JAJSMF5B september   2022  – june 2023 TPS25990

PRODUCTION DATA  

  1.   1
  2. 特長
  3. アプリケーション
  4. 概要
  5. Revision History
  6. 概要 (続き)
  7. Pin Configuration and Functions
  8. 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  Logic Interface DC Characteristics
    7. 7.7  Telemetry
    8. 7.8  PMBus Interface Timing Characteristics
    9. 7.9  External EEPROM Interface Timing Characteristics
    10. 7.10 Timing Requirements
    11. 7.11 Switching Characteristics
    12. 7.12 Typical Characteristics
  9. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Undervoltage Protection
      2. 8.3.2  Insertion Delay
      3. 8.3.3  Overvoltage Protection
      4. 8.3.4  Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 8.3.4.1 Slew rate (dVdt) and Inrush Current Control
          1. 8.3.4.1.1 Start-Up Timeout
        2. 8.3.4.2 Steady-State Overcurrent Protection (Circuit-Breaker)
        3. 8.3.4.3 Active Current Limiting During Start-Up
        4. 8.3.4.4 Short-Circuit Protection
      5. 8.3.5  Single Point Failure Mitigation
        1. 8.3.5.1 IMON Pin Single Point Failure
        2. 8.3.5.2 ILIM Pin Single Point Failure
        3. 8.3.5.3 IREF Pin Single Point Failure
      6. 8.3.6  Analog Load Current Monitor (IMON)
      7. 8.3.7  Overtemperature Protection
      8. 8.3.8  Analog Junction Temperature Monitor (TEMP)
      9. 8.3.9  FET Health Monitoring
      10. 8.3.10 General Purpose Digital Input/Output Pins
        1. 8.3.10.1 Fault Response and Indication (FLT)
        2. 8.3.10.2 Power Good Indication (PG)
        3. 8.3.10.3 Parallel Device Synchronization (SWEN)
      11. 8.3.11 Stacking Multiple eFuses for Unlimited Scalability
        1. 8.3.11.1 Current Balancing During Start-Up
      12. 8.3.12 General Purpose Comparators
      13. 8.3.13 Output Discharge
      14. 8.3.14 PMBus® Digital Interface
        1. 8.3.14.1  PMBus® Device Addressing
        2. 8.3.14.2  SMBus Protocol
        3. 8.3.14.3  SMBus™ Message Formats
        4. 8.3.14.4  Packet Error Checking
        5. 8.3.14.5  Group Commands
        6. 8.3.14.6  SMBus™ Alert Response Address (ARA)
        7. 8.3.14.7  PMBus® Commands
          1. 8.3.14.7.1 Detailed Descriptions of PMBus® Commands
            1. 8.3.14.7.1.1  OPERATION (01h, Read/Write Byte)
            2. 8.3.14.7.1.2  CLEAR_FAULTS (03h, Send Byte)
            3. 8.3.14.7.1.3  RESTORE_FACTORY_DEFAULTS (12h, Send Byte)
            4. 8.3.14.7.1.4  STORE_USER_ALL (15h, Send Byte)
            5. 8.3.14.7.1.5  RESTORE_USER_ALL (16h, Send Byte)
            6. 8.3.14.7.1.6  BB_ERASE (F5h, Send Byte)
