TPS65217 unused DC/DC

thierry venet

Other Parts Discussed in Thread: TPS65217

Hello,

I want to use a TPS65217 for microcontroler supply, but it is not a AM335x, and I don't need all the DC/DC converter. Is it possible to let these pin not connected ?

For exemple, I need VDCDC2 (3.3V) but not VDCDC1 (1.8V), is it possible to put pin L1 and VDCDC1 not connected ?

Thanks for reply,

Thierry

over 12 years ago

0 Stephen Nortman over 12 years ago

TI__Expert 4525 points

Thierry,

DCDC1 is part of the power-up sequence. If it does not have a valid output voltage, the power-up will fail. Therefore the connection does need to be made.

Regards,

Stephen

0 thierry venet over 12 years ago in reply to Stephen Nortman

Intellectual 465 points

Thanks for reply Stephen,

I will connect it to a simple 10k resistor. I think It would be good to allow a good power up sequence.

thierry

Power management

Power management forum

TPS65217 unused DC/DC