Guangzhou Boju Information Technology Co., Ltd.

Mass Power Electronics Inc.

Wanxiong Chen

Zhuo Jia

Xiaosheng Zheng

Zanxing Luo

The present disclosure discloses an anti-backflow output switch, a collector of the tertiary tube Qis connected to the source of the MOS tube Qthrough a resistor Rand a diode ZD, a resistor Ris connected between the source and the gate of the MOS tube Q, the drain of the MOS tube Qis connected to the drain of the MOS tube Q, a resistor Rand a diode Dare connected to the gate of the MOS tube Q, a resistor Ris connected between the gate and the source of the MOS tube Q, a resistor Ris connected between the drain of the MOS tube Q, a resistor Ris connected between the gate and the source of the MOS tube Q, the gate of the MOS tube Qis connected to a first pin of the chip Uthrough a resistor R, a resistor Rand a resistor Rare connected to the second pin and the third pin of the chip Urespectively, a resistor Rand a capacitor Care connected between the first pin and the second pin of the chip U, the second pin of the chip Uis connected to a fourth pin of the chip Uthrough the capacitor Cand the diode D, and the resistor Ris connected to the resistor R. The advantage of the present disclosure is that the backflow problem is quickly detected and quickly blocked by using a common comparator circuit.

Growing community of inventors

Dongguan, China

Wanxiong Chen