ZHCSF61B October   2015  – June 2017 TPS65321-Q1

PRODUCTION DATA.  

1. 1 特性
2. 2 应用
3. 3 说明
4. 4 修订历史记录
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 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 Buck Regulator
         1. 7.3.1.1  Fixed-Frequency PWM Control
         2. 7.3.1.2  Slope Compensation Output
         3. 7.3.1.3  Pulse-Skip Eco-mode™ Control Scheme
         4. 7.3.1.4  Dropout Mode Operation and Bootstrap Voltage (BOOT)
         5. 7.3.1.5  Error Amplifier
         6. 7.3.1.6  Voltage Reference
         7. 7.3.1.7  Adjusting the Output Voltage
         8. 7.3.1.8  Soft-Start Pin (SS)
         9. 7.3.1.9  Reset Output, nRST
         10. 7.3.1.10 Overload-Recovery Circuit
         11. 7.3.1.11 Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
         12. 7.3.1.12 Overcurrent Protection and Frequency Shift
         13. 7.3.1.13 Selecting the Switching Frequency
         14. 7.3.1.14 How to Interface to RT/CLK Pin
         15. 7.3.1.15 Overvoltage Transient Protection
         16. 7.3.1.16 Small-Signal Model for Loop Response
         17. 7.3.1.17 Simple Small-Signal Model for Peak-Current Mode Control
         18. 7.3.1.18 Small-Signal Model for Frequency Compensation
      2. 7.3.2 LDO Regulator
         1. 7.3.2.1 Charge-Pump Operation
         2. 7.3.2.2 Low-Voltage Tracking
         3. 7.3.2.3 Adjusting the Output Voltage
      3. 7.3.3 Thermal Shutdown
      4. 7.3.4 Enable and Undervoltage Lockout
   4. 7.4 Device Functional Modes
8. 8 Application and Implementation
   1. 8.1 Application Information
      1. 8.1.1 Soft-Start Discharge
      2. 8.1.2 Passive Discharge Through a Resistor in Parallel With the SS Capacitor
      3. 8.1.3 Active Discharge Through A NPN Transistor
   2. 8.2 Typical Application
      1. 8.2.1 2.2-MHzSwitching Frequency, 9-V to 16-V Input, 3.3-V Output Buck Regulator, 5-V Output LDO Regulator
         1. 8.2.1.1 Design Requirements
         2. 8.2.1.2 Detailed Design Procedure
            1. 8.2.1.2.1  Switching Frequency Selection for the Buck Regulator
            2. 8.2.1.2.2  Output Inductor Selection for the Buck Regulator
            3. 8.2.1.2.3  Output Capacitor Selection for the Buck Regulator
            4. 8.2.1.2.4  Catch Diode Selection for the Buck Regulator
            5. 8.2.1.2.5  Input Capacitor Selection for the Buck Regulator
            6. 8.2.1.2.6  Soft-Start Capacitor Selection for the Buck Regulator
            7. 8.2.1.2.7  Bootstrap Capacitor Selection for the Buck Regulator
            8. 8.2.1.2.8  Output Voltage and Feedback Resistor Selection for the Buck Regulator
            9. 8.2.1.2.9  Frequency Compensation Selection for the Buck Regulator
            10. 8.2.1.2.10 LDO Regulator
            11. 8.2.1.2.11 Power Dissipation
                1. 8.2.1.2.11.1 Power Dissipation Losses of the Buck Regulator
            12. 8.2.1.2.12 Power Dissipation Losses of the LDO Regulator
            13. 8.2.1.2.13 Total Device Power Dissipation Losses and Junction Temperature
         3. 8.2.1.3 Application Curves
      2. 8.2.2 Design Example With 500-kHz Switching Frequency
         1. 8.2.2.1 Design Requirements
         2. 8.2.2.2 Detailed Design Procedure
            1. 8.2.2.2.1 Selecting the Switching Frequency
            2. 8.2.2.2.2 Output Inductor Selection
            3. 8.2.2.2.3 Output Capacitor
            4. 8.2.2.2.4 Compensation
         3. 8.2.2.3 Application Curve
9. 9 Power Supply Recommendations
10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
11. 11器件和文档支持
    1. 11.1 文档支持
       1. 11.1.1 相关文档
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 Glossary
12. 12机械、封装和可订购信息