12.1 Layout Guidelines
The layout guidelines are listed as follows.
- PBKG die substrate must connect to VN (–16 V) with short, wide trace. Wide copper trace improves heat dissipation.
- The PowerPAD is internally connected to PBKG and must be connected to ground, but connected to VN with a short, wide copper trace.
- Inductor traces must be kept on the PCB top layer free of any vias.
- Feedback traces must be routed away from any potential noise source to avoid coupling.
- Output caps must be placed immediately at output pin.
- VIN pins must be bypassed to ground with low-ESR ceramic bypass capacitors.