TPS54360: TPS54360DDA

Dong Nguyen Thanh

Part Number: TPS54360

HI TI

I layout to schematic datascheet
The problem is that when the load is used, the voltage drops. Imax < 20mA

You give me prize pphaps to overcome. Thanks !

over 4 years ago

0 Timothy Hegarty over 4 years ago

TI__Mastermind 49397 points

Hi Dong,

Please complete the TPS54360 design tool http://www.ti.com/product/TPS54360/toolssoftware#softTools to check that the component selection meets your design targets. Also, verify the saturation current of the inductor is greater than the current limit threshold of the TPS54360 (6.25A is the max spec).

If you still have an issue, you can send the design tool file and the PCB layout for review.

Regards,

Tim

0 Dong Nguyen Thanh over 4 years ago in reply to Timothy Hegarty

Intellectual 410 points

Hi TIM

I think it is in eco-mode . I use inductor 4A

Can you tell me more about eco-mode and PCB layout really affect. Thanks !

0 Timothy Hegarty over 4 years ago in reply to Dong Nguyen Thanh

TI__Mastermind 49397 points

Try connecting a ceramic cap from the VIN pin of the IC to the anode of D101. Also, it's better to use a > 6A rated inductor.

0 Dong Nguyen Thanh over 4 years ago in reply to Timothy Hegarty

Intellectual 410 points

Let me ask how to exit the eco-mode ?

0 Timothy Hegarty over 4 years ago in reply to Dong Nguyen Thanh

TI__Mastermind 49397 points

Hi Dong,

Increase output current or increase inductance to exit Eco mode.

Regards,

Tim

0 Dong Nguyen Thanh over 4 years ago in reply to Timothy Hegarty

Intellectual 410 points

Thank you for helping me

Currently with 9V 3A power supply, output 5V 0.86A
With 12V 3A give out 5V 1.3A
With 30V 3A, give 5V 2.7A
If my expectation is for 9V 3A, then I can output 5V 3A? In theory, this is possible. Is my power supply problematic

Thanks!

0 Timothy Hegarty over 4 years ago in reply to Dong Nguyen Thanh

TI__Mastermind 49397 points

Hi Dong,

I recommend changing to a 6A inductor to ensure that saturation does not occur. Try to match the design example in the datasheet (5V/3.5A) as closely as possible.

Regards,

Tim

0 Dong Nguyen Thanh over 4 years ago in reply to Timothy Hegarty

Intellectual 410 points

Dear TIM

It seems like my problem has been solved.
Now we can align this topic.

Thanks you

Power management

Power management forum

TPS54360: TPS54360DDA