TPS54360B: VIN, SW and GND are short

kevin.huang_FJXM

Part Number: TPS54360B

When customers use tps54360dda, they find that VIN, SW and GND are short circuited together. What is the general reason for this?

over 4 years ago

0 Samuel Jaffe over 4 years ago

TI__Mastermind 25590 points

Kevin,

I assume the device becomes broken and results in a short between VIN, SW, and GND. Otherwise if the devices are tested from the tape/reel and are broken, please let me know.

Do any of the pins exceed their abs max ratings? I'd look mostly at VIN.

-Sam

0 Samuel Jaffe over 4 years ago in reply to Samuel Jaffe

TI__Mastermind 25590 points

Kevin,

I haven't heard back. I'll close this thread before it locks. Feel free to post again if you are still seeing issues.

-Sam

0 kevin.huang_FJXM over 4 years ago in reply to Samuel Jaffe

Expert 2925 points

hi Sam:

Sorry for the late reply!

The customer added TVs tube at the input, but the TVS tube was not protected

0 Samuel Jaffe over 4 years ago in reply to kevin.huang_FJXM

TI__Mastermind 25590 points

Kevin,

Understood. I assume they're protecting now and this issue is resolved.

-Sam

0 kevin.huang_FJXM over 4 years ago in reply to Samuel Jaffe

Expert 2925 points

hi Sam:

The customer means that even with TVS protection, the tps54360b will be damaged.

0 Samuel Jaffe over 4 years ago in reply to kevin.huang_FJXM

TI__Mastermind 25590 points

Kevin,

Have they checked that VIN is not exceeding the absolute maximum rating?

www.ti.com/.../tps54360b.pdf

-Sam

Power management

Power management forum

TPS54360B: VIN, SW and GND are short