SLVSFQ0B October   2020  – June 2024 TPS54J061

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
    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  Enable and Internal LDO
      2. 6.3.2  Split Rail and External LDO
      3. 6.3.3  Output Voltage Setting
      4. 6.3.4  Soft Start and Output-Voltage Tracking
      5. 6.3.5  Frequency and Operation Mode Selection
      6. 6.3.6  D-CAP3™ Control Mode
      7. 6.3.7  Current Sense and Positive Overcurrent Protection
      8. 6.3.8  Low-side FET Negative Current Limit
      9. 6.3.9  Power Good
      10. 6.3.10 Overvoltage and Undervoltage Protection
      11. 6.3.11 Out-Of-Bounds Operation (OOB)
      12. 6.3.12 Output Voltage Discharge
      13. 6.3.13 UVLO Protection
      14. 6.3.14 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Auto-Skip Eco-Mode Light Load Operation
      2. 6.4.2 Forced Continuous-Conduction Mode
      3. 6.4.3 Pre-Bias Start-up
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1  Choose the Switching Frequency and Operation Mode (MODE Pin)
        2. 7.2.2.2  Choose the Output Inductor (L)
        3. 7.2.2.3  Set the Current Limit (TRIP)
        4. 7.2.2.4  Choose the Output Capacitors (COUT)
        5. 7.2.2.5  Choose the Input Capacitors (CIN)
        6. 7.2.2.6  Feedback Network (FB Pin)
        7. 7.2.2.7  Soft Start Capacitor (SS/REFIN Pin)
        8. 7.2.2.8  EN Pin Resistor Divider
        9. 7.2.2.9  VCC Bypass Capacitor
        10. 7.2.2.10 BOOT Capacitor
        11. 7.2.2.11 Series BOOT Resistor and RC Snubber
        12. 7.2.2.12 PGOOD Pullup Resistor
      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 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Support Resources
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Trademarks
    5. 8.5 Glossary
    6. 8.6 Electrostatic Discharge Caution
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Ordering Information

