SLVSGB5 August   2022 TPS56C231

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

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RNN|18
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.6 Typical Characteristics

TJ = –40°C to 125°C, VIN = 12 V(unless otherwise noted)

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 TPS56C231 Current Limit vs Temperature
Figure 6-11 Efficiency, DCM Mode, fSW = 400 kHz
Figure 6-13 Efficiency, DCM Mode, fSW = 800 kHz
Figure 6-15 Efficiency, DCM Mode, fSW = 1200 kHz
Figure 6-17 Efficiency, DCM Mode, fSW = 400 kHz
Figure 6-19 Efficiency, DCM Mode, fSW = 800 kHz
Figure 6-21 Efficiency, DCM Mode, fSW = 1200 kHz
Figure 6-23 Efficiency, Ext-VCC vs Internal-VCC, DCM Mode, fSW = 800 kHz
Figure 6-25 fSW Load Regulation, DCM Mode, fSW = 400 kHz
Figure 6-27 fSW Load Regulation, DCM Mode, fSW = 1200 kHz
Figure 6-29 fSW Load Regulation, FCCM Mode, fSW = 800 kHz
Figure 6-31 fSW Load Regulation, FCCM Mode, fSW = 400 kHz
Figure 6-33 fSW Load Regulation, FCCM Mode, fSW = 1200 kHz
Figure 6-35 fSW Load Regulation, DCM Mode, 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 TPS56C231L Current Limit vs Temperature
Figure 6-12 Efficiency, FCCM Mode, fSW = 400 kHz
Figure 6-14 Efficiency, FCCM Mode, fSW = 800 kHz
Figure 6-16 Efficiency, FCCM Mode, fSW = 1200 kHz
Figure 6-18 Efficiency, FCCM Mode, fSW = 400 kHz
Figure 6-20 Efficiency, FCCM Mode, fSW = 800 kHz
Figure 6-22 Efficiency, FCCM Mode, fSW = 1200 kHz
Figure 6-24 Load Regulation, fSW = 800 kHz
Figure 6-26 fSW Load Regulation, DCM Mode, fSW = 800 kHz
Figure 6-28 fSW Load Regulation, FCCM Mode, fSW = 400 kHz
Figure 6-30 fSW Load Regulation, FCCM Mode, fSW = 1200 kHz
Figure 6-32 fSW Load Regulation, FCCM Mode, fSW = 800 kHz
Figure 6-34 fSW Load Regulation, DCM Mode, fSW = 400 kHz
Figure 6-36 fSW Load Regulation, DCM Mode, fSW = 1200 kHz