SLUSEU1A October   2023  – December 2023 TPSM843820

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics (Module)
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  VIN Pins and VIN UVLO
      2. 6.3.2  Enable and Adjustable UVLO
      3. 6.3.3  Adjusting the Output Voltage
      4. 6.3.4  Switching Frequency Selection
      5. 6.3.5  Switching Frequency Synchronization to an External Clock
        1. 6.3.5.1 Internal PWM Oscillator Frequency
        2. 6.3.5.2 Loss of Synchronization
        3. 6.3.5.3 Interfacing the SYNC/FSEL Pin
      6. 6.3.6  Ramp Amplitude Selection
      7. 6.3.7  Soft Start and Prebiased Output Start-Up
      8. 6.3.8  Mode Pin
      9. 6.3.9  Power Good (PGOOD)
      10. 6.3.10 Current Protection
        1. 6.3.10.1 Positive Inductor Current Protection
        2. 6.3.10.2 Negative Inductor Current Protection
      11. 6.3.11 Output Overvoltage and Undervoltage Protection
      12. 6.3.12 Overtemperature Protection
      13. 6.3.13 Output Voltage Discharge
    4. 6.4 Device Functional Modes
      1. 6.4.1 Forced Continuous-Conduction Mode
      2. 6.4.2 Discontinuous Conduction Mode During Soft Start
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 1.0V Output, 1.5MHz Application
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1  Switching Frequency
          2. 7.2.1.2.2  Output Inductor Selection
          3. 7.2.1.2.3  Output Capacitor
          4. 7.2.1.2.4  Input Capacitor
          5. 7.2.1.2.5  Adjustable Undervoltage Lockout
          6. 7.2.1.2.6  Output Voltage Resistors Selection
          7. 7.2.1.2.7  Bootstrap Capacitor Selection
          8. 7.2.1.2.8  BP5 Capacitor Selection
          9. 7.2.1.2.9  PGOOD Pullup Resistor
          10. 7.2.1.2.10 Current Limit Selection
          11. 7.2.1.2.11 Soft-Start Time Selection
          12. 7.2.1.2.12 Ramp Selection and Control Loop Stability
          13. 7.2.1.2.13 MODE Pin
        3. 7.2.1.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
        1. 7.4.2.1 Thermal Performance
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.2.1.3 Application Curves

TPSM843820 EfficiencyFigure 7-4 Efficiency
TPSM843820 Line RegulationFigure 7-6 Line Regulation
TPSM843820 Load Transient
VIN = 12 VIOUT(DC) = 2AISTEP = 4A at 1A/µs
Figure 7-8 Load Transient
TPSM843820 EN Shutdown No Load
VIN = 12VIOUT = 0A
Figure 7-10 EN Shutdown No Load
TPSM843820 EN Start-Up – 0.5V Prebias
VIN = 12VIOUT = 0A
Figure 7-12 EN Start-Up – 0.5V Prebias
TPSM843820 VIN Shutdown
IOUT = 8A
Figure 7-14 VIN Shutdown
TPSM843820 Output Ripple – 8A Load
VIN = 12VIOUT = 8A
Figure 7-16 Output Ripple – 8A Load
TPSM843820 Input Ripple – 8A Load
VIN = 12VIOUT = 8A
Figure 7-18 Input Ripple – 8A Load
TPSM843820 Load RegulationFigure 7-5 Load Regulation
TPSM843820 Bode Plot
VIN = 12 VIOUT = 8A
Figure 7-7 Bode Plot
TPSM843820 EN Start-Up – No Load
VIN = 12VIOUT = 0A
Figure 7-9 EN Start-Up – No Load
TPSM843820 EN Start-Up – With Load
VIN = 12VIOUT = 8A
Figure 7-11 EN Start-Up – With Load
TPSM843820 VIN Start-Up
IOUT = 0A
Figure 7-13 VIN Start-Up
TPSM843820 Output Ripple – No Load
VIN = 12VIOUT = 0A
Figure 7-15 Output Ripple – No Load
TPSM843820 Input Ripple – No Load
VIN = 12VIOUT = 0A
Figure 7-17 Input Ripple – No Load