SLVSDD7B August   2016  – March 2022 UCD9090A

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 I2C/Smbus/PMBus Timing Requirements
    7. 6.7 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 TI Fusion GUI
      2. 7.3.2 PMBus Interface
      3. 7.3.3 Rail Configuration
    4. 7.4 Device Functional Modes
      1. 7.4.1  Power Supply Sequencing
        1. 7.4.1.1 Turn-On Sequencing
        2. 7.4.1.2 Turn-Off Sequencing
        3. 7.4.1.3 Sequencing Configuration Options
      2. 7.4.2  Pin-Selected Rail States
      3. 7.4.3  Monitoring
        1. 7.4.3.1 Voltage Monitoring
        2. 7.4.3.2 Current Monitoring
        3. 7.4.3.3 Remote Temperature Monitoring and Internal Temperature Sensor
        4. 7.4.3.4 Temperature by Host Input
      4. 7.4.4  Fault Responses and Alert Processing
      5. 7.4.5  Shut Down All Rails and Sequence On (Resequence)
      6. 7.4.6  GPIOs
      7. 7.4.7  GPO Control
      8. 7.4.8  GPO Dependencies
        1. 7.4.8.1 GPO Delays
        2. 7.4.8.2 State Machine Mode Enable
      9. 7.4.9  GPI Special Functions
        1. 7.4.9.1 Fault Shutdown Rails
        2. 7.4.9.2 Configured as Sequencing Debug Pin
        3. 7.4.9.3 Configured as Fault Pin
        4. 7.4.9.4 Cold Boot Mode Enable
      10. 7.4.10 Power Supply Enables
      11. 7.4.11 Cascading Multiple Devices
      12. 7.4.12 PWM Outputs
        1. 7.4.12.1 FPWM1-8
        2. 7.4.12.2 PWM1-2
      13. 7.4.13 Programmable Multiphase PWMs
      14. 7.4.14 Margining
        1. 7.4.14.1 Open-Loop Margining
        2. 7.4.14.2 Closed-Loop Margining
      15. 7.4.15 Run Time Clock
      16. 7.4.16 System Reset Signal
      17. 7.4.17 Watch Dog Timer
      18. 7.4.18 Data and Error Logging to Flash Memory
      19. 7.4.19 Brownout Function
      20. 7.4.20 PMBus Address Selection
      21. 7.4.21 Device Reset
      22. 7.4.22 JTAG Interface
      23. 7.4.23 Internal Fault Management and Memory Error Correction (ECC)
    5. 7.5 Programming
      1. 7.5.1 Full Configuration Update While in Normal Mode
  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 Estimating ADC Reporting Accuracy
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RGZ|48
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4.8 GPO Dependencies

GPIOs can be configured as outputs that are based on Boolean combinations of up to two ANDs all ORed together (Figure 7-13). Inputs to the logic blocks can include the first 8 defined GPOs, GPIs and rail-status flags. One rail status type is selectable as an input for each AND gate in a Boolean block. For a selected rail status, the status flags of all active rails can be included as inputs to the AND gate. _LATCH rail-status types stay asserted until cleared by a MFR PMBus command or by a specially configured GPI pin. The different rail-status types are shown in Table 7-5. See the UCD90xxx Sequencer and System Health Controller PMBus Command Reference for complete definitions of rail-status types. The GPO response can be configured to have a delayed assertion or deassertion. The first 8 GPOs can be chosen as Rail Sequence on/off Dependency. The logic state of the GPO instead of actual pin output is used as dependency condition.

GUID-344DB6F1-30DA-4CB9-8FDC-63215A974C76-low.gifFigure 7-13 Boolean Logic Combinations
GUID-B506E663-ACCC-42F8-A267-D71C0860D2EC-low.pngFigure 7-14 Fusion Boolean Logic Builder
Table 7-5 Rail-Status Types For Boolean Logic
Rail-Status Types
POWER_GOODIOUT_UC_FAULTTOFF_MAX_WARN_LATCH
MARGIN_ENTEMP_OT_FAULTSEQ_ON_TIMEOUT_LATCH
MRG_LOW_nHIGHTEMP_OT_WARNSEQ_OFF_TIMEOUT_LATCH
VOUT_OV_FAULTSEQ_ON_TIMEOUTSYSTEM_WATCHDOG_TIMEOUT_LATCH
VOUT_OV_WARNSEQ_OFF_TIMEOUTIOUT_OC_FAULT_LATCH
VOUT_UV_WARNSYSTEM_WATCHDOG_TIMEOUTIOUT_OC_WARN_LATCH
VOUT_UV_FAULTVOUT_OV_FAULT_LATCHIOUT_UC_FAULT_LATCH
TON_MAX_FAULTVOUT_OV_WARN_LATCHTEMP_OT_FAULT_LATCH
TOFF_MAX_WARNVOUT_UV_WARN_LATCHTEMP_OT_WARN_LATCH
IOUT_OC_FAULTVOUT_UV_FAULT_LATCH
IOUT_OC_WARNTON_MAX_FAULT_LATCH

When GPO is set to POWER_GOOD, this POWER_GOOD state is based on the actual voltage measurement on the monitor pins assigned to those rails. For a rail that does not have a monitor pin, or have a monitor pin but without voltage monitoring, its POWER_GOOD state is used by sequencing purpose only, and is not be used by the GPO logic evaluation.