DRV8313 EFT/Burst Test

Mehran

Part Number: DRV8313

Hello,

If we want to pass EFT/Burst tests do we need to put extra TVS diodes on the motor phases(Outputs of DRV8313)?

What is the proper TVS diode then? I can't find proper TVS diode suitable for 48V motor and clamps 65V.

Do we need to pass this standard tests when motor and driver are close to each other with short cables ? which protections should be considered with this chip?

Thanks in advance.

over 7 years ago

0 James Lockridge19 over 7 years ago

TI__Genius 14487 points

Hello Mehri,

I believe proper protection for EFT/burst tests should be put as close to the power input connector as possible. If you can clamp the burst before it enters your system, then the motor driver and motor may not need additional protection.

TI offers surge protection diodes for IEC 61000-4-5. I will contact them to see if they have any recommendations.

0 Cameron Phillips over 7 years ago in reply to James Lockridge19

TI__Genius 12410 points

Hello,
I apologize but we do not have a solution to sit on 48V lines.
However I will say you are correct that putting TVS diodes could protect for EFT however it may be difficult to find a device that has the EFT rating at such high a voltage rating. Not because they maybe couldn't pass it but because it is not commonly specced for TVS manufacturers.
Regards,
Cameron

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DRV8313 EFT/Burst Test