ZHCSIQ0F August   2018  – August 2020 TPS2120 , TPS2121

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     7
  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 Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Input Settling Time and Output Soft Start Control (SS)
        1. 9.3.1.1 Slew Rate vs. CSS Capacitor
      2. 9.3.2 Active Current Limiting (ILM)
      3. 9.3.3 Short-Circuit Protection
      4. 9.3.4 Thermal Protection (TSD)
      5. 9.3.5 Overvoltage Protection (OVx)
      6. 9.3.6 Fast Reverse Current Blocking (RCB)
      7. 9.3.7 Output Voltage Dip and Fast Switchover Control (TPS2121 only)
      8. 9.3.8 Input Voltage Comparator (VCOMP)
    4. 9.4 TPS2120 Device Functional Modes
    5. 9.5 TPS2121 Device Functional Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Manual Switchover Schematic
      2. 10.2.2 Design Requirements
      3. 10.2.3 Detailed Design Description
      4. 10.2.4 Design Procedure
        1. 10.2.4.1 Selecting PR1 and CP2 Resistors
        2. 10.2.4.2 Selecting OVx Resistors
        3. 10.2.4.3 Selecting Soft-Start Capacitor and Current Limit Resistors
      5. 10.2.5 Application Curves
    3. 10.3 Automatic Switchover with Priority (XCOMP)
      1. 10.3.1 Application Schematic
      2. 10.3.2 Design Requirements
      3. 10.3.3 Detailed Design Description
      4. 10.3.4 Design Procedure
        1. 10.3.4.1 Selecting PR1 and CP2 Resistors
      5. 10.3.5 Application Curves
    4. 10.4 Automatic Seamless Switchover with Priority (XREF)
      1. 10.4.1 Application Schematic
      2. 10.4.2 Design Requirements
      3. 10.4.3 Detailed Design Description
      4. 10.4.4 Application Curves
    5. 10.5 Highest Voltage Operation (VCOMP)
      1. 10.5.1 Application Schematic
      2. 10.5.2 Design Requirements
      3. 10.5.3 Detailed Design Description
      4. 10.5.4 Detailed Design Procedure
      5. 10.5.5 Application Curves
    6. 10.6 Reverse Polarity Protection with TPS212x
    7. 10.7 Hotplugging with TPS212x
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Links
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 静电放电警告
    6. 13.6 术语表
  14. 14Mechanical, Packaging, and Orderable Information

Typical Characteristics

GUID-3CBCF0E8-8802-4555-BCC5-6CC073C2556D-low.gif
ILM = 5.2A
Figure 7-1 Quiescent Current vs Input Voltage
GUID-71C3EEDA-65E3-4F4A-81CE-A07CDF28B4C4-low.gif
ILM = 5.2A
Figure 7-3 Standby Current vs Input Voltage
GUID-6273F255-7321-452E-AA5D-E14B00A19A52-low.gif
IOUT = -200 mA
Figure 7-5 TPS2121 On-Resistance vs Input Voltage
GUID-34E47349-F28C-4716-A867-319439136EDC-low.gif
ILM = 1.5A
Figure 7-2 Quiescent Current vs Input Voltage
GUID-2AEA1DF6-9846-40AD-A63B-4C5148DC9EE9-low.gif
ILM = 1.5A
Figure 7-4 Standby Current vs Input Voltage
GUID-F81AC2B9-1809-4F3B-A603-7A5E0F8818D4-low.gif
VIN1 > UVLO VIN2 = 0V
Figure 7-6 Output Slew Rate vs CSS Capacitor
GUID-3357F1DF-6A84-4360-A729-F8EDCC047852-low.png
VIN1 = 12 V VIN2 = 0 V
Figure 7-7 TPS2121 Hot Short on OUT while IN1 is Enabled
GUID-5BCA99AA-EBCE-4074-B684-C511CF4C96FD-low.jpg
VIN1 = 12 V VIN2 = 0 V VOUT = GND
RILM = 71.5kΩ
Figure 7-8 TPS2120 IN1 is Enabled with a Short on OUT