TPSM82821A: SW voltage

Dice-K

Part Number: TPSM82821A

Hi support team,

I don't think the TPSM8282x has a SW pin.
SLVSEP0F has a description of VSW in TEST CONDITIONS of Electrical Characteristics and SW waveforms.

Is there a way to observe the SW voltage?

Regards,
Dice-K

8 months ago

+1 Varun John 8 months ago

TI__Expert 8130 points

Hi Dice,

The inductor on top of the package has one terminal connected to SW and one to VOUT. You can probe the SW node by contacting the corresponding terminal of the inductor.

Best regards,

Varun

0 Dice-K 8 months ago in reply to Varun John

Genius 5440 points

Hi Varun,
Thank you for your reply.

Is the SW side of the inductor the 1-pin side of the TPSM8282x?

TPSM8282x_SW.pdf

Best regards,
Dice-K

+1 Varun John 8 months ago in reply to Dice-K

TI__Expert 8130 points

Hi Dice,

I believe SW should be the side next to pin 1.

Best regards,

Varun

0 Dice-K 8 months ago in reply to Varun John

Genius 5440 points

Hi Varun,
Thank you for your reply.

If you want to include VSW information in the data sheet, I think it is better to clearly describe the position of the SW node in the data sheet.

Best regards,
Dice-K

+1 Varun John 8 months ago in reply to Dice-K

TI__Expert 8130 points

Hi Dice,

Sorry for the inconvenience. The reason for not describing this is because, usually there is no need for customers to check this. And there is a risk of damaging the device trying to probe the SW node.

Best regards,

Varun

0 Dice-K 8 months ago in reply to Varun John

Genius 5440 points

Hi Varun,
Thank you for your answer.

What kind of damage can occur when probing the SW node?
I want to recognize it as a handling precaution.

Best regards,
Dice-K

+1 Varun John 8 months ago in reply to Dice-K

TI__Expert 8130 points

Hi Dice,

It's just a precaution against damaging the inductor or the substrate of the module by applying too much pressure with the needle tip of the probe.

Best regards,

Varun

Power management

Power management forum

TPSM82821A: SW voltage