5 Board Layout

Figure 5-1 through Figure 5-6 show the board layout for the LMR51450 EVM. The EVM offers resistors, capacitors, and test points to configure the following:

• Output voltage
• Precision enable
• Set frequency

The 12-pin WSON package offers a very small solution size. The PCB consists of a 4-layer design. There are 2-oz copper planes on the top and bottom and 1-oz copper mid-layer planes to dissipate heat with an array of thermal vias to connect to all four layers.

Test points have been provided for ease of use to connect the power supply and required load, and to monitor critical signals.

Figure 5-1 Top 3D View

Figure 5-3 Signal Layer 1 - Ground Plane

Figure 5-5 Bottom Layer

Figure 5-2 Top Layer

Figure 5-4 Signal Layer 2 - Routing

Figure 5-6 Bottom 3D view