            7. 8.3.14.7.1.7  FETCH_BB_EEPROM (F6h, Send Byte)
            8. 8.3.14.7.1.8  POWER_CYCLE (D9h, Send Byte)
            9. 8.3.14.7.1.9  MFR_WRITE_PROTECT (F8h, Read/Write Byte)
            10. 8.3.14.7.1.10 CAPABILITY (19h, Read Byte)
            11. 8.3.14.7.1.11 STATUS_BYTE (78h, Read Byte)
            12. 8.3.14.7.1.12 STATUS_WORD (79h, Read Word)
            13. 8.3.14.7.1.13 STATUS_OUT (7Ah, Read Byte)
            14. 8.3.14.7.1.14 STATUS_IOUT (7Bh, Read Byte)
            15. 8.3.14.7.1.15 STATUS_INPUT (7Ch, Read Byte)
            16. 8.3.14.7.1.16 STATUS_TEMP (7Dh, Read Byte)
            17. 8.3.14.7.1.17 STATUS_CML (7Eh, Read Byte)
            18. 8.3.14.7.1.18 STATUS_MFR_SPECIFIC (80h, Read Byte)
            19. 8.3.14.7.1.19 STATUS_MFR_SPECIFIC_2 (F3h, Read Word)
            20. 8.3.14.7.1.20 PMBUS_REVISION (98h, Read Byte)
            21. 8.3.14.7.1.21 MFR_ID (99h, Block Read)
            22. 8.3.14.7.1.22 MFR_MODEL (9Ah, Block Read)
            23. 8.3.14.7.1.23 MFR_REVISION (9Bh, Block Read)
            24. 8.3.14.7.1.24 READ_VIN (88h, Read Word)
            25. 8.3.14.7.1.25 READ_VOUT (8Bh, Read Word)
            26. 8.3.14.7.1.26 READ_IIN (89h, Read Word)
            27. 8.3.14.7.1.27 READ_TEMPERATURE_1 (8Dh, Read Word)
            28. 8.3.14.7.1.28 READ_VAUX (D0h, Read Word)
            29. 8.3.14.7.1.29 READ_PIN (97h, Read Word)
            30. 8.3.14.7.1.30 READ_EIN (86h, Block Read)
            31. 8.3.14.7.1.31 READ_VIN_AVG (DCh, Read Word)
            32. 8.3.14.7.1.32 READ_VIN_MIN (D1h, Read Word)
            33. 8.3.14.7.1.33 READ_VIN_PEAK (D2h, Read Word)
            34. 8.3.14.7.1.34 READ_VOUT_AVG (DDh, Read Word)
            35. 8.3.14.7.1.35 READ_VOUT_MIN (DAh, Read Word)
            36. 8.3.14.7.1.36 READ_IIN_AVG (DEh, Read Word)
            37. 8.3.14.7.1.37 READ_IIN_PEAK (D4h, Read Word)
            38. 8.3.14.7.1.38 READ_TEMP_AVG (D6h, Read Word)
            39. 8.3.14.7.1.39 READ_TEMP_PEAK (D7h, Read Word)
            40. 8.3.14.7.1.40 READ_PIN_AVG (DFh, Read Word)
            41. 8.3.14.7.1.41 READ_PIN_PEAK (D5h, Read Word)
            42. 8.3.14.7.1.42 READ_SAMPLE_BUF (D8h, Block Read)
            43. 8.3.14.7.1.43 READ_BB_RAM (FDh, Block Read)
            44. 8.3.14.7.1.44 READ_BB_EEPROM (F4h, Block Read)
            45. 8.3.14.7.1.45 BB_TIMER (FAh, Read Byte)
            46. 8.3.14.7.1.46 PMBUS_ADDR (FBh, Read/Write Byte)
            47. 8.3.14.7.1.47 VIN_UV_WARN (58h, Read/Write Word)
            48. 8.3.14.7.1.48 VIN_UV_FLT (59h, Read/Write Word)
            49. 8.3.14.7.1.49 VIN_OV_WARN (57h, Read/Write Word)
