SBVU086 January   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 Before You Begin
  8. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Setup
    3. 2.3 Connector Information
      1. 2.3.1 VIN and GND
      2. 2.3.2 VOUT and GND
    4. 2.4 Jumper Information
      1. 2.4.1 J13 EN
      2. 2.4.2 J16
      3. 2.4.3 J19
      4. 2.4.4 J20
      5. 2.4.5 J22
      6. 2.4.6 J23
      7. 2.4.7 J24
      8. 2.4.8 J27
    5. 2.5 Test Points
      1. 2.5.1 TP1
      2. 2.5.2 TP2
      3. 2.5.3 TP3
    6. 2.6 TPS7B4261EVM-151 Operation and Component Selection
    7. 2.7 Optional Load Transient Circuit Operation
  9. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 Board Layout
    3. 3.3 Bill of Materials (BOM)
  10. 4Additional Information
    1. 4.1 Trademarks

3.2 Board Layout

Figure 3-2 through Figure 3-9 illustrate the board layout for the TPS7B4261EVM-151 PCB.

The TPS7B4261EVM-151 dissipates power, which can cause some components to experience an increase in temperature. The populated tracker LDO and pulsed resistors R10, R11, R12, R13, and R14 are most at risk of raising the junction temperature during normal operation. The LDO can become hot to the touch during normal operation; see the thermal impedance discussion in the TPS7B4261-Q1 data sheet.

TPS7B4261EVM-151 Top Assembly Layer and SilkscreenFigure 3-2 Top Assembly Layer and Silkscreen
TPS7B4261EVM-151 Internal Layer 1Figure 3-4 Internal Layer 1
TPS7B4261EVM-151 Internal Layer 3Figure 3-6 Internal Layer 3
TPS7B4261EVM-151 Bottom Layer RoutingFigure 3-8 Bottom Layer Routing
TPS7B4261EVM-151 Top Layer RoutingFigure 3-3 Top Layer Routing
TPS7B4261EVM-151 Internal Layer 2Figure 3-5 Internal Layer 2
TPS7B4261EVM-151 Internal Layer 4Figure 3-7 Internal Layer 4
TPS7B4261EVM-151 Bottom Assembly Layer and SilkscreenFigure 3-9 Bottom Assembly Layer and Silkscreen