SLVSGV8 October   2022 TPS568231

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  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  PWM Operation and D-CAP3™ Control Mode
      2. 7.3.2  Eco-mode™ Control
      3. 7.3.3  4.7-V LDO
      4. 7.3.4  MODE Selection
      5. 7.3.5  Soft Start and Prebiased Soft Start
      6. 7.3.6  Enable and Adjustable UVLO
      7. 7.3.7  Power Good
      8. 7.3.8  Overcurrent Protection and Undervoltage Protection
      9. 7.3.9  UVLO Protection
      10. 7.3.10 Thermal Shutdown
      11. 7.3.11 Output Voltage Discharge
    4. 7.4 Device Functional Modes
      1. 7.4.1 Light Load Operation
      2. 7.4.2 Standby Operation
  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 External Component Selection
          1. 8.2.2.1.1 Output Voltage Set Point
          2. 8.2.2.1.2 Switching Frequency and MODE Selection
          3. 8.2.2.1.3 Inductor Selection
          4. 8.2.2.1.4 Output Capacitor Selection
          5. 8.2.2.1.5 Input Capacitor Selection
      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
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.6 Typical Characteristics

VIN = 12 V. TJ = –40°C to 125°C（unless otherwise specified).

Figure 6-1 Quiescent Current vs Temperature
Figure 6-3 Reference Voltage vs Temperature
Figure 6-5 Low-Side RDS(on) vs Temperature
Figure 6-7 Enable Pullup Current, VEN = 1 V
Figure 6-9 TPS568231 Current Limit (lLIM) vs Temperature
Figure 6-11 Efficiency, Mode = DCM, fSW = 400 kHz
Figure 6-13 Efficiency, Mode = DCM, fSW = 800 kHz
Figure 6-15 Efficiency, Mode = DCM, fSW = 1200 kHz
Figure 6-17 Efficiency, Mode = DCM, fSW = 400 kHz
Figure 6-19 Efficiency, Mode = DCM, fSW = 800 kHz
Figure 6-21 Efficiency, Mode = DCM, fSW = 1200 kHz
Figure 6-23 Efficiency, Ext-VCC vs Internal-VCC, Mode = DCM, fSW = 800 kHz
Figure 6-25 fSW Load Regulation, Mode = DCM, fSW = 400 kHz
Figure 6-27 fSW Load Regulation, Mode = DCM, fSW = 1200 kHz
Figure 6-29 fSW Load Regulation, Mode = FCCM, fSW = 800 kHz
Figure 6-31 fSW Load Regulation, Mode = FCCM, fSW = 400 kHz
Figure 6-33 fSW Load Regulation, Mode = FCCM, fSW = 1200 kHz
Figure 6-35 fSW Load Regulation, Mode = DCM, fSW = 800 kHz
Figure 6-2 Shutdown Current vs Temperature
Figure 6-4 High-Side RDS(on) vs Temperature
Figure 6-6 Soft-Start Charge Current vs Temperature
Figure 6-8 Enable Pullup Current, VEN = 1.3 V
Figure 6-10 TPS568231 Current Limit(lLIM-1) vs Temperature
Figure 6-12 Efficiency, Mode = FCCM, fSW = 400 kHz
Figure 6-14 Efficiency, Mode = FCCM, fSW = 800 kHz
Figure 6-16 Efficiency, Mode = FCCM, fSW = 1200 kHz
Figure 6-18 Efficiency, Mode = FCCM, fSW = 400 kHz
Figure 6-20 Efficiency, Mode = FCCM, fSW = 800 kHz
Figure 6-22 Efficiency, Mode = FCCM, fSW = 1200 kHz
Figure 6-24 Load Regulation, fSW = 800 kHz
Figure 6-26 fSW Load Regulation, Mode = DCM, fSW = 800 kHz
Figure 6-28 fSW Load Regulation, Mode = FCCM, fSW = 400 kHz
Figure 6-30 fSW Load Regulation, Mode = FCCM, fSW = 1200 kHz
Figure 6-32 fSW Load Regulation, Mode = FCCM, fSW = 800 kHz
Figure 6-34 fSW Load Regulation, Mode = DCM, fSW = 400 kHz
Figure 6-36 fSW Load Regulation, Mode = DCM, fSW = 1200 kHz