SLVSHO1 March   2025 TPS1689

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics
    6. 5.6  PMBus and GPIO DC Characteristics
    7. 5.7  Telemetry
    8. 5.8  Logic Interface
    9. 5.9  Timing Requirements
    10. 5.10 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Undervoltage Protection
      2. 6.3.2  Insertion Delay
      3. 6.3.3  Overvoltage Protection
      4. 6.3.4  Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 6.3.4.1 Slew rate (dVdt) and Inrush Current Control
          1. 6.3.4.1.1 Start-Up Timeout
        2. 6.3.4.2 Steady-State Overcurrent Protection (Circuit-Breaker)
        3. 6.3.4.3 Active Current Limiting During Start-Up
        4. 6.3.4.4 Short-Circuit Protection
      5. 6.3.5  Analog Load Current Monitor (IMON)
      6. 6.3.6  Overtemperature Protection
      7. 6.3.7  Analog Junction Temperature Monitor (TEMP)
      8. 6.3.8  FET Health Monitoring
      9. 6.3.9  Single Point Failure Mitigation
        1. 6.3.9.1 IMON Pin Single Point Failure
        2. 6.3.9.2 IREF Pin Single Point Failure
      10. 6.3.10 General Purpose Digital Input/Output Pins
        1. 6.3.10.1 Fault Response and Indication (FLT)
        2. 6.3.10.2 Power Good Indication (PG)
        3. 6.3.10.3 Parallel Device Synchronization (SWEN)
      11. 6.3.11 Stacking Multiple eFuses for Unlimited Scalability
        1. 6.3.11.1 Current Balancing During Start-Up
      12. 6.3.12 Quick Output Discharge(QOD)
      13. 6.3.13 Write Protect Feature(WP#)
      14. 6.3.14 PMBus® Digital Interface
        1. 6.3.14.1  PMBus® Device Addressing
        2. 6.3.14.2  SMBus Protocol
        3. 6.3.14.3  SMBus™ Message Formats
        4. 6.3.14.4  Packet Error Checking
        5. 6.3.14.5  Group Commands
        6. 6.3.14.6  SMBus™ Alert Response Address (ARA)
        7. 6.3.14.7  PMBus® Commands
        8. 6.3.14.8  Analog-to-digital Converter
        9. 6.3.14.9  Digital-to-analog Converters
        10. 6.3.14.10 DIRECT format Conversion
        11. 6.3.14.11 Blackbox Fault Recording
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Single Device, Standalone Operation
      2. 7.1.2 Single TPS1689 and multiple TPS1685 Devices, Parallel Connection
      3. 7.1.3 Multiple TPS1689 Devices: Parallel Connection With Individual Telemetry
      4. 7.1.4 Multiple Devices, Independent Operation (Multi-zone)
    2. 7.2 Typical Application: 54-V, 2-kW Power Path Protection with PMBus® Interface in Datacenter Servers
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Performance Plots
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Transient Protection
      2. 7.3.2 Output Short-Circuit Measurements
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Application Limitation and Errata
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Mechanical Data

Package Options

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

6.3.14.7 PMBus® Commands

Table 6-6 shows the list of PMBus® commands supported by the TPS1689 eFuse.

Table 6-6 TPS1689 PMBus® Commands List
Command Name Code Type Description PMBus®Transaction Default Value Stored in On-chip Non-volatile Memory Stored in EEPROM
OPERATION

01h

 Control

eFuse ON/OFF control

 Read/Write byte w/ PEC

0x80

 N/A

N/A
CLEAR_FAULTS

03h

 Control Clear all fault status bits and Blackbox RAM

Send byte w/ PEC

 N/A N/A N/A
RESTORE_FACTORY_DEFAULTS

12h

 Control Initialize/Reset all configuration registers to their factory default values Send byte w/ PEC N/A N/A

N/A
STORE_USER_ALL

15h

 Control Store configuration values to NVM/EEPROM Send byte w/ PEC N/A N/A

N/A
RESTORE_USER_ALL

16h

 Control Initialize all configuration registers with the user programmed values stored in NVM/EEPROM Send byte w/ PEC N/A N/A

N/A
BB_ERASE

F5h

 Control Erase Blackbox data in external EEPROM Send byte w/ PEC N/A N/A

N/A
FETCH_BB_EEPROM

F6h

 Control Fetch Blackbox EEPROM contents into internal shadow registers Send byte w/ PEC N/A N/A

