SLUSDU8G September   2019  – January 2025 TPS62860 , TPS62861

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Interface Timing Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Soft Start
      2. 7.3.2 Output Voltage Selection (VSEL) for TPS62860x
      3. 7.3.3 Output Voltage Selection (VSEL and I2C)
      4. 7.3.4 Undervoltage Lockout (UVLO)
      5. 7.3.5 Power Good (PG)
      6. 7.3.6 Switch Current Limit and Short Circuit Protection
      7. 7.3.7 Thermal Shutdown
      8. 7.3.8 Output Voltage Discharge
    4. 7.4 Device Functional Modes
      1. 7.4.1 Smart Enable and Shutdown (EN)
      2. 7.4.2 Forced PWM Operation
      3. 7.4.3 Forced PWM Mode During Output Voltage Change
      4. 7.4.4 Power Save Mode
    5. 7.5 Programming
      1. 7.5.1 Serial Interface Description
      2. 7.5.2 Standard- and Fast-Mode Protocol
      3. 7.5.3 I2C Update Sequence
      4. 7.5.4 I2C Register Reset
  9. 8 Register Map
    1. 8.1 I2C Address Byte
    2. 8.2 Register Address Byte
    3. 8.3 VOUT Register 1
    4. 8.4 VOUT Register 2
    5. 8.5 CONTROL Register
    6. 8.6 STATUS Register
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application, TPS628610
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Inductor Selection
        2. 9.2.2.2 Output Capacitor Selection
        3. 9.2.2.3 Input Capacitor Selection
      3. 9.2.3 Application Curves
    3. 9.3 Typical Application, TPS628600, TPS62860x
      1. 9.3.1 Design Requirements
      2. 9.3.2 Detailed Design Procedure
      3. 9.3.3 Application Curves
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

7.3.3 Output Voltage Selection (VSEL and I2C)

The TPS6286x has two options to select the output voltage.

The voltage on the VSEL pin can change the output voltage. Putting this pin HIGH selects the output voltage according to VOUT register 2. Putting this pin LOW selects the voltage according to VOUT Register 1. The pin can be toggled during operation.

The pin can also be selected by the value in the VOUT register that is chosen by VSEL at the moment. The voltage changes right after the I2C command is received.