TPS61030: TPS61030 - short between SW and GND

SEBA

Prodigy 110 points

Part Number: TPS61030

Hello,

my TPS61030 board generally working fine. (3.2V battery to 5V)

After some time of testing the board stops working, short between SW and GND.

I can not say exactly when it happens. My guess is that it happens i plug in the battery connector.

Battery is connected by 10cm of wires to the board.

Can you please check my layout?

over 5 years ago

0 Youhao Xi over 5 years ago

TI__Guru* 78080 points

Hi SEBA,

Thank you for designing the TPS61030. Our experts who support this device are currently on holidays. I am sending them a notice. Please wait until next Tuesday to get their advice.

Best Regards,

Youhao Xi, Applications Engineering

0 Jasper Li over 5 years ago

TI__Mastermind 46905 points

Hi SEBA,

The layout is not best optimized, but I can't say if the issue is caused by the layout, or not.

could you measure the VIN and VOUT pin voltage when the battery plug in to check if there is abnormal behavior?

also follow this AN to reduce the SW voltage spike http://www.ti.com/lit/an/slva255/slva255.pdf

0 Jasper Li over 5 years ago in reply to Jasper Li

TI__Mastermind 46905 points

Hi SEBA,

I closed the post as I though you had solved the issue. if not, just reply below

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TPS61030: TPS61030 - short between SW and GND