TPS2663: NC Pin on EVM

Cameron Perl

Part Number: TPS2663

Hey team on the TPS26630-33EVM we connect pin 24 (NC) to Vin, but all the other NCs are being connected to ground. As per the related post I see that these pins can be connected to either side (in / out), but was curious why you would connected one to Vin instead of tying them all together. Was this mainly due to some odd board constraint / spacing requirement?

Thanks!

over 3 years ago

0 Rakesh over 3 years ago

TI__Guru* 95911 points

Hi Cameron,

We connected rest of the pins to GND so that the ground plane under the thermal pad can be extended on the top layer. This way it will be more effective in improving the thermal relief to the device than connecting all the pins to Vin.

Best Regards, Rakesh