TPIC2810 Inductive driver

N Brooks

Other Parts Discussed in Thread: TPIC2810, TPIC6595

Hi, we've been using TPIC6595 etc for driving motors and coils for some time, but we want to use I2C now. We've seen the TPIC2810, but this specifically says "not recommended for switching inductive loads". Can someone please explain why ? The outputs are still diode protected, and appear to be the same, apart from the 100mA rating (more than enough) compared to 250mA. If there is a good reason, is there another I2C part that is suitable ? We're looking at driving small stepper motors (28BYJ-48).

Thanks

Nigel

over 9 years ago

0 James Lockridge19 over 9 years ago

TI__Genius 14485 points

Moved to automotive forum for better support.

0 N Brooks over 9 years ago in reply to James Lockridge19

Prodigy 30 points

Can someone from TI not just answer this ? Who wrote the datasheet ?

0 Anda Zhang over 9 years ago

TI__Expert 5380 points

Nigel,

I think you can try the TPIC2810, as there is free-wheel pass when driving the uni-polar stepper. What is the operation current and voltage for the stepper? We don't have any other I2C similar part now. For the reason "not recommended for switching inductive loads", i need to check it with the original design team. I'll give you feedback with a couple of days.

0 N Brooks over 9 years ago in reply to Anda Zhang

Prodigy 30 points

Hi Anda,

many thanks if you can check this out. We've already tried it out, running at 5v, the coils are listed as 50r, haven't checked the current, seems ok, and stable under load, but would like to check if we need extra diode protection, or if the internal is sufficient. If you can check with the original team, that would be great.

Cheers

Nigel

Automotive (Read-Only)

Automotive Forum (Read-Only)

TPIC2810 Inductive driver