SLVSH51 july   2023 TPS631012 , TPS631013

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Rating
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics 
    6. 7.6 Timing Requirements
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Undervoltage Lockout (UVLO)
      2. 8.3.2 Enable and Soft Start
      3. 8.3.3 Device Enable (EN)
      4. 8.3.4 Output Voltage Control
      5. 8.3.5 Mode Selection (PFM/FPWM)
      6. 8.3.6 Output Discharge
      7. 8.3.7 Reverse Current Operation
      8. 8.3.8 Protection Features
        1. 8.3.8.1 Input Overvoltage Protection
        2. 8.3.8.2 Output Overvoltage Protection
        3. 8.3.8.3 Short Circuit Protection/Hiccup
        4. 8.3.8.4 Thermal Shutdown
    4. 8.4 Device Functional Modes
    5. 8.5 Programming
      1. 8.5.1 Serial Interface Description
      2. 8.5.2 Standard-, Fast-, and Fast-Mode Plus Protocol
      3. 8.5.3 I2C Update Sequence
    6. 8.6 Register Map
      1. 8.6.1 Register Description
        1. 8.6.1.1 Register Map
        2. 8.6.1.2 Register CONTROL1 (Register address: 0x02; Default: 0x08)
        3. 8.6.1.3 Register VOUT (Register address: 0x03; Default: 0x5C)
        4. 8.6.1.4 Register CONTROL2 (Register address: 0x05; Default: 0x45)
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      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
        4. 9.2.2.4 Setting the Output Voltage
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 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. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.3 Device Enable (EN)

The EN pin enables and disables the device.

  • When the EN pin is high, the device is enabled.
  • When the EN pin is low, the device is disabled.

The CONVERTER_EN bit in the Register CONTROL1 can also be used to enable and disable the output of the converter.

  • For TPS631012, the default bit of CONVERTER_EN = 0.
  • For TPS631013, the default bit of CONVERTER_EN = 1.

Table 8-1 Device Enable Truth Table
EXTERNAL EN PIN INTERNAL EN (CONVERTER_EN) DEVICE STATE OUTPUT STATE
0 X Device in Shutdown No Output
1 0 Programming Interface Active No Output
1 1 Device Active Output Enabled

Note that when the EN pin is connected to logic low, all the I2C registers are cleaned and reset to the default values. While setting CONVERTER_EN to 0 has no influences on the I2C registers