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New USB Type-C Switch Enhances Safety and Efficiency

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April 15, 2024

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The USB Type-C protection switches have evolved to meet the demands of modern applications that require comprehensive protections. One such innovative switch is the AOZ1377DI, which stands out with its current-limiting feature designed to cater to a wide range of needs. This particular switch is capable of supporting up to 7 A with an input voltage of up to 20 V, making it a versatile choice for both Sink and Source applications.

When it comes to efficiency and performance, the AOZ1377DI USB Type-C protection switch excels in comparison to traditional back-to-back p-channel devices commonly used in similar applications. By significantly reducing voltage drop and power loss, this device offers advanced features that enhance overall functionality. With an input operating voltage range spanning from 3.4 V to 23 V, and both VIN and VOUT terminals rated at a maximum of 28 V, the AOZ1377DI is a robust solution capable of handling up to 7 A.

For high-power applications that demand a reliable power source, the AOZ1377DI is an ideal choice. It is particularly well-suited for multi-port Type-C PD 3.0 current source applications that support up to 100 W. Whether it's high-performance laptops, personal computers, monitors, docking stations, or other Type-C port applications, these devices offer the performance and protection needed for seamless operation.

One standout feature of the AOZ1377DI is its True Reverse Current Blocking (TRCB) protection, which effectively prevents undesired reverse current flow from VOUT to VIN. Additionally, the device incorporates internal current-limiting and short-circuit current limit mechanisms that safeguard the source device from excessive load current. The flexibility to set the current limit threshold externally using a resistor adds to the device's versatility.

Moreover, the integrated back-to-back MOSFET in the AOZ1377DI ensures the lowest ON resistance in the industry, along with the highest Safe Operating Area (SOA) to handle high currents and a wide range of output capacitances on VOUT. The device's internal soft-start circuit manages inrush current from high capacitive loads, while an external capacitor can be used to adjust the slew rate, further enhancing control and performance.

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