SLVUBX5B August   2023  – February 2024 TPS25762-Q1 , TPS25772-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Getting Started
    1. 2.1 Related Documents
    2. 2.2 Hardware
    3. 2.3 Software
    4. 2.4 GUI Installation and Launch
  6. 3Application Configuration Overview
    1. 3.1 Creating a New Application Configuration
    2. 3.2 Loading a Saved Configuration
  7. 4Configuration Parameters
    1. 4.1 USB Port Configuration Module
    2. 4.2 I2C Configuration
    3. 4.3 Internal DCDC
    4. 4.4 GPIO Configuration
    5. 4.5 External DCDC
    6. 4.6 System Configuration
      1. 4.6.1 System Power Management
      2. 4.6.2 Device IDs
      3. 4.6.3 Thermal Foldback
      4. 4.6.4 VIN Engine On or Off
    7. 4.7 Advanced Configuration
  8. 5Application Configuration Download
    1. 5.1 Firmware Download Procedure
      1. 5.1.1 Key Upload and Binary File Generation
        1. 5.1.1.1 Firmware Update: USB Endpoint
        2. 5.1.1.2 Firmware Update: I2C
    2. 5.2 Secure Firmware Update
    3. 5.3 Optional USB Driver Installation
    4. 5.4 Direct EEPROM Programming
    5. 5.5 SSH Key Generation
  9. 6Telemetry
  10.   A TPS257xx-Q1 GUI Feature - CUSTOM ID (Version Control)
  11.   Revision History

4.6.4 VIN Engine On or Off

VIN Engine On or Off power level parameters are configurable in this page.

The TPS257xx-Q1 family supports autonomous power transition dependent upon the VIN (for example, VBATT) voltage level per the diagram shown in Figure 4-4.

GUID-20230801-SS0I-MFCP-CSVB-GRZFBBWLVSF4-low.png Figure 4-4 Engine On/Off Controls and Power Mode Operation

The Engine On/Off voltage thresholds must be configured in sequential order (highest to lowest): EngOnVth (full power) > EngOffNomVth (low power) > EngOnMinVth (low power) > EngOffMinVth (disabled).

Maximum power for the low-power phase is a configurable total port power output. Program maximum power relative to total VBUS power.

Dual port example:

  • Total USB VBUS Power = 100 W
  • VBUS Port A maximum power = 60 W and VBUS Port B maximum power = 60 W
  • VBUS Port A minimum power = 15 W and VBUS Port B minimum power = 15 W
  • Maximum power for low power = 30 W:
    • Once the VIN level falls below the EngOffNomVth setpoint, the total USB VBUS power is reduced to 30 W total for all ports.
Note: If the maximum power for low power is less than the total minimum port power (the sum of the minimum port power for ports) ports are disabled upon entry into the low-power phase.