SLVSCA6C October   2013  – October 2017 TPS65311-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
      1. 7.8.1 BUCK 1 Characteristics
      2. 7.8.2 BUCK 2 and BUCK3 Characteristics
      3. 7.8.3 BOOST Characteristics
      4. 7.8.4 LDO Noise Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Buck Controller (BUCK1)
      2. 8.3.2  Synchronous Buck Converters BUCK2 and BUCK3
      3. 8.3.3  BOOST Converter
      4. 8.3.4  Frequency-Hopping Spread Spectrum
      5. 8.3.5  Linear Regulator LDO
      6. 8.3.6  Gate Driver Supply
      7. 8.3.7  RESET
      8. 8.3.8  Soft Start
      9. 8.3.9  Power-on Reset Flag
      10. 8.3.10 WAKE Pin
      11. 8.3.11 IRQ Pin
      12. 8.3.12 VBAT Undervoltage Warning
      13. 8.3.13 VIN Over or Undervoltage Protection
      14. 8.3.14 External Protection
      15. 8.3.15 Overtemperature Detection and Shutdown
      16. 8.3.16 Independent Voltage Monitoring
      17. 8.3.17 GND Loss Detection
      18. 8.3.18 Reference Voltage
      19. 8.3.19 Shutdown Comparator
      20. 8.3.20 LED and High-Side Switch Control
      21. 8.3.21 Window Watchdog
      22. 8.3.22 Timeout in Start-Up Modes
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operating Modes
        1. 8.4.1.1  INIT
        2. 8.4.1.2  TESTSTART
        3. 8.4.1.3  TESTSTOP
        4. 8.4.1.4  VTCHECK
        5. 8.4.1.5  RAMP
          1. 8.4.1.5.1 Power-Up Sequencing
          2. 8.4.1.5.2 Power-Down Sequencing
        6. 8.4.1.6  ACTIVE
        7. 8.4.1.7  ERROR
        8. 8.4.1.8  LOCKED
        9. 8.4.1.9  LPM0
        10. 8.4.1.10 SHUTDOWN
    5. 8.5 Programming
      1. 8.5.1 SPI
        1. 8.5.1.1 FSI Bit
    6. 8.6 Register Map
      1. 8.6.1 Register Description
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Buck Controller (BUCK1)
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Adjusting the Output Voltage for the BUCK1 Controller
          2. 9.2.1.2.2 Output Inductor, Sense Resistor, and Capacitor Selection for the BUCK1 Controller
          3. 9.2.1.2.3 Compensation of the Buck Controller
          4. 9.2.1.2.4 Bootstrap Capacitor for the BUCK1 Controller
        3. 9.2.1.3 BUCK 1 Application Curve
      2. 9.2.2 Synchronous Buck Converters BUCK2 and BUCK3
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Adjusting the Output Voltage for the BUCK2 and BUCK3 Converter
          2. 9.2.2.2.2 Output Inductor Selection for the BUCK2 and BUCK3 Converter
          3. 9.2.2.2.3 Compensation of the BUCK2 and BUCK3 Converters
          4. 9.2.2.2.4 Bootstrap Capacitor for the BUCK2/3 Converters
        3. 9.2.2.3 BUCK2 and BUCK3 Application Curves
      3. 9.2.3 BOOST Converter
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
          1. 9.2.3.2.1 Adjusting the Output Voltage for the Boost Converter
          2. 9.2.3.2.2 Output Inductor and Capacitor Selection for the BOOST Converter
          3. 9.2.3.2.3 Compensation of the BOOST Converter
          4. 9.2.3.2.4 Output Diode for the BOOST Converter
        3. 9.2.3.3 BOOST Converter Application Curves
      4. 9.2.4 Linear Regulator
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
          1. 9.2.4.2.1 Adjusting the Output Voltage for the Linear Regulator
          2. 9.2.4.2.2 Output Capacitance for the Linear Regulator
        3. 9.2.4.3 Linear Regulator Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Buck Controller
      2. 11.1.2 Buck Converter
      3. 11.1.3 Boost Converter
      4. 11.1.4 Linear Regulator
      5. 11.1.5 Other Considerations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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5 Description (continued)

To help support system safety, the device includes voltage monitoring on all supply rails and a window-watchdog to monitor the MCU and DSP. Other features include a high-side driver which drives a warning-lamp LED, a reference voltage which is used as ADC reference in the MCU, DSP, and a shutdown comparator which, in combination with external NTC-resistor, switches off the device at too-low ambient temperature.