7.2.3 Application Curves

TPS54J061 Efficiency – 1100 kHz, FCCM
VOUT = 1.8 V fSW = 1100 kHz MODE = FCCM
VCC = Int 3.0 V
Figure 7-2 Efficiency – 1100 kHz, FCCM
TPS54J061 Efficiency – 1100 kHz, FCCM, External 3.3-V VCC, 4.7-Ω RBOOT
VOUT = 1.8 V fSW = 1100 kHz MODE = FCCM
VCC = Ext 3.3 V RBOOT = 4.7 Ω
Figure 7-4 Efficiency – 1100 kHz, FCCM, External 3.3-V VCC, 4.7-Ω RBOOT
TPS54J061 Efficiency – 1100 kHz, DCM, External 3.3-V VCC, 4.7-Ω RBOOT
VOUT = 1.8 V fSW = 1100 kHz MODE = DCM
VCC = Ext 3.3 V RBOOT = 4.7 Ω
Figure 7-6 Efficiency – 1100 kHz, DCM, External 3.3-V VCC, 4.7-Ω RBOOT
TPS54J061 Efficiency – 600 kHz, FCCM
VOUT = 1.8 V fSW = 600 kHz MODE = FCCM
VCC = Int 3.0 V
Figure 7-8 Efficiency – 600 kHz, FCCM
TPS54J061 Output Voltage vs Output Current – FCCM
VOUT = 1.8 V fSW = 1100 kHz MODE = FCCM
Figure 7-10 Output Voltage vs Output Current – FCCM
TPS54J061 Output Voltage vs Input Voltage
VOUT = 1.8 V fSW = 1100 kHz
Figure 7-12 Output Voltage vs Input Voltage
TPS54J061 Switching Frequency vs Output Current – 600 kHz
VOUT = 1.8 V fSW = 600 kHz MODE = FCCM
Figure 7-14 Switching Frequency vs Output Current – 600 kHz
TPS54J061 EN Start-Up
VIN = 12 V RLOAD = 0.3 Ω
Figure 7-16 EN Start-Up
TPS54J061 EN Shutdown
VIN = 12 V RLOAD = 0.3 Ω
Figure 7-18 EN Shutdown
TPS54J061 VIN Shutdown
RLOAD = 0.3 Ω
Figure 7-20 VIN Shutdown
TPS54J061 Load Transient – DCM
VIN = 12 V 0.1 A to 3.1 A step 1 A /µsec
MODE = DCM
Figure 7-22 Load Transient – DCM
TPS54J061 Output Voltage Ripple
VIN = 12 V ILOAD = 0.1 A MODE = FCCM
Figure 7-24 Output Voltage Ripple
TPS54J061 Output Voltage Ripple
VIN = 12 V ILOAD = 6 A
Figure 7-26 Output Voltage Ripple
TPS54J061 Overcurrent Response
VIN = 12 V IOUT = 7.5-A Constant Current
Figure 7-28 Overcurrent Response
TPS54J061 Short Circuit Response
VIN = 12 V IOUT = Short
Figure 7-30 Short Circuit Response
TPS54J061 Overcurrent Exit Hiccup
VIN = 12 V IOUT = 7.5-A Constant Current
Figure 7-32 Overcurrent Exit Hiccup
TPS54J061 Efficiency – 1100 kHz, DCM
VOUT = 1.8 V fSW = 1100 kHz MODE = DCM
VCC = Int 3.0 V
Figure 7-3 Efficiency – 1100 kHz, DCM
TPS54J061 Efficiency – 1100 kHz, FCCM, External 3.3-V VCC, 0-Ω RBOOT
VOUT = 1.8 V fSW = 1100 kHz MODE = FCCM
VCC = Ext 3.3 V RBOOT = 0 Ω
Figure 7-5 Efficiency – 1100 kHz, FCCM, External 3.3-V VCC, 0-Ω RBOOT
TPS54J061 Efficiency – 1100 kHz, DCM, External 3.3-V VCC, 0-Ω RBOOT
VOUT = 1.8 V fSW = 1100 kHz MODE = DCM
VCC = Ext 3.3 V RBOOT = 0 Ω
Figure 7-7 Efficiency – 1100 kHz, DCM, External 3.3-V VCC, 0-Ω RBOOT
TPS54J061 Efficiency – 600 kHz, DCM
VOUT = 1.8 V fSW = 600 kHz MODE = DCM
VCC = Int 3.0 V
Figure 7-9 Efficiency – 600 kHz, DCM
TPS54J061 Output Voltage vs Output Current – DCM
VOUT = 1.8 V fSW = 1100 kHz MODE = DCM
Figure 7-11 Output Voltage vs Output Current – DCM
TPS54J061 Switching Frequency vs Output Current – 1100 kHz
VOUT = 1.8 V fSW = 1100 kHz MODE = FCCM
Figure 7-13 Switching Frequency vs Output Current – 1100 kHz
TPS54J061 EN Start-Up
VIN = 12 V RLOAD = 0.3 Ω
Figure 7-15 EN Start-Up
TPS54J061 EN Start-Up – DCM
VIN = 12 V IOUT = 0 A MODE = DCM
Figure 7-17 EN Start-Up – DCM
TPS54J061 VIN Start-Up
RLOAD = 0.3 Ω
Figure 7-19 VIN Start-Up
TPS54J061 Load Transient – FCCM
VIN = 12 V 0.1 A to 3.1 A step 1 A/µsec
MODE = FCCM
Figure 7-21 Load Transient – FCCM
TPS54J061 Bode Plot
VIN = 12 V IOUT = 6 A
Figure 7-23 Bode Plot
TPS54J061 Output Voltage Ripple – DCM
VIN = 12 V ILOAD = 0.1 A MODE = DCM
Figure 7-25 Output Voltage Ripple – DCM
TPS54J061 EN Start-Up With Prebias
VIN = 12 V IOUT = 0 A Prebias = 1.0 V
Figure 7-27 EN Start-Up With Prebias
TPS54J061 Overcurrent Response
VIN = 12 V IOUT = 7.5-A Constant Current
Figure 7-29 Overcurrent Response
TPS54J061 Overcurrent Enter Hiccup
VIN = 12 V IOUT = 7.5-A Constant Current
Figure 7-31 Overcurrent Enter Hiccup