TAS2505EVM: Increasing the gap time between IOVDD and DVDD when powering up with USB input

R Z

Part Number: TAS2505EVM

Tool/software:

Dear TI experts,

Im currently having a project with TAS2505EVM where i need the gap time (tI-AD) of power up sequence between IOVDD and DVDD to be exactly look like in the datasheet. (Ref B.Details are in pictures below)

To clear the confusion here i attached the waveform the moment TAS2505EVM is powered up with USB input from the oscilloscope. (Ref A.Details are in the pictures below)

TAS2505EVM jumper settings are shown in the picture (Ref C)

Best regards

Ref A　↓

Ref B　↓

Ref C　↓

20 days ago

0 Ivan Salazar 19 days ago

TI__Guru** 102675 points

Hi,

What is your question?

Is the device operating correctly?

Best regards,
-Ivan Salazar
Applications Engineer

0 R Z 17 days ago in reply to Ivan Salazar

Prodigy 20 points

Hi Ivan,

Pardon me, I want the device powering sequence to be SPKVDD ー＞IOVDDー＞DVDD

Would you guide me on how to achieve this sequence by using USB input to power the device ?

My current setup shows that the powering sequence was SPKVDD ー＞DVDDー＞IOVDD.

Best regards,

0 Ramsey Foote 16 days ago in reply to R Z

TI__Expert 5705 points

Hi,

Our team has received your question. Responses may be a little slow due to the holiday season.

Thanks for your patience,

Ramsey

+1 Ivan Salazar 13 days ago in reply to Ramsey Foote

TI__Guru** 102675 points

Hi R Z,

The power sequence on the EVM is not adjustable, you can use external power supplies connected to the device on EVM to test with specific power sequences.

Best regards,
-Ivan Salazar
Applications Engineer

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TAS2505EVM: Increasing the gap time between IOVDD and DVDD when powering up with USB input