SLUSF26 March   2023 TPS546D24S

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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Average Current-Mode Control
        1. 7.3.1.1 On-Time Modulator
        2. 7.3.1.2 Current Error Integrator
        3. 7.3.1.3 Voltage Error Integrator
      2. 7.3.2  Linear Regulators
      3. 7.3.3  AVIN and PVIN Pins
      4. 7.3.4  Input Undervoltage Lockout (UVLO)
        1. 7.3.4.1 Fixed AVIN UVLO
        2. 7.3.4.2 Fixed VDD5 UVLO
        3. 7.3.4.3 Programmable PVIN UVLO
        4. 7.3.4.4 EN/UVLO Pin
      5. 7.3.5  Start-Up and Shutdown
      6. 7.3.6  Differential Sense Amplifier and Feedback Divider
      7. 7.3.7  Set Output Voltage and Adaptive Voltage Scaling (AVS)
        1. 7.3.7.1 Reset Output Voltage
        2. 7.3.7.2 Soft Start
      8. 7.3.8  Prebiased Output Start-Up
      9. 7.3.9  Soft Stop and (65h) TOFF_FALL Command
      10. 7.3.10 Power Good (PGOOD)
      11. 7.3.11 Set Switching Frequency
      12. 7.3.12 Frequency Synchronization
      13. 7.3.13 Loop Follower Detection
      14. 7.3.14 Current Sensing and Sharing
      15. 7.3.15 Telemetry
      16. 7.3.16 Overcurrent Protection
      17. 7.3.17 Overvoltage/Undervoltage Protection
      18. 7.3.18 Overtemperature Management
      19. 7.3.19 Fault Management
      20. 7.3.20 Back-Channel Communication
      21. 7.3.21 Switching Node (SW)
      22. 7.3.22 PMBus General Description
      23. 7.3.23 PMBus Address
      24. 7.3.24 PMBus Connections
    4. 7.4 Device Functional Modes
      1. 7.4.1 Programming Mode
      2. 7.4.2 Standalone, Loop Controller, Loop Follower Mode Pin Connections
      3. 7.4.3 Continuous Conduction Mode
      4. 7.4.4 Operation With CNTL Signal (EN/UVLO)
      5. 7.4.5 Operation with (01h) OPERATION Control
      6. 7.4.6 Operation with CNTL and (01h) OPERATION Control
    5. 7.5 Programming
      1. 7.5.1 Supported PMBus Commands
      2. 7.5.2 Pin Strapping
        1. 7.5.2.1 Programming MSEL1
        2. 7.5.2.2 Programming MSEL2
        3. 7.5.2.3 Programming VSEL
        4. 7.5.2.4 Programming ADRSEL
        5. 7.5.2.5 Programming MSEL2 for a Loop Follower Device (GOSNS Tied to BP1V5)
        6. 7.5.2.6 Pin-Strapping Resistor Configuration
    6. 7.6 Register Maps
      1. 7.6.1  Conventions for Documenting Block Commands
      2. 7.6.2  (01h) OPERATION
      3. 7.6.3  (02h) ON_OFF_CONFIG
      4. 7.6.4  (03h) CLEAR_FAULTS
      5. 7.6.5  (04h) PHASE
      6. 7.6.6  (10h) WRITE_PROTECT
      7. 7.6.7  (15h) STORE_USER_ALL
      8. 7.6.8  (16h) RESTORE_USER_ALL
      9. 7.6.9  (19h) CAPABILITY
      10. 7.6.10 (1Bh) SMBALERT_MASK
      11. 7.6.11 (1Bh) SMBALERT_MASK_VOUT
      12. 7.6.12 (1Bh) SMBALERT_MASK_IOUT
      13. 7.6.13 (1Bh) SMBALERT_MASK_INPUT
      14. 7.6.14 (1Bh) SMBALERT_MASK_TEMPERATURE
      15. 7.6.15 (1Bh) SMBALERT_MASK_CML
      16. 7.6.16 (1Bh) SMBALERT_MASK_OTHER
      17. 7.6.17 (1Bh) SMBALERT_MASK_MFR
      18. 7.6.18 (20h) VOUT_MODE
      19. 7.6.19 (21h) VOUT_COMMAND
      20. 7.6.20 (22h) VOUT_TRIM
      21. 7.6.21 (24h) VOUT_MAX
      22. 7.6.22 (25h) VOUT_MARGIN_HIGH
      23. 7.6.23 (26h) VOUT_MARGIN_LOW
      24. 7.6.24 (27h) VOUT_TRANSITION_RATE
      25. 7.6.25 (29h) VOUT_SCALE_LOOP
      26. 7.6.26 (2Bh) VOUT_MIN
      27. 7.6.27 (33h) FREQUENCY_SWITCH
      28. 7.6.28 (35h) VIN_ON
      29. 7.6.29 (36h) VIN_OFF
      30. 7.6.30 (37h) INTERLEAVE
      31. 7.6.31 (38h) IOUT_CAL_GAIN
      32. 7.6.32 (39h) IOUT_CAL_OFFSET
      33. 7.6.33 (40h) VOUT_OV_FAULT_LIMIT
      34. 7.6.34 (41h) VOUT_OV_FAULT_RESPONSE
      35. 7.6.35 (42h) VOUT_OV_WARN_LIMIT
      36. 7.6.36 (43h) VOUT_UV_WARN_LIMIT
      37. 7.6.37 (44h) VOUT_UV_FAULT_LIMIT
      38. 7.6.38 (45h) VOUT_UV_FAULT_RESPONSE
      39. 7.6.39 (46h) IOUT_OC_FAULT_LIMIT
      40. 7.6.40 (47h) IOUT_OC_FAULT_RESPONSE
      41. 7.6.41 (4Ah) IOUT_OC_WARN_LIMIT
      42. 7.6.42 (4Fh) OT_FAULT_LIMIT
      43. 7.6.43 (50h) OT_FAULT_RESPONSE
      44. 7.6.44 (51h) OT_WARN_LIMIT
      45. 7.6.45 (55h) VIN_OV_FAULT_LIMIT
      46. 7.6.46 (56h) VIN_OV_FAULT_RESPONSE
      47. 7.6.47 (58h) VIN_UV_WARN_LIMIT
      48. 7.6.48 (60h) TON_DELAY
      49. 7.6.49 (61h) TON_RISE
