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TPS22918: TPS22918 open/short result

Hirotsugu Kobayashi
Mastermind 8485 points
Part Number: TPS22918

Hi, all.

Do you have any result of terminal open/short test for TPS22918?

The terminal open/short test is for checking whether the device causes any serious problem (Catching fire or smoke)  or not when the device any pin is opened or short between any two adjacent pins. 

Best Regards,

Kobayashi

  • 0
    TI__Genius 15710 points

    Hi Kobayashi,

    While we have not done any short/open tests between adjacent pins, having a short/open between any adjacent pins will not cause the device to smoke or catch fire.

    Thanks,

    Alek Kaknevicius

  • 0 in reply to Aleksandras_Kaknevicius
    Mastermind 8485 points

    Hello Alek,

    Apologies for the delayed response.

    A result of the adjacent pins were understood.
    Do you have any data pin to GND short test result and Pin open test result?

    Best Regards,

    Kobayashi

  • 0 in reply to Hirotsugu Kobayashi
    TI__Genius 15710 points

    Hi Kobayashi,

    Can you please clarify the meaning of "data pin"? If you are referring to the ON pin then shorting the pin to ground will not damage the device, it will only turn it off.

    Thanks,

    Alek Kaknevicius

  • 0 in reply to Aleksandras_Kaknevicius
    Mastermind 8485 points

    Hi Alek,

    I'm sorry that my sentences are strange.

    I want to know FMEA of TPS22918.

    1.Pin short-circuited to Ground.

    2.Pin short-circuite to an adjacent pin

    3.Pin is open-curcuited

    TPS22918 has not OCP and TSD, so if OUT is shoted to Ground, is it damaged?

  • 0 in reply to Hirotsugu Kobayashi
    TI__Genius 15710 points

    Hi Kobayashi,

    Thank you for the clarification. Please find the answers to your questions below:

    1. Ground is shorted to...

    1. VIN: The power supply is shorted but the device will not be damaged.
    2. VOUT: A high amount of current is put through the device and the device is damaged.
    3. ON: This will prevent the device from turning on but will not damage the device.
    4. CT: Grounding this pin may damage the device.
    5. QOD: Device functions normally with no damage to the device.

    2. Adjacent Pins (VIN to GND and ON to GND have already been discussed):

    1. VOUT to QOD: No issue, this will allow QOD on the output of the device.
    2. QOD to CT: Device may exhibit odd behavior and damage may occur.

    3. There is an open circuit on...

    1. VIN: With no power, the device will not pass through voltage to VOUT. No device damage.
    2. VOUT: No device damage, the output will not deliver power to the load.
    3. ON: No damage to the device, but the device will not be guaranteed to be on or off.
    4. CT: Floating this pin will quicken the rise time if a CT capacitor is attached.
    5. QOD: Device functions normally with no QOD on the output.

    Thanks,

    Alek Kaknevicius