SLVSG94B November   2023  – April 2024 TPS62914 , TPS62916 , TPS62918

PRODMIX  

  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
    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  Smart Config (S-CONF)
      2. 6.3.2  Device Enable (EN/SYNC)
      3. 6.3.3  Device Synchronization (EN/SYNC)
      4. 6.3.4  Spread Spectrum Modulation
      5. 6.3.5  Output Discharge
      6. 6.3.6  Undervoltage Lockout (UVLO)
      7. 6.3.7  Power-Good Output
      8. 6.3.8  Noise Reduction and Soft-Start Capacitor (NR/SS)
      9. 6.3.9  Current Limit and Short-Circuit Protection
      10. 6.3.10 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Fixed Frequency Pulse Width Modulation
      2. 6.4.2 Low Duty Cycle Operation
      3. 6.4.3 High Duty Cycle Operation (100% Duty Cycle)
      4. 6.4.4 Second Stage L-C Filter Compensation (Optional)
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 External Component Selection
          1. 7.2.2.2.1 Switching Frequency Selection
          2. 7.2.2.2.2 Inductor Selection for the First L-C Filter
          3. 7.2.2.2.3 Output Capacitor Selection
          4. 7.2.2.2.4 Ferrite Bead Selection for Second L-C Filter
          5. 7.2.2.2.5 Input Capacitor Selection
          6. 7.2.2.2.6 Setting the Output Voltage
          7. 7.2.2.2.7 Bootstrap Capacitor Selection
          8. 7.2.2.2.8 NR/SS Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
      2. 8.1.2 Development Support
        1. 8.1.2.1 Custom Design With WEBENCH® Tools
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 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

5.6 Typical Characteristics

IN = 12 V, VOUT = 1.2 V, TA = 25°C, BOM = Table 7-1, (unless otherwise noted)

TPS62914 TPS62916 TPS62918 VOUT Ripple After the First L-C Filter
12 V to 1.2 V, 2 A 1 μH, 1 MHz First L-C Only
Figure 5-1 VOUT Ripple After the First L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple After the Second L-C Filter
 
12 V to 1.2 V, 2 A 1 μH, 1 MHz First and second L-C
Figure 5-3 VOUT Ripple After the Second L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple After the First L-C Filter
12 V to 1.8 V, 2 A 1 μH, 1.4 MHz First L-C Only
  
Figure 5-5 VOUT Ripple After the First L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple After the Second L-C Filter
12 V to 1.8 V, 2 A 1 μH, 1.4 MHz First and second L-C
 
Figure 5-7 VOUT Ripple After the Second L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple After the First L-C Filter
12 V to 3.3 V, 2 A 1 μH, 2.2 MHz First L-C Only
Figure 5-9 VOUT Ripple After the First L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple After the Second L-C Filter
12 V to 3.3 V, 2 A 1 μH, 2.2 MHz First and second L-C
Figure 5-11 VOUT Ripple After the Second L-C Filter
TPS62914 TPS62916 TPS62918 Output Noise Density vs Frequency
12 V to 1.2 V 1 μH, 1 MHz First L-C Only
NR/SS = Open, 470 nF, 2.2 μF, BW = 100 Hz to 100 kHz
Figure 5-13 Output Noise Density vs Frequency
TPS62914 TPS62916 TPS62918 Output Noise Density vs Frequency
12 V to 1.8 V 1 μH, 1.4 MHz First L-C Only
NR/SS = Open, 470 nF, 2.2 μF, BW = 100 Hz to 100 kHz
Figure 5-15 Output Noise Density vs Frequency
TPS62914 TPS62916 TPS62918 Output Noise Density vs Frequency
12 V to 3.3 V 1 μH, 2.2 MHz First L-C Only
NR/SS = Open, 470 nF, 2.2 μF, BW = 100 Hz to 100 kHz
Figure 5-17 Output Noise Density vs Frequency
TPS62914 TPS62916 TPS62918 VOUT Ripple FFT After the First L-C Filter
12 V to 1.2 V, 2A 1 μH, 2 MHz First L-C Only
BW = 10 kHz
Figure 5-2 VOUT Ripple FFT After the First L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple FFT After the Second L-C Filter
12 V to 1.2 V, 2 A 1 μH, 1 MHz First and second L-C
BW = 10 kHz
Figure 5-4 VOUT Ripple FFT After the Second L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple FFT After the First L-C Filter
12 V to 1.8 V, 2 A 1 μH, 1.4 MHz First L-C Only
  BW = 10 kHz
Figure 5-6 VOUT Ripple FFT After the First L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple FFT After the Second L-C Filter
12 V to 1.8 V, 2 A 1 μH, 1.4 MHz First and second L-C
BW = 10 kHz
Figure 5-8 VOUT Ripple FFT After the Second L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple FFT After the First L-C Filter
12 V to 3.3 V, 2 A 1 μH, 2.2 MHz First L-C Only
BW = 10 kHz
Figure 5-10 VOUT Ripple FFT After the First L-C Filter
TPS62914 TPS62916 TPS62918 VOUT Ripple FFT After the Second L-C Filter
12 V to 3.3 V, 2 A 1 μH, 2.2 MHz First and second L-C
BW = 10 kHz
Figure 5-12 VOUT Ripple FFT After the Second L-C Filter
TPS62914 TPS62916 TPS62918 Output Noise Density vs Frequency
12 V to 1.2 V 1 μH, 1 MHz After ferrite bead filter
NR/SS = Open, 470 nF, 2.2 μF, BW = 100 Hz to 100 kHz
Figure 5-14 Output Noise Density vs Frequency
TPS62914 TPS62916 TPS62918 Output Noise Density vs Frequency
12 V to 1.8 V 1 μH, 1.4 MHz After ferrite bead filter
NR/SS = Open, 470 nF, 2.2 μF, BW = 100 Hz to 100 kHz
Figure 5-16 Output Noise Density vs Frequency
TPS62914 TPS62916 TPS62918 Output Noise Density vs Frequency
12 V to 3.3 V 1 μH, 2.2 MHz After ferrite bead filter
NR/SS = Open, 470 nF, 2.2 μF, BW = 100 Hz to 100 kHz
Figure 5-18 Output Noise Density vs Frequency