Proper design and layout is crucial to the performance of the power supply. Here are
some suggestions to the layout of TPS5124 design:
- A four-layer PCB design is recommended for designs using the TPS5124. Use at
least one layer dedicated to the PWRGND plane.
- All sensitive analog components such as INV, REF, CT, GND, SCP, and SOFTSTART
should be reference to ANAGND.
- Ideally, all area directly under the TPS5124 chip should also be ANAGND.
- GND and PWRGND should be isolated as much as possible, with a single point
connection between them.