PCB Layout
11
SNVU620A – September 2018 – Revised April 2019
Copyright © 2018–2019, Texas Instruments Incorporated
LM5164-Q1 EVM User Guide
6
PCB Layout
through
show the board layout for the LM5164-Q1EVM-041. The EVM offers resistors,
capacitors, and test points to configure the output voltage, precision enable, and switching frequency.
The 8-pin SO PowerPAD™ package offers an exposed thermal pad, which must be soldered to the
copper landing on the PCB for optimal thermal performance. 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 under the thermal pad to connect to all four layers.
Test points have been provided for ease of use to connect the power supply, required load, and to monitor
critical signals. The 12-pin edge connector can also be used to facilitate the use of a cable harness if
required.
Figure 5. Top Layer and Silkscreen Layer
Figure 6. Mid-Layer 1 Ground Plane
