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TPS53315: GND1 & GND2 pins

ADARSHA A N
Prodigy 245 points
Part Number: TPS53315

Hi,

could you please let me know for  GND1 pin of TPS53315 is there any consideration need to be taken in  schematic and layout  like separate signal gnd(analog gnd) ?

and is there any special consideration for GND2 pin?

thanks and regards

Adarsha A N

  • 0
    TI__Guru 56905 points

     

    The layout guidelines are section 10 of the datasheet.  Section 10.2 provides a diagram.

    Pin 4 (GND2) should be directly connected to the thermal pad and PGND pins (Pins 5-10)

    Pin 1 (GND1) should have a single point connection to PGND and the system ground.  The ground return path between the resistor divider ground (resistor from FB to GND) to the GND1 pin should not share high-current or high-speed return paths that could introduce noise into the regulation's ground.