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TPS62065: TPS62065/about mode pin

Tsukui Yusuke
Guru 21930 points
Part Number: TPS62065

Hi,

Could you tell me about TPS62065 mode pin in open condition?
In this case,How does it work?
Customers are concerned about the behavior when this pin is opened.

Best Regards,
Yusuke / Japan Disty

  • 0
    TI__Intellectual 2415 points
    Hi,
    MODE pin has to be terminated:

    MODE: MODE pin = High forces the device to operate in fixed frequency PWM mode.
    MODE pin = Low enables the power save mode with automatic transition from PFM mode to
    fixed frequency PWM mode. This pin must be terminated.

    Regards

    Lubomir
  • 0 in reply to Lubomir
    Guru 21930 points

    Lubomir-san,

    Thank you for your support.
    I understood your explanation.

    However,Customer want to know the behavior when it is unintentionally opened.
    Customer assumes a case where the pull-down resistor has come off.
    Could you give me your advice?

    Best Regards,
    Yusuke / Japan Disty

  • 0 in reply to Tsukui Yusuke
    TI__Intellectual 2415 points
    Hi Yusuke-san,

    there is no internal pull up or pull down resistor connected internally to MODE pin.
    If the MODE is open then the status for the MODE pin is not defined.
    TPS62065 can randomly change operation between PWM and PFM mode.

    There is no risk of damage.

    Best regards

    Lubomir