TPS62140: Feedback Circuitry

William Sung36

Part Number: TPS62140
Other Parts Discussed in Thread: TPS62147

Hi,

I would like to be able to adjust the voltage of the TPS62140 during operation, can this be done with either of the following methods:

1 - Adding Mosfet to switch in resistors on the Feedback circuitry

2 - Adding a digtial pot on in parrallel with one of the feeback resistors

Thanks

over 7 years ago

0 William Sung36 over 7 years ago

Intellectual 395 points

Or can i just use a digtial pot as one of the feedback resistors, and set the value in the digital pot and then turn on the device?

0 Chris Glaser over 7 years ago in reply to William Sung36

TI__Guru**** 150770 points

Hi William,

Yes, you can do any of those methods. But please also take a look at the new TPS62147/8, which integrate a VSEL function to do digital voltage changes between 2 voltages. It is also smaller, more accurate, and with more features.

0 William Sung36 over 7 years ago in reply to Chris Glaser

Intellectual 395 points

Thank you for the input

0 William Sung36 over 7 years ago in reply to William Sung36

Intellectual 395 points

thanks

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TPS62140: Feedback Circuitry