TPS25820: Circuit design, current output can't reach

Rhea Gao

Part Number: TPS25820

Tool/software:

Hi,

The customer circuit design is as follows, but only about 900m output current, measured whether the CHG end is 5V high level, not connected to 100k direct pull-up test, or only 900mA output.

Please help to see if there is any problem with the design, thank you ~

9 months ago

0 Tommy Lin 9 months ago

TI__Mastermind 31880 points

Hi,

May I know what is the end application?

Regards

0 Arabella Zhang 9 months ago in reply to Tommy Lin

TI__Intellectual 2930 points

E-Bike dashboard

0 Aya Khedr 9 months ago in reply to Arabella Zhang

TI__Mastermind 30342 points

Hi Arabella,

I don't see any obvious issues with the schematic.

What is the input supply current? Also, what is the sinking device being used?

Best Regards,

Aya Khedr

0 Arabella Zhang 9 months ago in reply to Aya Khedr

TI__Intellectual 2930 points

Hi Aya Khedr,

Thanks for your reply. The customer uses a 5V regulated voltage source for power supply. The current limit is 2A.

Many thanks,

Arabella

0 Aya Khedr 9 months ago in reply to Arabella Zhang

TI__Mastermind 30342 points

Hi Arabella,

What are the sinking devices used for testing? Do you observe the same behavior with multiple devices or a particular device?

Best Regards,

Aya Khedr

Power management

Power management forum

TPS25820: Circuit design, current output can't reach