TPS51388: What is BFG pin used in TPS51388

Wei Ying Wu

Part Number: TPS51388

Tool/software:

Hi Team

in Table 4-1. Pin Functions, FBG pin mentioned "Ground of internal analog circuitry. Decouple this pin to ground with a 4.7μF ceramic capacitor or leave the pin floating. Connect to Rfb_low if wanting to improve load transient performance."

in reference design, FBG directly connected to GND without 4.7uF.
In schematics design, should we need to reserved anything? or just follow reference design connected to GND?

BR
Ethan

5 months ago

0 Aurora Tie 5 months ago

TI__Genius 16830 points

Hi Ethan,

Actually, both designs are ok. If you want to simplify the design, you can directly connect FBG to GND. If you need bom to bom design with SY8370 and improve load transient performance, pls connect FBG to GND with a 4.7uF capacitor. Because FBG pin is connect to GND internally, so leave it floating is also ok.

Hope this is clear. Thanks.

Aurora