SLVSE83B December   2020  – September 2023 TPS6593-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
    1.     5
  5. 4 Revision History
  6. 5 Description (continued)
  7. 6 Pin Configuration and Functions
    1. 6.1 Digital Signal Descriptions
  8. 7 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  General Purpose Low Drop-Out Regulators (LDO1, LDO2, LDO3)
    6. 7.6  Low Noise Low Drop-Out Regulator (LDO4)
    7. 7.7  Internal Low Drop-Out Regulators (LDOVRTC, LDOVINT)
    8. 7.8  BUCK1, BUCK2, BUCK3, BUCK4 and BUCK5 Regulators
    9. 7.9  Reference Generator (BandGap)
    10. 7.10 Monitoring Functions
    11. 7.11 Clocks, Oscillators, and PLL
    12. 7.12 Thermal Monitoring and Shutdown
    13. 7.13 System Control Thresholds
    14. 7.14 Current Consumption
    15. 7.15 Backup Battery Charger
    16. 7.16 Digital Input Signal Parameters
    17. 7.17 Digital Output Signal Parameters
    18. 7.18 I/O Pullup and Pulldown Resistance
    19. 7.19 I2C Interface
    20. 7.20 Serial Peripheral Interface (SPI)
    21. 7.21 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  System Supply Voltage Monitor
      2. 8.3.2  Power Resources (Bucks and LDOs)
        1. 8.3.2.1 Buck Regulators
          1. 8.3.2.1.1  BUCK Regulator Overview
          2. 8.3.2.1.2  Multi-Phase Operation and Phase-Adding or Shedding
          3. 8.3.2.1.3  Transition Between PWM and PFM Modes
          4. 8.3.2.1.4  Multi-Phase BUCK Regulator Configurations
          5. 8.3.2.1.5  Spread-Spectrum Mode
          6. 8.3.2.1.6  Adaptive Voltage Scaling (AVS) and Dynamic Voltage Scaling (DVS) Support
          7. 8.3.2.1.7  BUCK Output Voltage Setting
          8. 8.3.2.1.8  BUCK Regulator Current Limit
          9. 8.3.2.1.9  SW_Bx Short-to-Ground Detection
          10. 8.3.2.1.10 Sync Clock Functionality
          11.        49
        2. 8.3.2.2 Low Dropout Regulators (LDOs)
          1. 8.3.2.2.1 LDOVINT
          2. 8.3.2.2.2 LDOVRTC
          3. 8.3.2.2.3 LDO1, LDO2, and LDO3
          4. 8.3.2.2.4 Low-Noise LDO (LDO4)
      3. 8.3.3  Output Voltage Monitor and PGOOD Generation
      4. 8.3.4  Thermal Monitoring
        1. 8.3.4.1 Thermal Warning Function
        2. 8.3.4.2 Thermal Shutdown
      5. 8.3.5  Backup Supply Power-Path
      6. 8.3.6  General-Purpose I/Os (GPIO Pins)
      7. 8.3.7  nINT, EN_DRV, and nRSTOUT Pins
      8. 8.3.8  Interrupts
      9. 8.3.9  RTC
        1. 8.3.9.1 General Description
        2. 8.3.9.2 Time Calendar Registers
          1. 8.3.9.2.1 TC Registers Read Access
          2. 8.3.9.2.2 TC Registers Write Access
        3. 8.3.9.3 RTC Alarm
        4. 8.3.9.4 RTC Interrupts
        5. 8.3.9.5 RTC 32-kHz Oscillator Drift Compensation
      10. 8.3.10 Watchdog (WDOG)
        1. 8.3.10.1 Watchdog Fail Counter and Status
        2. 8.3.10.2 Watchdog Start-Up and Configuration
        3. 8.3.10.3 MCU to Watchdog Synchronization
        4. 8.3.10.4 Watchdog Disable Function
        5. 8.3.10.5 Watchdog Sequence
        6. 8.3.10.6 Watchdog Trigger Mode
        7. 8.3.10.7 WatchDog Flow Chart and Timing Diagrams in Trigger Mode
        8.       79
        9. 8.3.10.8 Watchdog Question-Answer Mode
          1. 8.3.10.8.1 Watchdog Q&A Related Definitions
          2. 8.3.10.8.2 Question Generation
          3. 8.3.10.8.3 Answer Comparison
            1. 8.3.10.8.3.1 Sequence of the 2-bit Watchdog Answer Counter
            2. 8.3.10.8.3.2 Watchdog Sequence Events and Status Updates
            3. 8.3.10.8.3.3 Watchdog Q&A Sequence Scenarios
      11. 8.3.11 Error Signal Monitor (ESM)
        1. 8.3.11.1 ESM Error-Handling Procedure
          1. 8.3.11.1.1 Level Mode
          2.        90
          3. 8.3.11.1.2 PWM Mode
            1. 8.3.11.1.2.1 Good-Events and Bad-Events
            2. 8.3.11.1.2.2 ESM Error-Counter
            3. 8.3.11.1.2.3 ESM Start-Up in PWM Mode
            4. 8.3.11.1.2.4 ESM Flow Chart and Timing Diagrams in PWM Mode
            5.         96
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device State Machine
        1. 8.4.1.1 Fixed Device Power FSM
