• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 200 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS25730: Question about PLUG_EVENT

JAEHO CHOI
Prodigy 160 points

Part Number: TPS25730

Hello I'm Jaeho

I have som Question about PLUG_EVENT

If only VBUS power is applied to the IC and CC1 and CC2 are not connected,

How does PLUG_EVENT Level?
ex) High?? or Low??

  • 0
    TI__Mastermind 36042 points

    Hi Jaeho, 

    Thank you for reaching out!

    How is VBUS being applied to the IC without a cable being present? 

    Best Regards, 

    Aya Khedr 

  • 0 in reply to Aya Khedr
    Prodigy 160 points

    Only DC voltage is applied to VBUS.

    When it's a non-PD condition, I would like to know the level of PLUG_EVENT and SINK_EN pins.

  • 0 in reply to JAEHO CHOI
    TI__Mastermind 36042 points

    Hi Jaeho, 

    The TPS25730 is a USB Type-C PD Controller, so it does not treat VBUS as a generic power input. Instead, VBUS is expected to be provided by a compliant Type-C or PD Source. Hot-plugging VBUS directly from an external DC/DC supply bypasses the Type-C PD protocol (For example, CC detection,  which includes plug detection and orientation).

    Could you elaborate on the use-case and why VBUS is being provided externally from DCDC? If you are looking for a way to keep the TPS25730 powered in the absence of VBUS, VIN3V3 would be the main power supply input. 

    Best Regards, 

    Aya Khedr 

  • 0 in reply to Aya Khedr
    Prodigy 160 points

    Hello. Thanks for your help.

    There are two input sources in our Design concept.
    No1 ) DC-DC Power (5V / 12V)
    No.2) TA Chargers

    So in the case of No. 1,
    I would like to know the level of PLUG_EVENT and SINK_EN pins.

    Because we want to control the external circuit with that signal.

  • 0 in reply to JAEHO CHOI
    TI__Mastermind 36042 points

    Hi Jaeho,

    In the first case, the TPS25730 will not detect a valid Type-C connection. PLUG_EVENT will be low and SINK_EN\ will be high indicating that the power path is disabled. 

    Best Regards, 

    Aya Khedr