TPS65100 Positve Output Voltgage is too high

Kurtlin

Other Parts Discussed in Thread: TPS65100

Hi all,

I use a TPS65100 for a LCD panel.

All the voltages have the values, they supposed to have.

Only the positive voltage (Vout3) is higher than expected. Also the Fb voltage (1.21V - datasheet) is higher -> 1.38 to 1.4 (spread of 5 PCBs).

There is no load on the outputs! res divider on V3 is 470k/27k.

Does the ref voltage Fb3 change if you load any of the outputs?

over 9 years ago

0 Bernard Keogh over 9 years ago

TI__Genius 9130 points

Kurtlin

I think you have posted your question to the wrong forum. It would be better to re-post your question in the Non-Isolated DC-DC forum where your question can be better answered:
e2e.ti.com/.../non-isolated_dcdc

Thanks,
Bernard

0 Ilona over 9 years ago

TI__Expert 8010 points

Hello Kurtlin,

This is the right Forum. What are the output voltages you want have? Can you share the schematic of your design?

Thank you,
Best Regards,
ilona

Power management

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TPS65100 Positve Output Voltgage is too high