SLVUC03 November   2022 TPS25762-Q1 , TPS25772-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1About this Manual
  4. 2Information About Cautions and Warnings
  5. 3Items Required for Operation
  6. 4Introduction
  7. 5Setup
    1. 5.1 Switch, Push Button, Connector, and Test Points Descriptions
    2. 5.2 Jumper Configuration
  8. 6Schematics
    1. 6.1 Main Schematic
    2. 6.2 Sub Schematic – Input Circuit
    3. 6.3 Sub Schematic – Auxiliary Power
    4. 6.4 Sub Schematic – I2C Peripherals
    5. 6.5 Sub Schematic – TPS55288-Q1
    6. 6.6 Sub Schematic – HUB
    7. 6.7 Sub Schematic – TIVA
    8. 6.8 Sub Schematic – ESD
  9. 7 Board Views and Layout Prints
  10. 8Bill of Materials

6.3 Sub Schematic – Auxiliary Power

This schematic is SS1 sub-schematic of the main schematic. Figure 6-5 shows the auxiliary power supply circuit. U7 provides the 5-V power for VCONN and LDO input of U8 and U9. U8 and U9 provide 3.3-V power and 1.1-V power for peripherals like TIVA, HUB, IO expander, I2C temperature sensor, USB mux, and digital potentiometer.

Figure 6-5 Auxiliary Power