SLVSHO1A March   2025  – December 2025 TPS1689

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  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  Telemetry
    7. 6.7  PMBus and GPIO DC Characteristics
    8. 6.8  Logic Interface
    9. 6.9  Timing Requirements
    10. 6.10 Switching Characteristics
    11. 6.11 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  Undervoltage Protection
      2. 7.3.2  Insertion Delay
      3. 7.3.3  Overvoltage Protection
      4. 7.3.4  Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 7.3.4.1 Slew rate (dVdt) and Inrush Current Control
          1. 7.3.4.1.1 Start-Up Timeout
        2. 7.3.4.2 Steady-State Overcurrent Protection (Circuit-Breaker)
        3. 7.3.4.3 Active Current Limiting During Start-Up
        4. 7.3.4.4 Short-Circuit Protection
      5. 7.3.5  Analog Load Current Monitor (IMON)
      6. 7.3.6  Overtemperature Protection
      7. 7.3.7  Analog Junction Temperature Monitor (TEMP)
      8. 7.3.8  FET Health Monitoring
      9. 7.3.9  Single Point Failure Mitigation
        1. 7.3.9.1 IMON Pin Single Point Failure
        2. 7.3.9.2 IREF Pin Single Point Failure
      10. 7.3.10 General Purpose Digital Input/Output Pins
        1. 7.3.10.1 Fault Response and Indication (FLT)
        2. 7.3.10.2 Power Good Indication (PG)
        3. 7.3.10.3 Parallel Device Synchronization (SWEN)
      11. 7.3.11 Stacking Multiple eFuses for Unlimited Scalability
        1. 7.3.11.1 Current Balancing During Start-Up
      12. 7.3.12 Quick Output Discharge(QOD)
      13. 7.3.13 Write Protect Feature(WP#)
      14. 7.3.14 PMBus® Digital Interface
        1. 7.3.14.1  PMBus® Device Addressing
        2. 7.3.14.2  SMBus Protocol
        3. 7.3.14.3  SMBus™ Message Formats
        4. 7.3.14.4  Packet Error Checking
        5. 7.3.14.5  Group Commands
        6. 7.3.14.6  SMBus™ Alert Response Address (ARA)
        7. 7.3.14.7  PMBus® Commands
          1. 7.3.14.7.1 Detailed Descriptions of PMBus® Commands
            1. 7.3.14.7.1.1  OPERATION (01h, Read/Write Byte)
            2. 7.3.14.7.1.2  CLEAR_FAULTS (03h, Send Byte)
            3. 7.3.14.7.1.3  RESTORE_FACTORY_DEFAULTS (12h, Send Byte)
            4. 7.3.14.7.1.4  STORE_USER_ALL (15h, Send Byte)
            5. 7.3.14.7.1.5  RESTORE_USER_ALL (16h, Send Byte)
            6. 7.3.14.7.1.6  BB_ERASE (F5h, Send Byte)
            7. 7.3.14.7.1.7  FETCH_BB_EEPROM (F6h, Send Byte)
            8. 7.3.14.7.1.8  CLEAR_BB_RAM (FCh, Send Byte)
            9. 7.3.14.7.1.9  POWER_CYCLE (D9h, Send Byte)
            10. 7.3.14.7.1.10 MFR_WRITE_PROTECT (F8h, Read/Write Byte)
            11. 7.3.14.7.1.11 CAPABILITY (19h, Read Byte)
            12. 7.3.14.7.1.12 STATUS_BYTE (78h, Read Byte)
            13. 7.3.14.7.1.13 STATUS_WORD (79h, Read Word)
            14. 7.3.14.7.1.14 STATUS_OUT (7Ah, Read Byte)
            15. 7.3.14.7.1.15 STATUS_IOUT (7Bh, Read Byte)
            16. 7.3.14.7.1.16 STATUS_INPUT (7Ch, Read Byte)
            17. 7.3.14.7.1.17 STATUS_TEMP (7Dh, Read Byte)
            18. 7.3.14.7.1.18 STATUS_CML (7Eh, Read Byte)
            19. 7.3.14.7.1.19 STATUS_MFR_SPECIFIC (80h, Read Byte)
            20. 7.3.14.7.1.20 STATUS_MFR_SPECIFIC_2 (F3h, Read Word)
            21. 7.3.14.7.1.21 PMBUS_REVISION (98h, Read Byte)
            22. 7.3.14.7.1.22 MFR_ID (99h, Block Read)
            23. 7.3.14.7.1.23 MFR_MODEL (9Ah, Block Read)
            24. 7.3.14.7.1.24 MFR_REVISION (9Bh, Block Read)
            25. 7.3.14.7.1.25 READ_VIN (88h, Read Word)
            26. 7.3.14.7.1.26 READ_VOUT (8Bh, Read Word)
            27. 7.3.14.7.1.27 READ_IIN (89h, Read Word)
            28. 7.3.14.7.1.28 READ_TEMPERATURE_1 (8Dh, Read Word)
            29. 7.3.14.7.1.29 READ_VAUX (D0h, Read Word)
            30. 7.3.14.7.1.30 READ_PIN (97h, Read Word)