      50. 7.6.50 (62h) TON_MAX_FAULT_LIMIT
      51. 7.6.51 (63h) TON_MAX_FAULT_RESPONSE
      52. 7.6.52 (64h) TOFF_DELAY
      53. 7.6.53 (65h) TOFF_FALL
      54. 7.6.54 (78h) STATUS_BYTE
      55. 7.6.55 (79h) STATUS_WORD
      56. 7.6.56 (7Ah) STATUS_VOUT
      57. 7.6.57 (7Bh) STATUS_IOUT
      58. 7.6.58 (7Ch) STATUS_INPUT
      59. 7.6.59 (7Dh) STATUS_TEMPERATURE
      60. 7.6.60 (7Eh) STATUS_CML
      61. 7.6.61 (7Fh) STATUS_OTHER
      62. 7.6.62 (80h) STATUS_MFR_SPECIFIC
      63. 7.6.63 (88h) READ_VIN
      64. 7.6.64 (8Bh) READ_VOUT
      65. 7.6.65 (8Ch) READ_IOUT
      66. 7.6.66 (8Dh) READ_TEMPERATURE_1
      67. 7.6.67 (98h) PMBUS_REVISION
      68. 7.6.68 (99h) MFR_ID
      69. 7.6.69 (9Ah) MFR_MODEL
      70. 7.6.70 (9Bh) MFR_REVISION
      71. 7.6.71 (9Eh) MFR_SERIAL
      72. 7.6.72 (ADh) IC_DEVICE_ID
      73. 7.6.73 (AEh) IC_DEVICE_REV
      74. 7.6.74 (B1h) USER_DATA_01 (COMPENSATION_CONFIG)
      75. 7.6.75 (B5h) USER_DATA_05 (POWER_STAGE_CONFIG)
      76. 7.6.76 (D0h) MFR_SPECIFIC_00 (TELEMETRY_CONFIG)
      77. 7.6.77 (DAh) MFR_SPECIFIC_10 (READ_ALL)
      78. 7.6.78 (DBh) MFR_SPECIFIC_11 (STATUS_ALL)
      79. 7.6.79 (DCh) MFR_SPECIFIC_12 (STATUS_PHASE)
      80. 7.6.80 (E3h) MFR_SPECIFIC_19 (PGOOD_CONFIG)
      81. 7.6.81 (E4h) MFR_SPECIFIC_20 (SYNC_CONFIG)
      82. 7.6.82 (ECh) MFR_SPECIFIC_28 (STACK_CONFIG)
      83. 7.6.83 (EDh) MFR_SPECIFIC_29 (MISC_OPTIONS)
      84. 7.6.84 (EEh) MFR_SPECIFIC_30 (PIN_DETECT_OVERRIDE)
      85. 7.6.85 (EFh) MFR_SPECIFIC_31 (DEVICE_ADDRESS)
      86. 7.6.86 (F0h) MFR_SPECIFIC_32 (NVM_CHECKSUM)
      87. 7.6.87 (F1h) MFR_SPECIFIC_33 (SIMULATE_FAULT)
      88. 7.6.88 (FAh) MFR_SPECIFIC_42 (PASSKEY)
      89. 7.6.89 (FBh) MFR_SPECIFIC_43 (EXT_WRITE_PROTECT)
      90. 7.6.90 (FCh) MFR_SPECIFIC_44 (FUSION_ID0)
      91. 7.6.91 (FDh) MFR_SPECIFIC_45 (FUSION_ID1)
  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  Custom Design With WEBENCH® Tools
        2. 8.2.2.2  Switching Frequency
        3. 8.2.2.3  Inductor Selection
        4. 8.2.2.4  Output Capacitor Selection
          1. 8.2.2.4.1 Output Voltage Deviation During Load Transient
          2. 8.2.2.4.2 Output Voltage Ripple
        5. 8.2.2.5  Input Capacitor Selection
        6. 8.2.2.6  AVIN, BP1V5, VDD5 Bypass Capacitor
        7. 8.2.2.7  Bootstrap Capacitor Selection
        8. 8.2.2.8  R-C Snubber
        9. 8.2.2.9  Output Voltage Setting (VSEL Pin)
        10. 8.2.2.10 Compensation Selection (MSEL1 Pin)
        11. 8.2.2.11 Soft Start, Overcurrent Protection, and Stacking Configuration (MSEL2 Pin)
        12. 8.2.2.12 Enable and UVLO
        13. 8.2.2.13 ADRSEL
        14. 8.2.2.14 Pin-Strapping Resistor Selection
        15. 8.2.2.15 BCX_CLK and BCX_DAT
      3. 8.2.3 Application Curves
    3. 8.3 Two-Phase Application
      1. 8.3.1  Design Requirements
      2. 8.3.2  Switching Frequency
      3. 8.3.3  Inductor Selection
      4. 8.3.4  Output Capacitor Selection
      5. 8.3.5  Input Capacitor Selection
      6. 8.3.6  AVIN, BP1V5, VDD5 Bypass Capacitor
      7. 8.3.7  Bootstrap Capacitor Selection
      8. 8.3.8  R-C Snubber
      9. 8.3.9  Output Voltage Setting (VSEL Pin)
      10. 8.3.10 Compensation Selection (MSEL1 Pin)
      11. 8.3.11 GOSNS/FLWR Pin of Loop Follower Devices
      12. 8.3.12 Soft Start, Overcurrent Protection, and Stacking Configuration (MSEL2 Pin)
      13. 8.3.13 Enable, UVLO
      14. 8.3.14 VSHARE Pin
        1. 8.3.14.1 ADRSEL Pin
      15. 8.3.15 SYNC Pin
      16. 8.3.16 VOSNS Pin of Loop Follower Devices
      17. 8.3.17 Unused Pins of Loop Follower Devices
      18. 8.3.18 Two-phase Application Curves
    4. 8.4 Four-Phase Application
    5. 8.5 Power Supply Recommendations
    6. 8.6 Layout
      1. 8.6.1 Layout Guidelines
      2. 8.6.2 Layout Example
      3. 8.6.3 Mounting and Thermal Profile Recommendation
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Development Support
        1. 9.1.2.1 Custom Design With WEBENCH® Tools
        2. 9.1.2.2 Texas Instruments Fusion Digital Power Designer
    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
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.6.54 (78h) STATUS_BYTE

