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

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • VMA|23
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

TPS1689 TPS1689x VMA Package 23-Pin LQFN Top ViewFigure 5-1 TPS1689x VMA Package 23-Pin LQFN Top View
Table 5-1 Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NO.

ILIM

1

O

An external resistor from this pin to GND sets the active current sharing threshold during steady state. This pin also serves as individual eFuse current monitor output during steady state. Do not leave floating.

IMON

2

O

An external resistor from this pin to GND sets the overcurrent/circuit-breaker threshold and fast trip threshold during steady state. This pin also acts as a fast and accurate analog output load current monitor signal during steady state. Do not leave floating.
IREF

3

O

Programmable reference voltage for overcurrent protection block, generated using internal DAC. Can be used to drive reference votlage for other secondary devices in primary/secondary parallel configurations.

DVDT

4

O

Startup Output Slew Rate control pin. Leave it open to allow fastest startup. Connect capacitor to ground to slow down the slew rate to manage inrush current.

GND

5

G

Device Ground reference pin. Connect to System Ground.

ADDR0

6

I

I2C Address Configuration Pin. Pin strap to open/short to ground or resistor to ground to generate different address combinations.

OUT

7, 8

P

Power output. Must be soldered to the output power plane uniformly for proper heat dissipation

VDD

9

P

Controller power input pin. Can be used to power the internal control circuitry

with a filtered and stable supply which is not affected by system transients.

Connect this pin to VIN through a series resistor and add a decoupling capacitor

to GND.

IN

10, 22, 23, Exposed Pad

P

Power Input. Must be soldered to input power plane uniformly to ensure proper heat dissipation and to maintain optimal current distribution through the device.
SDA

11

I/O

I2C Data Line for PMBus interface. Needs external Pull-up resistor.

SCL

12

I

I2C Clock Line for PMBus interface. Needs external Pull-up resistor.

SMBA/FLT

13

O

Active low FAULT or SMBus alert output. Pin function is configurable through SMBA_FLT_CONFIG register.

AUX/EEDATA/GPIO2

14

I/O

Auxiliary input for ADC or External EEPROM Data IO or General-Purpose Digital IO. Pin function is configurable through AUX/TEMP/EEDATA/EECLK/GPIO register.

TEMP/EECLK/GPIO1

15

I/O

Analog temperature output. Can be tied together with TEMP outputs of multiple devices in a parallel configuration to get the peak temperature of the chain. Or External EEPROM Clock output or General-Purpose Digital IO. Pin function is configurable through AUX/TEMP/EEDATA/EECLK/GPIO register.

EN/UVLO

16

I

Active High Enable input. Connect resistor divider from input supply to set the Undervoltage threshold. Do not leave floating.
NC

17

-

No internal Connection.
ADDR1

18

I

I2C Address Configuration Pin. Pin strap to open/short to ground or resistor to ground to generate different address combinations.

PGOOD

19

O

Open-drain active high power good output. This pin has weak internal pull-up to internal supply voltage.

SWEN

20

I/O

Open drain signal to indicate and control power switch ON/OFF status. This facilitates synchronization of multiple devices in a parallel chain. This pin has internal Pull-up.
WP#21IWrite Protect: Connect this pin to GND to disable PMBus write access to the device completely. When this pin is floating, PMBus write access is controlled by the MFR_WRITE_PROTECT command.