            31. 7.3.14.7.1.31 READ_EIN (86h, Block Read)
            32. 7.3.14.7.1.32 READ_VIN_AVG (DCh, Read Word)
            33. 7.3.14.7.1.33 READ_VIN_MIN (D1h, Read Word)
            34. 7.3.14.7.1.34 READ_VIN_PEAK (D2h, Read Word)
            35. 7.3.14.7.1.35 READ_VOUT_AVG (DDh, Read Word)
            36. 7.3.14.7.1.36 READ_VOUT_MIN (DAh, Read Word)
            37. 7.3.14.7.1.37 READ_IIN_AVG (DEh, Read Word)
            38. 7.3.14.7.1.38 READ_IIN_PEAK (D4h, Read Word)
            39. 7.3.14.7.1.39 READ_TEMP_AVG (D6h, Read Word)
            40. 7.3.14.7.1.40 READ_TEMP_PEAK (D7h, Read Word)
            41. 7.3.14.7.1.41 READ_PIN_AVG (DFh, Read Word)
            42. 7.3.14.7.1.42 READ_PIN_PEAK (D5h, Read Word)
            43. 7.3.14.7.1.43 READ_SAMPLE_BUF (D8h, Block Read)
            44. 7.3.14.7.1.44 READ_BB_RAM (FDh, Block Read)
            45. 7.3.14.7.1.45 READ_BB_EEPROM (F4h, Block Read)
            46. 7.3.14.7.1.46 BB_TIMER (FAh, Read Byte)
            47. 7.3.14.7.1.47 PMBUS_ADDR (FBh, Read/Write Byte)
            48. 7.3.14.7.1.48 VIN_UV_WARN (58h, Read/Write Word)
            49. 7.3.14.7.1.49 VIN_UV_FLT (59h, Read/Write Word)
            50. 7.3.14.7.1.50 VIN_OV_WARN (57h, Read/Write Word)
            51. 7.3.14.7.1.51 VIN_OV_FLT (55h, Read/Write Word)
            52. 7.3.14.7.1.52 VOUT_UV_WARN (43h, Read/Write Word)
            53. 7.3.14.7.1.53 VOUT_PGTH (5Fh, Read/Write Word)
            54. 7.3.14.7.1.54 OT_WARN (51h, Read/Write Word)
            55. 7.3.14.7.1.55 OT_FLT (4Fh, Read/Write Word)
            56. 7.3.14.7.1.56 PIN_OP_WARN (6Bh, Read/Write Word)
            57. 7.3.14.7.1.57 IIN_OC_WARN (5Dh, Read/Write Word)
            58. 7.3.14.7.1.58 ALERT_MASK (DBh, Read/Write Word)
            59. 7.3.14.7.1.59 VIREF (E0h, Read/Write Byte)
            60. 7.3.14.7.1.60 AUX/TEMP/EEDATA/EECLK/GPIOx (E1h, Read/Write Byte)
            61. 7.3.14.7.1.61 SMBA_FLT_CONFIG (E2h, Read/Write Byte)
            62. 7.3.14.7.1.62 FAULT_MASK (E3h, Read/Write Word)
            63. 7.3.14.7.1.63 DEVICE_CONFIG (E4h, Read/Write Word)
            64. 7.3.14.7.1.64 BB_CONFIG (E5h, Read/Write Byte)
            65. 7.3.14.7.1.65 OC_TIMER (E6h, Read/Write Byte)
            66. 7.3.14.7.1.66 RETRY_CONFIG (E7h, Read/Write Byte)
            67. 7.3.14.7.1.67 ADC_CONFIG_1 (E8h, Read/Write Byte)
            68. 7.3.14.7.1.68 ADC_CONFIG_2 (E9h, Read/Write Byte)
            69. 7.3.14.7.1.69 PK_MIN_AVG (EAh, Read/Write Byte)
            70. 7.3.14.7.1.70 PSU_VOLTAGE (ECh, Read/Write Byte)
            71. 7.3.14.7.1.71 CABLE_DROP (EDh, Read/Write Byte)
            72. 7.3.14.7.1.72 IMON OFFSET CALIBRATION (F2h, Read/Write Byte)
            73. 7.3.14.7.1.73 INS_DLY (F9h, Read/Write Byte)
        8. 7.3.14.8  Analog-to-Digital Converter
        9. 7.3.14.9  Digital-to-Analog Converters
        10. 7.3.14.10 DIRECT Format Conversion
        11. 7.3.14.11 Blackbox Fault Recording
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Single Device, Standalone Operation
      2. 8.1.2 Single TPS1689x and Multiple TPS1685 Devices, Parallel Connection
      3. 8.1.3 Multiple TPS1689x Devices: Parallel Connection With Individual Telemetry
      4. 8.1.4 Multiple Devices, Independent Operation (Multi-zone)
    2. 8.2 Typical Application: 54V, 2kW Power Path Protection with PMBus® Interface in Datacenter Servers
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Performance Plots
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Transient Protection and Other Design Considerations
      2. 8.3.2 Output Short-Circuit Measurements
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Third-Party Products Disclaimer
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
7.3.14.7.1.64 BB_CONFIG (E5h, Read/Write Byte)

