Hello,
I am currently designing power circuitry using LM26480-Q1 and I have question regarding the GND separation for this chip.
As this chip has pin for core ground (GND_C) , LDO ground (GND_L) , and switching GND (GND_SW1, GND_SW2), what is the advised GND connection for this chip? Should I just separate the LDO circuit GND and buck circuit GND , then tie together with a net tie at a single point? Or should I just use this GND_L for low noise GND for LDO feedback , core GND for low noise GND for buck feedback, and rest tied to the SW GND?
Sincerely ,
Tsugumi