DRV8424: DRV8424RGE BOUT1 (No.6) pin soldering is melted.

Kazuya Nakai59

Part Number: DRV8424

Tool/software:

Hello guys,

One of my customers faces DRV8424RGE trouble.

The trouble is that the solder on the BOUT1 pin (No.6) is melted sometimes when a specific motor is connected to DRV8424.
But DRV8424 is not broken. DRV8424 is work well after re-soldering between BOUT1 pin and PCB pattern

At this moment, they have the following questions.
Could you please give me your reply?

Q1.
Have you ever seen or heard the phenomenon?

Q2.
They checked the BOUT1 pin voltage when DRV8424 is driving the motor.
Then they found that BOUT1 voltage was less than -1V or more than VM+1V during 400~500ns.
Is there any possibility BOUT1 pin solder melting in case of the situation above?

Best regards,
Kazuya.

over 1 year ago

0 Keerthivasan Kumanan over 1 year ago

TI__Mastermind 18865 points

Hi Nakai-san,

Give me till tomorrow to look into this and respond to you.

Best,

Keerthi

0 Kazuya Nakai59 over 1 year ago in reply to Keerthivasan Kumanan

Guru 21645 points

Hi Keerthi,

Thank you very much for your reply.

I see. I'm looking forward to receiving your tomorrow reply.

Thank you again and best regards,
Kazuya.

0 Keerthivasan Kumanan over 1 year ago in reply to Kazuya Nakai59

TI__Mastermind 18865 points

Hello Nakai,

Are they seeing on this on an EVM or their own board?

Do they have the power pad soldered down?

How much current are they driving and for how long?

Can you tell me what application this is for?

Best,

Keerthi

0 Kazuya Nakai59 over 1 year ago in reply to Keerthivasan Kumanan

Guru 21645 points

Hello Keerthi,

Thank you very much for your reply.

I have some information about the problem.
But the customer doesn't want to disclose the information on E2E.

So could you please give me your e-mail address. I'd like to send the information to you directly by e-mail.

Thank you again and best regards,
Kazuya.

0 Keerthivasan Kumanan over 1 year ago in reply to Kazuya Nakai59

TI__Mastermind 18865 points

I have sent a message

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DRV8424: DRV8424RGE BOUT1 (No.6) pin soldering is melted.