TLC3702: Operating problem according to temperature

Cecilia CLEMENT

Prodigy 30 points

Part Number: TLC3702

Hi, we integrated for 5 years now TLC3702 ID on a board.

If ambiant temperature is lower than -15°C, the component has power supply oscillation current.

Have you ever seen this perturbation? Could you contact us?

Best regards

C CLEMENT

over 6 years ago

0 Chuck Sins over 6 years ago

TI__Mastermind 27690 points

Cecilia

This is not a know problem for the TLC3702, however, it is know that supply current increases at colder temperatures. Can you share a schematic of your design including your power supply circuit? You also asked if we could contact you. Do you have a TI Representative that serves your company? If so, please reach out to them directly.

In the meantime, are you seeing this problem on all newer TLC3702's or only on one or two boards? Also, have you done any troubleshooting such as replacing the device that is failing with a part that is performing correctly to make sure the problem is device related. Another option would be to power the device from an external bench power supply.

Chuck

0 kai klaas69 over 6 years ago

Guru 140200 points

Hi Cecilia,

sounds interesting! Can you show a scope plot?

Kai

0 Chuck Sins over 6 years ago in reply to kai klaas69

TI__Mastermind 27690 points

Cecilia

Do you have any additional information that you can share?

Chuck

0 Cecilia CLEMENT over 6 years ago in reply to Chuck Sins

Prodigy 30 points

Hi Chuck,

Do you have a secure email?

We would like to share diffrents informations with you but it must be on a secure exchange.

Thanks

0 kai klaas69 over 6 years ago in reply to Cecilia CLEMENT

Guru 140200 points

Hi Cecillia,

can you at least publish a sope plot? I'm very curious...

Kai

0 Chuck Sins over 6 years ago in reply to kai klaas69

TI__Mastermind 27690 points

Cecillia

Friend request has been sent.

Chuck

0 Chuck Sins over 6 years ago in reply to Chuck Sins

TI__Mastermind 27690 points

We have not received a response on this thread in a while, so I will be closing the thread. If you need further assistance, feel free to to reply or open a new thread.

Thanks,

Chuck