SLUSDC9A August   2018  – June 2021 TPSM831D31

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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  References: DAC
    7. 6.7  Telemetry
    8. 6.8  Current Sense and Calibration
    9. 6.9  Logic Interface Pins: A_EN, A_PGOOD, B_EN, B_PGOOD,RESET
    10. 6.10 Protections: OVP and UVP
    11. 6.11 Typical Characteristics (VIN = 12 V)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 DCAP+ Control
      2. 7.3.2 Setting the Load-Line (DROOP)
      3. 7.3.3 Start-Up Timing
      4. 7.3.4 Load Transitions
      5. 7.3.5 Switching Frequency
      6. 7.3.6 RESET Function
      7. 7.3.7 VID Table
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous Conduction Mode
      2. 7.4.2 Operation With EN Signal Control
      3. 7.4.3 Operation With OPERATION Control
      4. 7.4.4 Operation With EN and OPERATION Control
    5. 7.5 Programming
      1. 7.5.1  PMBus Connections
      2. 7.5.2  PMBus Address Selection
      3. 7.5.3  Supported Commands
      4. 7.5.4  Commonly Used PMBus Commands
      5. 7.5.5  Voltage, Current, Power, and Temperature Readings
        1. 7.5.5.1 (88h) READ_VIN
        2. 7.5.5.2 (89h) READ_IIN
        3. 7.5.5.3 (8Bh) READ_VOUT
        4. 7.5.5.4 (8Ch) READ_IOUT
        5. 7.5.5.5 (8Dh) READ_TEMPERATURE_1
        6. 7.5.5.6 (96h) READ_POUT
        7. 7.5.5.7 (97h) READ_PIN
        8. 7.5.5.8 (D4h) MFR_SPECIFIC_04
      6. 7.5.6  Output Current Sense and Calibration
        1. 7.5.6.1 Reading Individual Phase Currents
          1. 7.5.6.1.1 Reading Total Current
          2. 7.5.6.1.2 51
      7. 7.5.7  Output Voltage Margin Testing
        1. 7.5.7.1 (01h) OPERATION
        2. 7.5.7.2 (26h) VOUT_MARGIN_LOW
        3. 7.5.7.3 (25h) VOUT_MARGIN_HIGH
      8. 7.5.8  Loop Compensation
        1. 7.5.8.1 (D7h) MFR_SPECIFIC_07
        2. 7.5.8.2 (28h) VOUT_DROOP
      9. 7.5.9  Converter Protection and Response
      10. 7.5.10 Output Overvoltage Protection and Response
        1. 7.5.10.1 (40h) VOUT_OV_FAULT_LIMIT
        2. 7.5.10.2 (41h) VOUT_OV_FAULT_RESPONSE
      11. 7.5.11 Maximum Allowed Output Voltage Setting
        1. 7.5.11.1 (24h) VOUT_MAX
      12. 7.5.12 Output Undervoltage Protection and Response
        1. 7.5.12.1 (44h) VOUT_UV_FAULT_LIMIT
        2. 7.5.12.2 (45h) VOUT_UV_FAULT_RESPONSE
      13. 7.5.13 Minimum Allowed Output Voltage Setting
        1. 7.5.13.1 (2Bh) VOUT_MIN
      14. 7.5.14 Output Overcurrent Protection and Response
        1. 7.5.14.1 (46h) IOUT_OC_FAULT_LIMIT
        2. 7.5.14.2 (4Ah) IOUT_OC_WARN_LIMIT
        3. 7.5.14.3 (47h) IOUT_OC_FAULT_RESPONSE
        4. 7.5.14.4 Per Phase Overcurrent Limit Thresholds
      15. 7.5.15 Input Under-Voltage Lockout (UVLO)
        1. 7.5.15.1 (35h) VIN_ON
      16. 7.5.16 Input Over-Voltage Protection and Response
        1. 7.5.16.1 (55h) VIN_OV_FAULT_LIMIT
        2. 7.5.16.2 (56h) VIN_OV_FAULT_RESPONSE
      17. 7.5.17 Input Undervoltage Protection and Response
        1. 7.5.17.1 (59h) VIN_UV_FAULT_LIMIT
        2. 7.5.17.2 (5Ah) VIN_UV_FAULT_RESPONSE
      18. 7.5.18 Input Overcurrent Protection and Response
        1. 7.5.18.1 (5Bh) IIN_OC_FAULT_LIMIT
        2. 7.5.18.2 (5Dh) IIN_OC_WARN_LIMIT
        3. 7.5.18.3 (5Ch) IIN_OC_FAULT_RESPONSE
      19. 7.5.19 Overtemperature Protection and Response
        1. 7.5.19.1 (4Fh) OT_FAULT_LIMIT
        2. 7.5.19.2 (51h) OT_WARN_LIMIT
        3. 7.5.19.3 (50h) OT_FAULT_RESPONSE
      20. 7.5.20 Dynamic Phase Shedding (DPS)
        1. 7.5.20.1 (DEh) MFR_SPECIFIC_14
        2. 7.5.20.2 (DFh) MFR_SPECIFIC_15
      21. 7.5.21 NVM Programming
      22. 7.5.22 NVM Security
        1. 7.5.22.1 (FAh) MFR_SPECIFIC_42
      23. 7.5.23 Black Box Recording
        1. 7.5.23.1 (D8h) MFR_SPECIFIC_08
      24. 7.5.24 Board Identification and Inventory Tracking
      25. 7.5.25 Status Reporting
        1. 7.5.25.1 (78h) STATUS_BYTE
        2. 7.5.25.2 (79h) STATUS_WORD
        3. 7.5.25.3 (7Ah) STATUS_VOUT
        4. 7.5.25.4 (7Bh) STATUS_IOUT
        5. 7.5.25.5 (7Ch) STATUS_INPUT
        6. 7.5.25.6 (7Dh) STATUS_TEMPERATURE
        7. 7.5.25.7 (7Eh) STATUS_CML
        8. 7.5.25.8 (80h) STATUS_MFR_SPECIFIC
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Capacitors
        2. 8.2.2.2 Output Capacitors
        3. 8.2.2.3 Switching Frequency
        4. 8.2.2.4 Set PMBus Address
        5. 8.2.2.5 PMBus GUI Default Values
      3. 8.2.3 Application Performance Plots
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
  • MOA|28
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.5.9 Converter Protection and Response

