ZHCSJE0 September   2018 UCD90320U

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     简化应用
  4. 修订历史记录
  5. 说明 (续)
  6. Pin Configuration and Functions
    1.     Pin Functions
  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 Electrical Characteristics
    6. 7.6 Non-Volatile Memory Characteristics
    7. 7.7 I2C/PMBus Interface Timing Requirements
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 TI Fusion Digital Power Designer software
      2. 8.3.2 PMBUS Interface
      3. 8.3.3 Rail Setup
    4. 8.4 Device Functional Modes
      1. 8.4.1  Rail Monitoring Configuration
      2. 8.4.2  GPI Configuration
      3. 8.4.3  Rail Sequence Configuration
      4. 8.4.4  Fault Responses Configuration
      5. 8.4.5  GPO Configuration
        1. 8.4.5.1 Command Controlled GPO
        2. 8.4.5.2 Logic GPO
      6. 8.4.6  Margining Configuration
      7. 8.4.7  Pin Selected Rail States Configuration
      8. 8.4.8  Watchdog Timer
      9. 8.4.9  System Reset Function
      10. 8.4.10 Cascading Multiple Devices
      11. 8.4.11 Rail Monitoring
      12. 8.4.12 Status Monitoring
      13. 8.4.13 Data and Error Logging to EEPROM Memory
      14. 8.4.14 Black Box First Fault Logging
      15. 8.4.15 PMBus Address Selection
      16. 8.4.16 ADC Reference
      17. 8.4.17 Device Reset
      18. 8.4.18 Brownout
      19. 8.4.19 Internal Fault Management
      20. 8.4.20 Single Event Upset
    5. 8.5 Device Configuration and Programming
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 社区资源
    2. 12.2 接收文档更新通知
    3. 12.3 商标
    4. 12.4 静电放电警告
    5. 12.5 术语表
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

Logic GPO

UCD90320U also has 16 dedicated Logic GPO (LGPO) pins. The configuration window is under Pin Assignment tab, as shown in Figure 19.

UCD90320U LGPO config.pngFigure 19. Logic GPO Configuration Window (Hardware Configure ► Monitor and GPIO Pins Assignment)

Each LGPO is controlled by an internal Boolean logic builder. Figure 20 shows the configuration interface of the Boolean logic builder. As shown, each Boolean logic builder has a top-level logic gate, which can be configured as AND, OR, or NOR gate with optional time delay. The inputs of the top-level logic gate are two AND paths. Each AND path can select a variety of inputs including GPI states, LGPO states, rails' enable pin states,and rail statuses, as shown in Figure 21. The selectable rail statuses are summarized in Table 3. In Table 3, _LATCH type statuses stay asserted until cleared by a MFR PMBus command or by a specially configured GPI pin shown in Figure 12. See the UCD90320U Sequencer and System Health Controller PMBus Command Reference for complete definitions of rail-status types.

UCD90320U boolean_logic_builder_interface_slusdc1.pngFigure 20. Boolean Logic Builder Interface
UCD90320U AND path slusdc1.pngFigure 21. AND Path Configuration

Table 3. Selectable Rail Statuses in Boolean Logic Builder

Rail-Status Types
POWER_GOOD IOUT_OC_FAULT TON_MAX_FAULT
MARGIN_EN IOUT_OC_WARN TOFF_MAX_WARN
MRG_LOW_nHIGH IOUT_UC_FAULT TON_MAX_FAULT_LATCH
VOUT_OV_FAULT IOUT_OC_FAULT_LATCH TOFF_MAX_WARN_LATCH
VOUT_OV_WARN IOUT_OC_WARN_LATCH SEQ_ON_TIMEOUT
VOUT_UV_WARN IOUT_UC_FAULT_LATCH SEQ_OFF_TIMEOUT
VOUT_UV_FAULT TEMP_OT_FAULT SEQ_ON_TIMEOUT_LATCH
VOUT_OV_FAULT_LATCH TEMP_OT_WARN SEQ_OFF_TIMEOUT_LATCH
VOUT_OV_WARN_LATCH TEMP_OT_FAULT_LATCH SYSTEM_WATCHDOG_TIMEOUT
VOUT_UV_WARN_LATCH TEMP_OT_WARN_LATCH SYSTEM_WATCHDOG_TIMEOUT_LATCH
VOUT_UV_FAULT_LATCH SINGLE_EVENT_UPSET

The POWER_GOOD status used by GPO evaluation is based on actual monitoring result from AMON or DMON pins. For a rail that does not have a voltage monitor pin, the POWER_GOOD status is used by sequencing purpose only, and is not used by GPO evaluation. Therefore during GPO evaluation, a rail without an AMON or DMON pin never reports POWER_GOOD status.

Each LGPO can be also configured as a simple state machine, as shown in Figure 16. In state machine mode, the top-level logic gate is omitted and only one of the two AND paths is evaluated. The output of the state machine is the result of the active AND path. The evaluation initially starts with AND Path #1. If the evaluation result is TRUE, AND Path #1 remains active until its evaluation result becomes FALSE. When the output associates with AND Path#1 becomes FALSE, AND Path #2 becomes active in the next evaluation cycle. AND Path #2 remains active until its evaluation result becomes TRUE, then AND Path #1 becomes active in the next evaluation cycle. An evaluation cycle is triggered when any input signal to the state machine changes state.

GPO1 to GPO8 outputs are internally synchronized to the same clock edge to enable them to change states together. GPO9 to GPO16 outputs are internally synchronized to enable them to change states together. GPO1 through GPIO8 and GPO9 through GPIO16 outputs status are updated within an time window between approximately 1 µs and 3 µs.