TPS65262-2: Unused Output

Hi Thomas,

Thanks for reaching out. You can follow the guide as the original question, TPS65262-1 unused channel. 

Thanks!

BRs

Lucia

Thanks for the quick response.  

The TPS65262-2 does not have a comp 3 pin.  Can FB3 be tied to FB2?  

There is no SS3 pin.  Is there something else that needs to be done?

PVIN3 is already tied to the PVIN1 and PVIN2.  Does PVIN3 specifically need to float or can it be connected to the PVIN1 and PVIN2.

We use the TPS65262-1 part in another design that I had on hand.   I verified that the PGOOD signal goes high if I connect FB3 to FB2.  This was with the components on switcher 3 circuit removed and EN3 pin pulled up.  LX3 and BST3 were floating.

From the block diagram in the datasheet (same one for both -1 and -2 versions) , the ENX signals and the FBX signals are the inputs to the PGOOD functional block.  It seems to make sense this works. 

Could you please verify this is OK or if this will cause an issue with functionality?

Hi Darin,

My colleague will give you reply in next week!

BRs

Zixu

IF LDO2 or LDO1 is not used, how should the pins for respective LDO be connected?

Is the following acceptable?

LENX connected to GND

LVIN,LDOUT, LFBX are floating