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TUSB3410: USB disconnect detection

IlyaChepurin
Expert 4200 points
Part Number: TUSB3410

Hello,

Is it possible for TUSB3410 to detect when USB is disconnected?

Our customer has the issue when they power application from the battery and initialize UART on external MCU TUSB3410 gets powered as TX pin goes high. It prevents the system to go to the power saving mode and the system continues to draw the battery. So the question is how to detect that USB gets disconnected?

Best regards,

Ilya

  • 0
    TI__Genius 11255 points
    Hello Ilya,

    Could you please elaborate a little more how your system is implemented?

    If you want to detect when the USB port is disconnected you can just monitor VBUS and detect when it comes down, so it means the USB port has been disconnected.

    The other option is that you can power the TUSB3410 by VBUS instead an external power supply, so every time the USB gets disconnected the TUSB3410 will be power down.

    Regards, Roberto