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Original question:

TPS61022: IC burned at around 3A output

TPS61022: Intermittent failure . Component smokes.

Jonathan Pinson
Prodigy 45 points

Part Number: TPS61022

We are having an issue with the TPS61022 with intermittent failure of TPS61022 (U2) being charged by various USB style chargers. Do you think we need diode to pre-bias the voltage? Or is it layout or parts selection problem? 

Thank you!

  • 0
    TI__Guru* 79815 points

    Hi Jonathan,

    Thank you for using our device in your application.  The experts of this IC is currently on CNY holidays and they will return to work next week. Please wait for a few days to get their support.

    Thanks,

    Youhao 

  • 0
    TI__Genius 9046 points

    Hi Jonathan,

    Thanks for reaching out. Please pre-bias output before you power up the device. You can refer to datasheet 8.3 for reference. For layout. I recommend you strictly refer to datasheet layout recommendation. You have your output capacitor far away from VOUT pin. This is not good. The cross-connection on capacitor's GND lead is not recommended. This will rise the parasitic into VOUT loop.

    -Wenhao