BB_CONFIG is a manufacturer-specific command for configuring or reading the behavior of the Blackbox function as described in Section 7.3.14.11.

This command uses the PMBus® read or write byte protocol.

The details of this register are shown in Table 8-67.

Table 7-55 BB_CONFIG Register Description
BitName

Value

Description

Default

Access

7

FET_OFF_WR

BB EEPROM write trigger

Read/Write

1

Power FET turning OFF triggers write to BB EEPROM

0

0

Power FET turning OFF doesn’t trigger write to BB EEPROM

6

FLT_WR

BB EEPROM write trigger

1

Global Fault triggers write to BB EEPROM

0

0

Global Fault doesn’t trigger write to BB EEPROM

5

ALERT_WR

BB EEPROM write trigger

1

SMBA assertion triggers write to BB EEPROM

0

0

SMBA assertion doesn’t trigger write to BB EEPROM

4:2

Reserved

000

Reserved

000

1:0

BB_TICK

Blackbox timestamp tick interval

11

3200µs

00

10

800µs

01

200µs

00

10µs

Note:

A write command to this register should be preceded by the MFR_WRITE_PROTECT command to unlock the device first to prevent accidental accidental/spurious writes. If the WP# pin is pulled low, the write access is completely disabled in hardware and MFR_WRITE_PROTECT command has no effect.

Remember:

BB_CONFIG[5] needs to be used in conjunction with the ALERT_MASK register to determine which events trigger the Blackbox write to the external EEPROM. However, the GLBL_FLT (ALERT_MASK[6]) signal is excluded from the list of signals driving ALERT for Blackbox write even if they are unmasked in the ALERT_MASK register.