TPSM82903: Schematic and PCB Review

En Dy

Prodigy 65 points

Part Number: TPSM82903

Tool/software:

Hi,

We intend to make an extremely compact 5V module for a nano-scale quad UAV.

Following are the parameters:

Input Voltage	2S LiHV battery 8.4V max
Output Voltage	5V
Output Current	2A nominal, 2.7A max
Cooling	Limited natural convection

For the same we designed with the aid of Power Designer:

- using VSet instead of FB

- No Vout discharge

- no PG

uBTIschValidation.pdf

Schematic File --^

uBallLayersPCB.pdf

PCB All Layers --^

uBindLayersPCB.pdf

PCB Individual Layers --^

3D View

Requesting any advice if something needs to be changed.

Thank you!

over 1 year ago

0 Lucia Gao over 1 year ago

TI__Mastermind 30641 points

Hello,

We will check and get back to you during these days.

Thanks!

BRs

Lucia

0 En Dy over 1 year ago in reply to Lucia Gao

Prodigy 65 points

Looking forward!

Best Regards

0 Colin Chen over 1 year ago in reply to En Dy

TI__Mastermind 21361 points

Hi,

I would say this is good design from my end.

But there is such circuit and looks no connection to our module. What is function you use it for?

Thanks

Colin

0 En Dy over 1 year ago in reply to Colin Chen

Prodigy 65 points

Hi Colin,

This is just a crude voltage sensor which our application requires to indicate the input voltage and use for battery SoC with a current sensor mounted elsewhere in the system. As correctly pointed out, this is independent of the step down module.

Thank you for your review!

+1 Colin Chen over 1 year ago in reply to En Dy

TI__Mastermind 21361 points

Got you. This is fine!

Thanks,

Colin

Power management

Power management forum

TPSM82903: Schematic and PCB Review