Texas Instruments TPS7B4255EVM-062, User Manual, Page: 10 / 20

4 Board Layout
Figure 4-1 through Figure 4-8 illustrate the board layout for the TPS7B4255EVM-062 PCB.
The TPS7B4255EVM-062 dissipates power, which may cause some components to experience an increase in
temperature. The TPS7B4255-Q1 LDO and pulsed resistors R9, R10, R11, R12, and R13 are most at risk of
raising the junction temperature during normal operation. The LDO may become hot to the touch during normal
operation; see the thermal impedance discussion in the TPS7B4255-Q1 data sheet.
Figure 4-1. Top Assembly Layer and Silkscreen
Figure 4-2. Top Layer Routing
Figure 4-3. Internal Layer 1
Figure 4-4. Internal Layer 2
Board Layout www.ti.com
10 TPS7B4255EVM-062 Evaluation Module SLVUCA5 – JUNE 2022
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