Introducing the 23V 7A USB Type-C Source Protection Switch

Alpha and Omega Semiconductor has recently unveiled a cutting-edge 7A 23V USB Type-C protection and reverse-blocking switch IC, known as the AOZ1377DI. This innovative component is designed to cater to both Sink and Source applications, offering advanced features that aim to minimize voltage drop and power loss in comparison to traditional back-to-back p-channel devices.

The AOZ1377DI distinguishes itself by utilizing a pair of internal drain-to-drain n-channel MOSFETs, with their gates being powered by a charge pump to a voltage exceeding the positive input or output rail. This unique configuration allows the IC to support inputs ranging from 3.4 to 23V, providing comprehensive protection for both input and output voltages up to 28V.

According to the company, this state-of-the-art device is particularly well-suited for multi-port Type-C PD 3.0 current sources that can deliver up to 100W of power. Potential applications include laptops, monitors, and docking stations, highlighting the versatility and broad utility of the AOZ1377DI in various electronic setups.

One of the standout features of the AOZ1377DI is its integrated reverse current blocking mechanism, which triggers when the output voltage surpasses the input by 30mV. With a rapid trip time of just 1µs at a 30+500mV difference, this safeguard ensures efficient and reliable operation under diverse conditions.

Moreover, the IC incorporates an output enable input and boasts low power consumption of 3μA when disabled. It also offers resistor-programmable input over-voltage protection to safeguard against excessive input voltages, provided the 23V input limit is not breached.