The TPSM831D31 supports a variety of power supply protection features. The table below summarizes these protection features, and their related PMBus registers. See the following sections for more details.

Table 7-28 TPSM831D31 Protection and Response
Threshold Response
Command Name Default Value Command Name Default Value
Output Voltage
Over-Voltage Protection VOUT_OV_FAULT_LIMIT 1.520 V (Ch A)
1.520 V (Ch B)		 VOUT_OV_FAULT_RESPONSE Shutdown,
do not restart
Maximum Allowed Output Voltage VOUT_MAX 1.520 V (Ch A)
1.520 V (Ch B)		 Refer to Register Description
Under-Voltage Protection VOUT_UV_FAULT_LIMIT 0.000 V (Ch A)
0.000 V (Ch B)		 VOUT_UV_FAULT_RESPONSE Shutdown,
do not restart
Minimum Allowed Output Voltage VOUT_MIN 0.000 V (Ch A)
0.000 V (Ch B)		 Refer to Register Description
Output Current
Over-Current Protection IOUT_OC_FAULT_LIMIT 180 A (Ch A)
60 A (Ch B)		 IOUT_OC_FAULT_RESPONSE Shutdown,
do not restart
Over-Current Warning IOUT_OC_WARN_LIMIT 120 A (Ch A)
40 A (Ch B)		 N/A. Warning Only.
Input Voltage
Turn-On Threshold VIN_ON 7.25 V N/A
Over-Voltage Protection VIN_OV_FAULT_LIMIT 17.000 V VIN_OV_FAULT_RESPONSE Continue
Uninterrupted
Under-Voltage Protection VIN_UV_FAULT_LIMIT 6.50 V VIN_UV_FAULT_RESPONSE Shutdown,
do not restart
Input Current
Over-Current Protection IIN_OC_FAULT_LIMIT 40.0 A IIN_OC_FAULT_RESPONSE Shutdown,
do not restart
Over-Current Warning IIN_OC_WARN_LIMIT 32.0 A N/A. Warning Only
Temperature
Over-Temperature Protection OT_FAULT_LIMIT 135 °C (Ch A)
135 °C (Ch B)		 OT_FAULT_RESPONSE Shutdown,
do not restart
Over-Temperature Warning OT_WARN_LIMIT 105 °C (Ch A)
105 °C (Ch B)		 N/A. Warning Only.