TPS22959: Motor starting current

kouki

Part Number: TPS22959

Hello,

I am looking for a switch circuit to commutate between 2 module of current sensing.

my application has a nominal current of 5A and a strating peak current of 55A.

I have chosen the TPS22959 because it support until 15A with un ultra low Ron. but the big problem is in the starting current, the TPS22959 support only until 17A.

is there an other switch circuit at Texas Instruments which can support my starting peak curent of 55A.?

Thank you!

over 7 years ago

0 Aleksandras_Kaknevicius over 7 years ago

TI__Genius 15780 points

Hi Kouki,

The TPS22959 is not designed for such high startup currents, and we do not have any switches that can support 55A continuously. We may be able to offer you a different type of switch for your application, but I'd like to know a bit more about the expected startup profile. How long is the switch expected to pass through 55A? Any scope shot of the startup behavior would be helpful here.

Thanks,

Alek Kaknevicius

0 kouki over 7 years ago in reply to Aleksandras_Kaknevicius

Prodigy 170 points

Hello,

The 55A isn't a continuously current, it's the starting current of my motor.
The duration of 55A starting peak current is arround 200ms, then the nominal current 5A, so the switch will support 55A during 200ms than 5 A continuously.

Thank you,

0 Aleksandras_Kaknevicius over 7 years ago in reply to kouki

TI__Genius 15780 points

Hi Kouki,

As of right now, we do not have a switch that can support this high startup current profile.

Thanks,

Alek Kaknevicius

Power management

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TPS22959: Motor starting current