MSP430F5659: MSP430F5659 Failure Issue

Jaimanoj Jayaraman

Intellectual 570 points

Part Number: MSP430F5659

Hi TI team,

We are working on MSP430F5659 based controller with USB CDC application.

Our Product Details:

Micro-controller - MSP430F5659
Interface Used - USB CDC
USB Chip - TUSB4020BI

Our issue is at some point of time microcontroller(msp430f5659) is spoiling. It happened in three boards.

At this failure scenario DVCC to Ground is shorted.

It is very critical issue for us. We need your support on priority for this issue. If required we shall send 3 failed MCU for further investigation.

Please revert back on priority.

Thanks and Regards

Manoj

over 6 years ago

0 Yiding Luo over 6 years ago

TI__Expert 5490 points

Hello Manoj,

We will look into this issue for you.

Could you please provide more information on the issue?

Are you able to always reproduce the issue?
Do these three boards have anything particularly in common?
Could you please help to provide your MSP430 schematic in private message?

Thanks,

Yiding

0 Yiding Luo over 6 years ago

TI__Expert 5490 points

Hello Manoj,

I would like to help you find the root cause of the issue.

Anu update on those questions I posted last week?

Thanks,

Yiding

0 Jaimanoj Jayaraman over 6 years ago in reply to Yiding Luo

Intellectual 570 points

Hi Yiding,

Please find below the schematic for further analysis

<---MC Power supply schematic

Kindly revert back on priority

Thanks and Regards

Manoj

0 Yiding Luo over 6 years ago in reply to Jaimanoj Jayaraman

TI__Expert 5490 points

Hello Manoj,

I did not see anything on your schematic that jumps out on me for the root cause.

However, short DVCC to GND can defiantly damage the device permanently.

Thanks,

Yiding

I am booked Thursday and Friday lunch time. Does Wednesday work for you?

0 Jaimanoj Jayaraman over 6 years ago in reply to Yiding Luo

Intellectual 570 points

Hi Yiding,

You are asking for one to one discussion. If so please book some slot on next week. 15th/July or 16th/July.

Please let know if you have any concern.

Thanks and Regards

Manoj

0 Yiding Luo over 6 years ago in reply to Jaimanoj Jayaraman

TI__Expert 5490 points

Hello Manoj,

Are you still having this issue?

Like I mentioned in my lost post, shorting DVCC to GND can defiantly damage the device permanently. Could you avoid shorting DVCC to GND in the design?

Thanks,

Yiding

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MSP430F5659: MSP430F5659 Failure Issue