TPS65265: TPS65265RHBR

Karthikeya RAM

Part Number: TPS65265

Hello,

I am using "TPS65265RHBR" Buck Switching Regulator with 3 channels.

The first channel (LX1) was given to 1.8V. (max current requirement is 600mA.)
The second channel (LX2) is given to 1.5V. (max current required is 100mA.)
Third Channel (LX3) given to 1.1V. (Max current required is 100mA.)

But when i connect to load device 1.8V (LX1) is raising to 2V.
it should be 1.8V actually but it raising to 2V.

Can someone be given suggestions on how to solve this issue?

Regards

NIKHIL

over 3 years ago

0 Karthikeya RAM over 3 years ago

Prodigy 70 points

with out load, IC generates 1.8V but when the load is applied then voltage increase from 1.8v to 2v.

This is the issue which i get .

please give some suggestions to solve the issue.

0 Ruby Li over 3 years ago

TI__Expert 7430 points

Hi Nikhil

Is the stable voltage with load 2V or the transient voltage can up to 2V? Would you please share the waveform of your test? Thanks.

Ruby

0 Zhao Ma over 3 years ago

TI__Genius 15135 points

Hi, Nikhil

Some comments:

1. Where did you measure the Vout voltage? did you measure the Vout at Cout C13 or C14?

2. Could you send us the layout files? i want to check the FBx signal trace.

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TPS65265: TPS65265RHBR