            50. 8.3.14.7.1.50 VIN_OV_FLT (55h, Read/Write Word)
            51. 8.3.14.7.1.51 VOUT_UV_WARN (43h, Read/Write Word)
            52. 8.3.14.7.1.52 VOUT_PGTH (5Fh, Read/Write Word)
            53. 8.3.14.7.1.53 OT_WARN (51h, Read/Write Word)
            54. 8.3.14.7.1.54 OT_FLT (4Fh, Read/Write Word)
            55. 8.3.14.7.1.55 PIN_OP_WARN (6Bh, Read/Write Word)
            56. 8.3.14.7.1.56 IIN_OC_WARN (5Dh, Read/Write Word)
            57. 8.3.14.7.1.57 VIREF (E0h, Read/Write Byte)
            58. 8.3.14.7.1.58 GPIO_CONFIG_12 (E1h, Read/Write Byte)
            59. 8.3.14.7.1.59 GPIO_CONFIG_34 (E2h, Read/Write Byte)
            60. 8.3.14.7.1.60 ALERT_MASK (DBh, Read/Write Word)
            61. 8.3.14.7.1.61 FAULT_MASK (E3h, Read/Write Word)
            62. 8.3.14.7.1.62 DEVICE_CONFIG (E4h, Read/Write Word)
            63. 8.3.14.7.1.63 BB_CONFIG (E5h, Read/Write Byte)
            64. 8.3.14.7.1.64 OC_TIMER (E6h, Read/Write Byte)
            65. 8.3.14.7.1.65 RETRY_CONFIG (E7h, Read/Write Byte)
            66. 8.3.14.7.1.66 ADC_CONFIG_1 (E8h, Read/Write Byte)
            67. 8.3.14.7.1.67 ADC_CONFIG_2 (E9h, Read/Write Byte)
            68. 8.3.14.7.1.68 PK_MIN_AVG (EAh, Read/Write Byte)
            69. 8.3.14.7.1.69 VCMPxREF (EBh, Read/Write Byte)
            70. 8.3.14.7.1.70 PSU_VOLTAGE (ECh, Read/Write Byte)
            71. 8.3.14.7.1.71 CABLE_DROP (EDh, Read/Write Byte)
            72. 8.3.14.7.1.72 GPDAC1 (F0h, Read/Write Byte)
            73. 8.3.14.7.1.73 GPDAC2 (F1h, Read/Write Byte)
            74. 8.3.14.7.1.74 INS_DLY (F9h, Read/Write Byte)
        8. 8.3.14.8  Analog-to-digital Converter
        9. 8.3.14.9  Digital-to-analog Converters
        10. 8.3.14.10 DIRECT format Conversion
        11. 8.3.14.11 Blackbox Fault Recording
    4. 8.4 Device Functional Modes
  10. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Single Device, Standalone Operation
      2. 9.1.2 Multiple Devices, Parallel Connection
      3. 9.1.3 Multiple Devices, Independent Operation (Multi-zone)
    2. 9.2 Typical Application: 12-V, 4-kW Power Path Protection with PMBus® Interface in Datacenter Servers
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Performance Plots
    3. 9.3 Best Design Practices
    4. 9.4 Power Supply Recommendations
      1. 9.4.1 Transient Protection
      2. 9.4.2 Output Short-Circuit Measurements
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 ドキュメントの更新通知を受け取る方法
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  12. 11Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