CMD Address78h
Write Transaction:Write Byte
Read Transaction:Read Byte
Format:Unsigned Binary (1 byte)
Phased:Yes
NVM Back-up:No
Updates:On-the-fly

The STATUS_BYTE command returns one byte of information with a summary of the most critical faults, such as overvoltage, overcurrent, overtemperature, and so forth. The supported STATUS_BYTE message content is described in the following table. The STATUS_BYTE is equal the low byte of STATUS_WORD. The conditions in the STATUS_BYTE are summary information only. They are asserted to inform the host as to which other STATUS registers must be checked in the event of a fault. Setting and clearing of these bits must be done in the individual status registers. For example, Clearing VOUT_OVF in STATUS_VOUT also clears VOUT_OV in STATUS_BYTE.

Figure 7-60 (78h) STATUS_BYTE Register Map
76543210
RWRRRRRRR
BUSYOFFVOUT_OVIOUT_OCVIN_UVTEMPCMLNONE OF THE ABOVE
LEGEND: R/W = Read/Write; R = Read only
Table 7-71 Register Field Descriptions

Bit

Field

Access

Reset

Description

7BUSYRW0b0b: A fault was NOT declared because the device was busy and unable to respond.
1b. A fault was declared because the device was busy and unable to respond.
6OFFR0bLIVE (unlatched) status bit
0b. The unit is enabled and converting power.
1b: The unit is NOT converting power for any reason including simply not being enabled.
5VOUT_ OVR0b0b: An output overvoltage fault has NOT occurred.
1b: An output overvoltage fault has occurred.
4IOUT_ OCR0b0b: An output overcurrent fault has NOT occurred.
1b: An output overcurrent fault has occurred.
3VIN_ UVR0b0b: An input undervoltage fault has NOT occurred.
1b: An input undervoltage fault has occurred.
2TEMPR0b0b: A temperature fault/warning has NOT occurred.
1b: A temperature fault/warning has occurred, the host must check STATUS_TEMPERATURE for more information.
1CMLR0b0b: A communication, memory, logic fault has NOT occurred.
1b: A communication, memory, logic fault has occurred, the host must check STATUS_ CML for more information.
0NONE OF THE ABOVER0b0b: A fault other than those listed above has NOT occurred.
1b: A fault other than those listed above has occurred. The host must check the STATUS_ WORD for more information.

Writing 80h to STATUS_BYTE will clear the BUSY bit, if set.