ZHCSP59B October   2021  – June 2022 TPS631000

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Rating
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics 
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Undervoltage Lockout (UVLO)
      2. 7.3.2 Enable and Soft Start
      3. 7.3.3 Adjustable Output Voltage
      4. 7.3.4 Mode Selection (PFM/FPWM)
      5. 7.3.5 Reverse Current Operation
      6. 7.3.6 Protection Features
        1. 7.3.6.1 Input Overvoltage Protection
        2. 7.3.6.2 Output Overvoltage Protection
        3. 7.3.6.3 Short Circuit Protection
        4. 7.3.6.4 Thermal Shutdown
    4. 7.4 Device Functional Modes
  8. 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
        1. 8.2.2.1 Custom Design with WEBENCH Tools
        2. 8.2.2.2 Inductor Selection
        3. 8.2.2.3 Output Capacitor Selection
        4. 8.2.2.4 Input Capacitor Selection
        5. 8.2.2.5 Setting the Output Voltage
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 第三方产品免责声明
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design with WEBENCH Tools
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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8.2.3 Application Curves

VOUT = 3.3 V
Figure 8-2 Typical Output Current Capability vs Input Voltage
VOUT = 3.3 V MODE = High
Figure 8-4 Load Regulation (FPWM)
VO = 3.3 V MODE = High
Figure 8-6 Load Regulation (PFM)
VIN = 3.3 V, VOUT = 3.3 V IOUT = 1 A, MODE = Low
Figure 8-8 Switching Waveforms with 1-A Load
VIN = 4.3 V, VOUT = 3.3 V IOUT = 1 A, MODE = Low
Figure 8-10 Switching Waveforms, Buck Operation with 1-A Load
VIN = 3.6 V, VOUT = 3.3 V Rload = 4 Ω, MODE = Low
Figure 8-12 Start-Up by EN
VIN = 2.7 V, VOUT = 3.3 V IOUT = 100 mA to 1 A with 20-µs slew rate
Figure 8-14 Load Transient at 2.7-V Input Voltage
VIN = 3.6 V, VOUT = 3.3 V IOUT = 100 mA to 1 A with 20-µs slew rate
Figure 8-16 Load Transient at 3.6-V Input Voltage
VIN = 4.3 V, VOUT = 3.3 V IOUT = 100 mA to 1 A with 20-µs slew rate
Figure 8-18 Load Transient at 4.3-V Input Voltage
VIN = 2.7 V to 4.3 V with 20-µs slew rate, VOUT = 3.3 V IOUT = 1 A
Figure 8-20 Line Transient at 1-A Load Current
VIN = 3.6 V, VOUT = 3.3 V IOUT = 1 A, FPWM
Figure 8-22 Output Short Protection (Entry)
VOUT = 3.3 V MODE = High
Figure 8-3 Efficiency vs Output Current (FPWM)
VOUT = 3.3 V MODE = Low
Figure 8-5 Efficiency vs Input Voltage (PFM)
VIN = 2.7 V, VOUT = 3.3 V IOUT = 1 A, MODE = Low
Figure 8-7 Switching Waveforms, Boost Operation with 1-A Load
VIN = 3.6 V, VOUT = 3.3 V IOUT = 1 A, MODE = Low
Figure 8-9 Switching Waveforms with 1-A Load
VIN = 3.6 V, VOUT = 3.3 V IOUT = 1 mA, MODE = Low
Figure 8-11 Switching Waveforms at 1-mA Load
VIN = 3.6 V, VOUT = 3.3 V Rload = 4 Ω, MODE = Low
Figure 8-13 Shutdown by EN
VIN = 2.7 V, VOUT = 3.3 V IOUT = 100 mA to 1-A sweep
Figure 8-15 Load Sweep at 2.7-V Input Voltage
VIN = 3.6 V, VOUT = 3.3 V IOUT = 100 mA to 1-A sweep
Figure 8-17 Load Sweep at 3.6-V Input Voltage
VIN = 4.3 V, VOUT = 3.3 V IOUT = 100 mA to 1-A sweep
Figure 8-19 Load Sweep at 4.3-V Input Voltage
VIN = 2.7-V to 4.3-V sweep, VOUT = 3.3 V IOUT = 1 A
Figure 8-21 Line Sweep at 1-A Load Current
VIN = 3.6 V, VOUT = 3.3 V IOUT = 1 A, FPWM
Figure 8-23 Output Short Protection (Recover)
Table 8-6 Components for Application Characteristic Curves for VOUT = 3.3 V
REFERENCE DESCRIPTION(2) PART NUMBER MANUFACTURER(1)
U1 High Power Density 1.5 A Buck-Boost Converter TPS631000 Texas Instruments
L1 1.0 µH, 2.5 mm x 2.0 mm, 4.3 A, 42 mΩ DFE252012P-1R0M=P2 MuRata
C1 22 µF, 0603, Ceramic Capacitor, ±20%, 6.3 V GRM187R61A226ME15 Murata
C2 47 µF, 0805, Ceramic Capacitor, ±20%, 6.3 V GRM219R60J476ME44 Murata
R1 511 kΩ, 0603 Resistor, 1%, 100 mW Standard Standard
R2 91 kΩ, 0603 Resistor, 1%, 100 mW Standard Standard
(2) For other output voltages, refer to Table 8-5 for resistor values.