ZHCSQV7A march   2023  – august 2023 TPS2117

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  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 Switching Characteristics
    7. 6.7 Timing Diagrams
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
      1. 7.3.1 Priority and Manual Mode
        1. 7.3.1.1 Priority Switching
        2. 7.3.1.2 Manual Switching
      2. 7.3.2 Diode Mode
    4. 7.4 Feature Description
      1. 7.4.1 Truth Table
      2. 7.4.2 Soft Start
      3. 7.4.3 Status Indication
      4. 7.4.4 Reverse Current Blocking
    5. 7.5 VINx Collapse Rate
    6. 7.6 Fast Switchover Behavior
    7. 7.7 Output Voltage Drop
  9. 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
      3. 8.2.3 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 Trademarks
    4. 9.4 静电放电警告
    5. 9.5 术语表
  11. 10Mechanical, Packaging, and Orderable Information

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7.4.1 Truth Table

Table 7-1 shows the expected behavior of the TPS2117. Manual mode and priority mode require MODE pin to be connected to source that is within the specification for VIH,MODE. This can be either one of the VINx sources or an external bias. For manual mode switching, PR1 is to be controlled via an external source to select between the channels. For priority mode, PR1 voltage is set via a resistor divider from VINx sources. For diode mode, voltage on the MODE pin must be within the specification for VIL,MODE.

Table 7-1 TPS2117 Truth Table
MODE VIN1 VIN2 PR1 ST VOUT

VIN1 or external bias ≥ 1 V

(Priority/manual mode)

 ≥ 1.6 V X(1) ≥ VREF High VIN1
≥ 1.6 V ≥ 1.6 V < VREF Low VIN2
< 1.6 V < 1.6 V X(1) Low Hi-Z
< 1.6 V X(1) ≥ VREF Low Hi-Z

VIN2 or external bias ≥ 1 V

(Priority/manual mode)

 X(1) ≥ 1.6 V < VREF Low VIN2
≥ 1.6 V ≥ 1.6 V ≥ VREF High VIN1
< 1.6 V < 1.6 V X(1) Low Hi-Z
X(1) < 1.6 V < VREF Low Hi-Z

External bias ≤ 0.35 V

(Diode mode)

 X(1) X(1) ≥ VREF Low Hi-Z
> VIN2 and ≥ 1.6 V X(1) < VREF High VIN1
X(1) > VIN1 and ≥ 1.6 V < VREF Low VIN2
(1) X = do not care