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

1 Features

  • 4.5-V to 17-V input range without external bias
  • 3.8-V to 17-V input range with external bias
  • Supports 12-A continuous output current
  • TPS56C231 supports 15-A peak current
  • Integrated 7.8-mΩ and 3.2-mΩ MOSFETs
  • 0.6-V ±1% reference voltage across a –40°C to 125°C junction temperature range
  • 0.6-V to 5.5-V output voltage range
  • 146-μA low quiescent current
  • D-CAP3™ control mode for fast transient response
  • Supports ceramic output capacitors
  • Selectable fSW of 400 kHz, 800 kHz, and 1200 kHz
  • Selectable FCCM (forced continuous conduction mode) for tight output voltage ripple
  • Selectable Eco-mode (auto skip mode) for high light-load efficiency
  • Optional external 5-V bias for enhanced efficiency
  • Prebiased start-up capability
  • Adjustable soft start with a default 1.2-ms soft-start time
  • Power-good indicator to monitor output voltage
  • Two adjustable current limit settings with hiccup restart: TPS56C231 (14.7 A, 17 A) and TPS56C231L (11.5 A, 13.8 A)
  • Non-latched protections for UV, OV, OT, and UVLO
  • Pin-to-pin compatible with 12-A TPS56C215, and 8-A TPS568231 and TPS568215
  • –40°C to 125°C operating junction temperature
  • 3.5-mm × 3.5-mm, 18-pin HotRod™ QFN package