N/A
CLEAR_BB_RAM FCh Control Clears the contents of bbox RAM Send byte w/ PEC N/A N/A N/A
POWER_CYCLE

D9h

 Control

Power down output and restart after a delay programmed through the RETRY_CONFIG register

 Send byte w/ PEC N/A N/A

N/A
MFR_WRITE_PROTECT

F8h

 Control Enable/Disable write protection for OPERATION & POWER_CYCLE commands, configuration registers, NVM, and EEPROM Read/write byte w/ PEC

0x00

 N/A

N/A
CAPABILITY

19h

Telemetry

 Supported PMBus® features Read byte w/ PEC

0xD0

 Y

N
STATUS_BYTE

78h

 Telemetry Status register lower byte Read byte w/ PEC

Undefined

 N

N
STATUS_WORD

79h

 Telemetry Status register word Read word w/ PEC Undefined

N

Y
STATUS_OUT

7Ah

 Telemetry OUT bus status Read byte w/ PEC Undefined

N

N
STATUS_IOUT

7Bh

 Telemetry OUT current status Read byte w/ PEC Undefined

N

N
STATUS_INPUT

7Ch

 Telemetry

IN bus status

 Read byte w/ PEC Undefined

N

Y
STATUS_TEMP

7Dh

 Telemetry Device temperature status Read byte w/ PEC Undefined

N

N
STATUS_CML

7Eh

 Telemetry Communications, Memory, Logic status Read byte w/ PEC Undefined

N

N
STATUS_MFR_SPECIFIC

80h

 Telemetry Manufacturer specific fault status Read byte w/ PEC Undefined

N

Y
STATUS_MFR_SPECIFIC

_2

F3h

 Telemetry Additional manufacturer specific fault status Read word w/ PEC Undefined

N

N
PMBUS_REVISION

98h

 Telemetry PMBus® Specifications Part I and II rev

1.3

 Read byte w/ PEC

0x33

Y

N
MFR_ID

99h

 Telemetry

Manufacturer name

 Block read 2 bytes w/ PEC

"TI"

Y

N
MFR_MODEL

9Ah

 Telemetry Device name Block read 8 bytes w/ PEC

"TPS1689"

