TPS62827: dynamic change voltage

Jeff YANG

Part Number: TPS62827
Other Parts Discussed in Thread: TPS62868, TPSM82866C

Tool/software:

Hi,

We want set 2 output voltage level 2.1V and 2.5V. We using N-MOS in parallel the resistor on FB pin, is it may have any side effect? thanks!

0 Jeff YANG 2 months ago

Hi Team,

Any feedback for this question? thanks!

+1 Chris Glaser 2 months ago in reply to Jeff YANG

Hi Jeff,

Friday was a public holiday, so we can reply to your question now.

Yes, you can do this. Usually, the resistor + transistor goes from the FB pin to GND instead. See figure 3 in this app note: https://www.ti.com/lit/an/slyt777/slyt777.pdf

We also have the TPS62868 or TPSM82866C, if you want to adjust Vout with I2C instead.

Thanks,

Chris

0 Jeff YANG 2 months ago in reply to Chris Glaser

Hi Chris,

Got it, thanks!

Jeff

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