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

6.6 Sub Schematic – HUB

This schematic is SS4 sub-schematic of the main schematic. Figure 6-9 shows the HUB circuit of TPS25762Q1EVM-146 and TPS25772Q1EVM-149. R141 is installed and R142 is not installed to disable the USB mux(U12). As Figure 6-9 shows, the DP/DM of Type-C connector are not connected to HUB, so there is no data connection from the USB micro-B connector(J16) to port A and port B on the TPS25762Q1EVM-146 and TPS25772Q1EVM-149.

Figure 6-10 shows the HUB circuit of TPS25772Q1EVM-150. R142 is installed and R141 is not installed to enable the USB mux(U12). Using pins 15 and 16 of J7 on Figure 6-6 to set USB_SEL can select DP/DM of Type-C connector to HUB or to TPS25762/72-Q1. The USB_SEL is pulled low by default, so the data lines are connected from USB micro-B connector to the Type-C connectors of port A and port B. When pins 15 and 16 of J7 are shorted, the TPS25762/72-Q1 is configured as firmware update mode, the USB mux will connect DP/DM from the Type-C connector to TPS25762/72-Q1.

The HUB IC(U13) also provides a data path from USB micro-B connector to TIVA. This allows configuration, monitoring, and firmware update through USB micro-B connector.

Figure 6-9 TPS25762Q1EVM-146 and TPS25772Q1EVM-149 HUB Circuit
Figure 6-10 TPS25772Q1EVM-150 HUB Circuit