Figure 7. V CA vs. Switch Gate Rev. 1.0 October 2020 www.aosmd.com Page 6 of 9