Y

N
MFR_REVISION

9Bh

 Telemetry

Device revision

 Block read 1 byte w/ PEC

0x01

Y

N
READ_VIN

88h

 Telemetry Input voltage Read word w/ PEC Undefined

N

N
READ_VOUT

8Bh

 Telemetry Output voltage Read word w/ PEC Undefined

N

N
READ_IIN

89h

 Telemetry

Input current

 Read word w/ PEC Undefined

N

N
READ_TEMPERATURE_1

8Dh

 Telemetry Device temperature Read word w/ PEC Undefined

N

N
READ_VAUX

D0h

 Telemetry

Auxiliary analog input voltage

 Read word w/ PEC Undefined

N

N
READ_PIN

97h

 Telemetry

Instantaneous input power

 Read word w/ PEC Undefined

N

N
READ_EIN

86h

 Telemetry

Accumulated input energy

 Block read 6 bytes w/ PEC Undefined

N

N
READ_VIN_AVG

DCh

 Telemetry

Average input voltage

 Read word w/ PEC Undefined

N

N
READ_VIN_MIN

D1h

 Telemetry Minimum input voltage Read word w/ PEC Undefined

N

N
READ_VIN_PEAK

D2h

 Telemetry Peak input voltage Read word w/ PEC Undefined

N

Y
READ_VOUT_AVG

DDh

 Telemetry Average output voltage Read word w/ PEC Undefined

N

N
READ_VOUT_MIN

DAh

 Telemetry Minimum output voltage Read word w/ PEC Undefined

N

N
READ_IIN_AVG

DEh

 Telemetry

Average input current

 Read word w/ PEC Undefined

N

N
READ_IIN_PEAK

D4h

 Telemetry

Peak input current

 Read word w/ PEC Undefined

N

Y
READ_TEMP_AVG

D6h

 Telemetry

Average device temperature

 Read word w/ PEC Undefined

N

N
READ_TEMP_PEAK

D7h

 Telemetry

Peak device temperature

 Read word w/ PEC Undefined

N

Y
READ_PIN_AVG

DFh

 Telemetry Average input power Read word w/ PEC Undefined

N

N
READ_PIN_PEAK

D5h

 Telemetry

Peak input power

 Read word w/ PEC Undefined

N

N
READ_SAMPLE_BUF

D8h

 Telemetry

ADC sample buffer

 Block read 64 bytes w/ PEC Undefined

N

N
READ_BB_RAM

FDh

 Telemetry

Blackbox RAM registers

 Block read 7 bytes w/ PEC Undefined

N

Y
READ_BB_EEPROM

F4h

 Telemetry

Blackbox EEPROM content

 Block read 16 bytes w/ PEC Undefined

N

Y
BB_TIMER

FAh

 Telemetry

Blackbox tick timer

 Read byte w/ PEC Undefined

N

Y
PMBUS_ADDR

FBh

 Configuration

PMBus® device address for ADDR0 = Open and ADDR1 = Open setting

 Read/write byte w/ PEC

0x40

Y

Y
VIN_UV_WARN

58h

 Configuration Input undervoltage warning threshold Read/write word w/ PEC

0x0095

N

N
VIN_UV_FLT

59h

 Configuration Input undervoltage fault threshold Read/write word w/ PEC

0x008D

Y

Y
VIN_OV_WARN

57h

 Configuration Input overvoltage warning threshold Read/write word w/ PEC

0x00A5

N

N
VIN_OV_FLT

55h

 Configuration Input overvoltage fault threshold Read/write word w/ PEC

0x000E

Y

Y
VOUT_UV_WARN 43h Configuration Output undervoltage warning threshold Read/write word w/ PEC

0x0095

N

N

VOUT_PGTH

5Fh

 Configuration Output threshold for Power Good de-assertion Read/write word w/ PEC

0x008D

Y

Y

OT_WARN

51h

 Configuration Overtemperature warning threshold Read/write word w/ PEC

0x007E

N

N

OT_FLT

4Fh

 Configuration Overtemperature fault threshold Read/write word w/ PEC

0x0085

Y

Y
PIN_OP_WARN

6Bh

 Configuration Input overpower warning threshold Read/write word w/ PEC

0x00FF

N

N
IIN_OC_WARN

5Dh

 Configuration Input overcurrent warning threshold Read/write word w/ PEC

0x00FF

N

N

VIREF

E0h

 Configuration

Reference voltage for current regulation and protection blocks

 Read/write byte w/ PEC

0x32

Y

Y
AUX/TEMP/EEDATA/EECLK/GPIOx configuration

E1h

 Configuration AUX/EEDATA/GPIO2 & AUX/EECLK/GPIO1 pin configuration Read/write byte w/ PEC

0x00

Y

Y
SMBA_FLTb_CONFIG

E2h

 Configuration SMBA/FLTb pin configuration Read/write byte w/ PEC

0x00

Y

Y
ALERT_MASK

DBh

 Configuration SMB Alert assertion mask Read/write word w/ PEC

0x0100

N

N
FAULT_MASK

E3h

 Configuration FLT assertion mask Read/write word w/ PEC

0x0000

Y

Y
DEVICE_CONFIG

E4h

 Configuration Device configuration Read/write word w/ PEC

0x1400

Y

Y
BB_CONFIG

E5h

 Configuration Blackbox configuration Read/write byte w/ PEC

0x00

Y

Y

OC_TIMER

E6h

 Configuration Transient overcurrent blanking timer Read/write byte w/ PEC

0x14

N

N

RETRY_CONFIG

E7h

 Configuration

Auto-retry configuration

 Read/write byte w/ PEC

0x84

Y

Y
ADC_CONFIG_1

E8h

 Configuration ADC Configuration Read/write byte w/ PEC

0x00

N

N
ADC_CONFIG_2

E9h

 Configuration ADC Configuration Read/write byte w/ PEC

0x00

N

N
PK_MIN_AVG

EAh

 Configuration Peak/Min/Average configuration Read/write byte w/ PEC

0x00

N

N
PSU_VOLTAGE

ECh

 Configuration

PSU nominal voltage

 Read/write byte w/ PEC

0x9D

N

N
INS_DLY

F9h

 Configuration

Insertion delay

 Read/write byte w/ PEC

0x00

Y

Y
IMON OFFSET CALIBRATION F2h Configuration Configuration for IMON offset Read/write byte 0x00 Y Y
LOAD_IMON_OFFSET CAh NA 0x00 Y Y
USER DATA F7h Configuration User stored generic data 0x00 Y Y