ZHCSUF1 January   2024 TPS7H3014-SP

ADVANCE INFORMATION  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Device Options
  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 Timing Requirements
    7. 6.7 Quality Conformance Inspection
    8. 6.8 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 Input Voltage (IN), VLDO and REFCAP
        1. 7.3.1.1 Undervoltage Lockout (VPOR_IN < VIN < UVLO)
        2. 7.3.1.2 Power-On Reset (VIN < VPOR_IN )
      2. 7.3.2 SENSEx Inputs
        1. 7.3.2.1 VTH_SENSEX and VONx
        2. 7.3.2.2 IHYS_SENSEx and VOFFx
        3. 7.3.2.3 Top and Bottom Resistive Divider Design Equations
      3. 7.3.3 Output Stages (ENx,SEQ_DONE,PWRGD,PULL_UP1 and PULL_UP2)
      4. 7.3.4 User-Programmable TIMERS
        1. 7.3.4.1 DLY_TMR
        2. 7.3.4.2 REG_TMR
      5. 7.3.5 UP and DOWN
      6. 7.3.6 FAULT
      7. 7.3.7 State Machine
    4. 7.4 Daisy Chain
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Self Contained – Sequence UP and DOWN
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Input Power Supplies and Decoupling Capacitors
          2. 8.2.1.2.2 UP and DOWN Thresholds
          3. 8.2.1.2.3 SENSEx Thresholds
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
    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 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

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7.3.4 User-Programmable TIMERS

The TPS7H3014 has two global (or common to all SENSEx channels) adjustable timers:

  • DLY_TMR
  • REG_TMR

Both timers are programmed via a single resistor from the DLY_TMR and REG_TMR pin to GND. The resistors are used to program the internal oscillator frequency of the timers. Leaving the DLY_TMR or the REG_TMR pin floating will disable the timer, respectively. The range for both timers is 250μs to 25ms.

Note: Timers conditions must be valid at power up and must not be dynamically changed.

Figure 7-8 shows a sequence up and down assuming no faults and UP/DOWN pins tied together. The DLY_TMR is shown in orange and the REG_TMR time is shown with arrows (starting from ENx going high).

GUID-20221104-SS0I-WK4Z-HDGT-ZBKGSHXJ4XWK-low.svg Figure 7-8 Sequence UP and DOWN

A. It's important to notice the tpd_ENx, tpd_PWRGD, and tpD_SEQ_DONE in blue. This is a propagation delay in the outputs (ENx,PWRGD and SEQ_DONE). If no DLY_TMR (floating) is used, the output signals will change to the valid state after this delay. When using the DLY_TMR, then this time has to be added to the programmed timer time.
B. The REG_TMR is only valid during sequence up.