UCD90160: UCD90160

Varshini BS

Prodigy 40 points

Part Number: UCD90160

Hi team,
Is there a register in UCD that can be used to reinitiate the power cycle?

7 months ago

0 yihe 7 months ago

TI__Guru 60800 points

Please refer section 10.15 of https://www.ti.com/lit/pdf/slvu352

Regards

Yihe

0 Varshini BS 7 months ago

Prodigy 40 points

Hi Yihe,

Thank you for your response. However, on writing into the aforementioned register, the rails are not turning back on even though their On Dependencies are being met.
We believe this is because each rail in our system has multiple On and Off dependencies. (The dependencies are imposed to make the system failproof in case of a short circuit event).
We want to re-sequence the rails with a “Time between Re-sequence” of 1s. We request your assistance regarding the same and if possible, we request for a brief call to debug the issue. Please find the .tifsp file attached.

UCD_R1_0.zip

Thanks and Regards,
Varshini BS

+1 yihe 7 months ago in reply to Varshini BS

TI__Guru 60800 points

The command shall work regardless the sequencing timing, but you have to ensure that all rails are below power good off threshold so that resequencing can start.

Regards

Yihe

0 Varshini BS 7 months ago in reply to yihe

Prodigy 40 points

Hi Yihe,
We have ensured that the power good off threshold is being met. However it is still not powering up after resequencing. It would be great if you are available for a quick call.

0 yihe 7 months ago in reply to Varshini BS

TI__Guru 60800 points

Please capture the waveform of all rails and share your project files.

Regards

Yihe

0 Varshini BS 7 months ago in reply to yihe

Prodigy 40 points

Hi Yihe,
We were able to resolve the issue. Thank you!

Power management

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UCD90160: UCD90160