          1. 8.4.1.1.1 Register Resets and NVM Read at INIT State
        2. 8.4.1.2 Pre-Configurable Mission States
          1. 8.4.1.2.1 PFSM Commands
            1. 8.4.1.2.1.1  REG_WRITE_IMM Command
            2. 8.4.1.2.1.2  REG_WRITE_MASK_IMM Command
            3. 8.4.1.2.1.3  REG_WRITE_MASK_PAGE0_IMM Command
            4. 8.4.1.2.1.4  REG_WRITE_BIT_PAGE0_IMM Command
            5. 8.4.1.2.1.5  REG_WRITE_WIN_PAGE0_IMM Command
            6. 8.4.1.2.1.6  REG_WRITE_VOUT_IMM Command
            7. 8.4.1.2.1.7  REG_WRITE_VCTRL_IMM Command
            8. 8.4.1.2.1.8  REG_WRITE_MASK_SREG Command
            9. 8.4.1.2.1.9  SREG_READ_REG Command
            10. 8.4.1.2.1.10 SREG_WRITE_IMM Command
            11. 8.4.1.2.1.11 WAIT Command
            12. 8.4.1.2.1.12 DELAY_IMM Command
            13. 8.4.1.2.1.13 DELAY_SREG Command
            14. 8.4.1.2.1.14 TRIG_SET Command
            15. 8.4.1.2.1.15 TRIG_MASK Command
            16. 8.4.1.2.1.16 END Command
          2. 8.4.1.2.2 Configuration Memory Organization and Sequence Execution
          3. 8.4.1.2.3 Mission State Configuration
          4. 8.4.1.2.4 Pre-Configured Hardware Transitions
            1. 8.4.1.2.4.1 ON Requests
            2. 8.4.1.2.4.2 OFF Requests
            3. 8.4.1.2.4.3 NSLEEP1 and NSLEEP2 Functions
            4. 8.4.1.2.4.4 WKUP1 and WKUP2 Functions
            5. 8.4.1.2.4.5 LP_WKUP Pins for Waking Up from LP STANDBY
        3. 8.4.1.3 Error Handling Operations
          1. 8.4.1.3.1 Power Rail Output Error
          2. 8.4.1.3.2 Catastrophic Error
          3. 8.4.1.3.3 Watchdog (WDOG) Error
          4. 8.4.1.3.4 Warnings
        4. 8.4.1.4 Device Start-up Timing
        5. 8.4.1.5 Power Sequences
        6. 8.4.1.6 First Supply Detection
        7. 8.4.1.7 Register Power Domains and Reset Levels
      2. 8.4.2 Multi-PMIC Synchronization
        1. 8.4.2.1 SPMI Interface System Setup
        2. 8.4.2.2 Transmission Protocol and CRC
          1. 8.4.2.2.1 Operation with Transmission Errors
          2. 8.4.2.2.2 Transmitted Information
        3. 8.4.2.3 SPMI Target Device Communication to SPMI Controller Device
          1. 8.4.2.3.1 Incomplete Communication from SPMI Target Device to SPMI Controller Device
        4. 8.4.2.4 SPMI-BIST Overview
          1. 8.4.2.4.1 SPMI Bus during Boot BIST and RUNTIME BIST
          2. 8.4.2.4.2 Periodic Checking of the SPMI
          3. 8.4.2.4.3 SPMI Message Priorities
    5. 8.5 Control Interfaces
      1. 8.5.1 CRC Calculation for I2C and SPI Interface Protocols
      2. 8.5.2 I2C-Compatible Interface
        1. 8.5.2.1 Data Validity
        2. 8.5.2.2 Start and Stop Conditions
        3. 8.5.2.3 Transferring Data
        4. 8.5.2.4 Auto-Increment Feature
      3. 8.5.3 Serial Peripheral Interface (SPI)
    6. 8.6 Configurable Registers
      1. 8.6.1 Register Page Partitioning
      2. 8.6.2 CRC Protection for Configuration, Control, and Test Registers
      3. 8.6.3 CRC Protection for User Registers
      4. 8.6.4 Register Write Protection
        1. 8.6.4.1 Watchdog and ESM Configuration Registers
        2. 8.6.4.2 User Registers
    7. 8.7 Register Maps
      1. 8.7.1 TPS6593-Q1 Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Powering a Processor
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 VCCA
          2. 9.2.1.2.2 Internal LDOs
          3. 9.2.1.2.3 Crystal Oscillator
          4. 9.2.1.2.4 Buck Input Capacitors
          5. 9.2.1.2.5 Buck Output Capacitors
          6. 9.2.1.2.6 Buck Inductors
          7. 9.2.1.2.7 LDO Input Capacitors
          8. 9.2.1.2.8 LDO Output Capacitors
          9. 9.2.1.2.9 Digital Signal Connections
      2. 9.2.2 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Device Nomenclature
    3. 10.3 Documentation Support
    4. 10.4 Receiving Notification of Documentation Updates
    5. 10.5 Support Resources
    6. 10.6 Trademarks
    7. 10.7 Electrostatic Discharge Caution
    8. 10.8 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.3.10.1 Watchdog Fail Counter and Status