DIRECT format Conversion

For telemetry and configuration parameters, the TPS25990 supports DIRECT format. Digital codes for telemetry or configuration parameters can be converted to their equivalent real world units using Equation 19 and Equation 20.

  • Interpreting received values:

    The host system uses Equation 19 to convert the value received from the PMBus® device into a reading of V, A, °C, or W:

    Equation 19. X=1mY×10-R-b

    Where:

    • X, is the calculated, “real world” value in the appropriate units (V, A, °C, or W);

    • m, the slope coefficient, is a two byte, two’s complement integer;

    • Y, is a two byte two’s complement integer received from the PMBus® device;

    • b, the offset, is a two byte, two’s complement integer; and

    • R, the exponent, is a one byte, two’s complement integer.

  • Sending a value:

    To send a value, the host must use Equation 20 to find the value of Y:

    Equation 20. Y=mX+b×10R

    Where:

    • Y is the two byte two’s complement integer to be sent to the unit;

    • m, the slope coefficient, is the two byte, two’s complement integer;

    • X, a “real world” value, in units such as V, A, °C, or W, to be converted for transmission;

    • b, the offset, is the two byte, two’s complement integer; and

    • R, the exponent, is the decimal value equivalent to the one byte, two’s complement integer.

Table 8-67 TPS25990 PMBus® DIRECT format Conversion Guide
ParameterUnitsZero Code Analog ValueFull scale Digital CodeFull-scale Analog ValuembR

READ_VIN

V

0

0x3FF

19.48

5251

0

- 2

READ_VIN_PEAK

V

0

0x3FF

19.48

5251

0

- 2

READ_VIN_PEAK_EEPROM

V

0

0xFF

19.42

13128

0

- 3

READ_VIN_MIN

V

0

0x3FF

19.48

5251

0

- 2
READ_VIN_AVG

V

0

0x3FF

19.48

5251

0

- 2

VIN_UV_WARN

V

0

0xFF

19.42

13128

0

- 3

VIN_UV_FLT

V

0

0xFF19.4213128

0

- 3

VIN_OV_WARN

V

0

0xFF19.4213128

0

- 3

VIN_OV_FLT

V

2.95

0xF

17.72

10163 30081- 4
READ_VOUT

V

0

0x3FF19.485251

0

- 2
READ_VOUT_AVG

V

0

0x3FF19.485251

0

- 2
READ_VOUT_MIN

V

0

0x3FF19.485251

0

- 2
VOUT_UV_WARN

V

0

0xFF19.4213128

0

- 3
VOUT_PGTH

V

0

0xFF19.4213128

0

- 3
READ_IIN

A

0

0x3FF

107250/RIMON

9.538 × RIMON

0

- 3
READ_IIN_AVG

A

0

0x3FF

107250/RIMON

9.538 × RIMON

0

- 3

READ_IIN_PEAK

A

0

0x3FF

107250/RIMON

9.538 × RIMON

0

- 3
READ_IIN_PEAK_EEPROM

A

0

0xFF

107250/RIMON23.8 × RIMON

0

- 4

IIN_OC_WARN

A

0

0xFF

107250/RIMON

23.8 × RIMON

0

- 4
READ_TEMPERATURE_1

°C

229.30x3FF

501.4

140

32100- 2

READ_TEMP_AVG

°C

229.30x3FF

501.4

140

32100- 2

READ_TEMP_PEAK

°C

229.30x3FF

501.4

140

32100- 2
READ_TEMP_PEAK_EEPROM°C 228.7

0xFF

499.8

35

8006

- 2

OT_WARN

°C

228.70xFF

499.8

35

8006

- 2

OT_FLT

°C

228.70xFF

499.8

35

8006

- 2
VAUX

V

0

0x3FF

1.95

5251

0

- 1

VAUX_AVG

V

0

0x3FF

1.95

5251

0

- 1

READ_PIN

W

0

0x3FF

2091375/RIMON

4.901 × RIMON

0

- 4

READ_PIN_PEAK

W

0

0x3FF

2091375/RIMON

4.901 × RIMON

0

- 4

READ_PIN_AVG

W

0

0x3FF

2091375/RIMON

4.901 × RIMON

0

- 4
PIN_OP_WARN

W

0

0xFF

2091375/RIMON

12.217 × RIMON

0

- 5
READ_EIN

J

0

0x7FFF

-

38.22 × RIMON

0

- 7

VIREF

V

0.3

0x3F1.186

7111

2133- 2
GPDAC1µA

6

0x3F

53.25

1333

8000- 3
GPDAC2

V

0.3

0x3F

1.186

7111

2133- 2

CMP2REF {VCMPXREF[7:4]}

V

0.2

0xF

1.7

10000

2000- 3
CMP1REF {VCMPXREF[3:0]}

V

0.2

0xF

1.7

10000

2000- 3

CABLE_VOLTAGE_DROP

V

0

0xFF

4.845

5263

0

- 2

READ_SAMPLE_BUF_VIN

V

0

0xFF

19.42

13128

0

- 3
READ_SAMPLE_BUF_VOUT

V

0

0xFF

19.42

13128

0

- 3
READ_SAMPLE_BUF_TEMP°C

-228.7

0xFF

499.8

35

8006

- 2
READ_SAMPLE_BUF_VAUX

V

0

0xFF

1.94

13128

0

- 2
READ_SAMPLE_BUF_IIN

A

0

0xFF

107250/RIMON23.8 × RIMON

0

- 4