Alpha and Omega Semiconductor Introduces a 20V, 7A Type-C Sourcing Protection Switch Designed to Enhance USB Type-C Efficiency and Safety

Alpha and Omega Semiconductor Limited (AOS) (Nasdaq: AOSL), a designer, developer, and global supplier of a broad range of discrete power devices, wide band gap power devices, power management ICs, and modules, today announced the release of its AOZ1377DI Type-C Protection Switch. Designed to enhance USB Type-C efficiency and safety, these new protection Type-C switches have a current-limiting switch targeting applications that require comprehensive protections. AOZ1377DI boasts a unique feature supporting up to 7A with an input voltage of up to 20V input voltage, making it versatile for both Sink and Source applications.

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The advanced features of the AOZ1377DI capable to support up to 7A at max 23VIN and programmable current limit, and true reverse current blocking protection. (Graphic: Business Wire)

The AOZ1377DI offers advanced features that significantly reduce voltage drop and power loss compared to back-to-back p-channel devices typically used in such applications. The device supports an input operating voltage range of 3.4V to 23V, with both VIN and VOUT terminals rated at a maximum of 28V, and is capable of up to 7A. These devices are ideal for high-power applications requiring multi-port Type-C PD 3.0 current source supporting up to 100W. They are particularly well-suited for use in high-performance laptops, personal computers, monitors, docking stations, and other Type-C port applications.

The AOZ1377DI has a True Reverse Current Blocking (TRCB) protection, which prevents undesired reverse current from VOUT to VIN. It also features an internal current-limiting and short-circuit current limit that protects the source device from large load current. The current limit threshold can be set externally with a resistor. Furthermore, the integrated back-to-back MOSFET delivers the industry’s lowest ON resistance and highest SOA to safely handle high currents and a wide range of output capacitances on VOUT. An internal soft-start circuit controls inrush current from high capacitive loads, and an external capacitor can adjust the slew rate.