The watchdog includes a watchdog fail counter WD_FAIL_CNT[3:0] that increments because of bad events or decrements because of good events. Furthermore, the watchdog includes two configurable thresholds:

  1. Fail-threshold (configurable through bits WD_FAIL_TH[2:0])
  2. Reset-threshold (configurable through bits WD_RST_TH[2:0])

When the WD_FAIL_CNT[3:0] counter value is less than or equal to the configured Watchdog-Fail threshold (WD_FAIL_TH[2:0]) and bit WD_FIRST_OK=1, the MCU can set the ENABLE_DRV bit when no other error-flags are set.

When the WD_FAIL_CNT[3:0] counter value is greater than the configured Watchdog-Fail threshold (WD_FAIL_CNT[3:0] > WD_FAIL_TH[2:0]), the device clears the ENABLE_DRV bit, sets the error-flag WD_FAIL_INT, and pulls the nINT pin low.

When the WD_FAIL_CNT[3:0] counter value is greater than the configured Watchdog-Fail plus Watchdog-Reset threshold (WD_FAIL_CNT[3:0] > (WD_FAIL_TH[2:0] + WD_RST_TH[2:0])) and the watchdog-reset function is enabled (configuration bit WD_RST_EN=1), the device generates a WD_ERROR trigger in the state machine (see PFSM Trigger Selections) and sets the error-flag WD_RST_INT, and pulls the nINT pin low. Unless described otherwise in the user's guide of the orderable part number, this WD_ERROR trigger in the state machine causes the TPS6593-Q1 to execute a warm-reset, during which the nRSTOUT pin pulled low, and released after a pre-configured delay time.

The device clears the WD_FAIL_CNT[3:0] each time the watchdog enters the Long Window. The status bits WD_FAIL_INT and WD_RST_INT are latched until the MCU writes a ‘1’ to these bits.

Overview of Watchdog Fail Counter Value Ranges and Corresponding Device Status gives an overview of the Watchdog Fail Counter value ranges and the corresponding device status.

Table 8-8 Overview of Watchdog Fail Counter Value Ranges and Corresponding Device Status
Watchdog Fail Counter value
WD_FAIL_CNT[3:0]		Device Status
WD_FAIL_CNT[3:0] ≤ WD_FAIL_TH[2:0] MCU can set the ENABLE_DRV bit if WD_FIRST_OK=1 and no other error-flags are set.
WD_FAIL_TH[2:0] < WD_FAIL_CNT[3:0] ≤ (WD_FAIL_TH[2:0] + WD_RST_TH[2:0])The device sets error-flag WD_FAIL_INT and pulls the nINT pin low. Furthermore, , the device clears the ENABLE_DRV bit.
WD_FAIL_CNT[3:0] > (WD_FAIL_TH[2:0] + WD_RST_TH[2:0])If configuration bit WD_RST_EN=1, device generates WD_ERROR trigger in the state machine and reacts as defined in the PFSM, sets the error-flag WD_RST_INT, and pulls the nINT pin low. See Summary of Interrupt Signals for the interrupt handling of WD_RST.

The WD_FAIL_CNT[3:0] counter responds as follows:

  • When the Watchdog is in the Long-Window, the WD_FAIL_CNT[3:0] is cleared to 4’b0000
  • A good event decrements the WD_FAIL_CNT[3:0] by one before the start of the next Window-1
  • A bad event increments the WD_FAIL_CNT[3:0] by one before the start of the next Window-1

Refer to Watchdog Trigger Mode and Watchdog Q&A Related Definitions respectively for definitions of good events and bad events.