SLVSH61C March   2025  – November 2025 TPS7H4102-SEP , TPS7H4104-SEP

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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 Quality Conformance Inspection
    7. 6.7 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 VIN and Power VIN Pins (VIN and PVIN)
      2. 8.3.2 Voltage Reference
      3. 8.3.3 Setting VOUTx
        1. 8.3.3.1 VOUTx with Error
        2. 8.3.3.2 Minimum Output Voltage
        3. 8.3.3.3 Maximum Output Voltage
      4. 8.3.4 Enable and EN_SEQ
        1. 8.3.4.1 ENx and External UVLO
        2. 8.3.4.2 Sequence UP/DOWN (EN_SEQ)
      5. 8.3.5 Power Good (PWRGDx)
      6. 8.3.6 Adjustable Switching Frequency, Synchronization (SYNC) and Relative Phase Shift
        1. 8.3.6.1 Internal Clock Mode
        2. 8.3.6.2 External Clock Mode and Switchover
        3. 8.3.6.3 Relative Phase Shift
      7. 8.3.7 Turn-On Behavior
        1. 8.3.7.1 Pulse Skipping During Start-up
        2. 8.3.7.2 Soft-Start (SS_TRx)
        3. 8.3.7.3 Safe Start-up Into Pre-biased Outputs
        4. 8.3.7.4 Tracking and Sequencing (SS_TRx)
      8. 8.3.8 Protection Modes
        1. 8.3.8.1 Overcurrent Protection
          1. 8.3.8.1.1 High-Side Cycle by Cycle Overcurrent Protection (IOC_HSx)
          2. 8.3.8.1.2 Low-Side Sourcing Overcurrent Protection (IOC_LS_SOURCINGx)
          3. 8.3.8.1.3 COMPx Clamp Shutdown (COMPxCLAMP)
          4. 8.3.8.1.4 Low-Side Overcurrent Sourcing and Sinking Protection
        2. 8.3.8.2 Output Overvoltage Protection (OVP)
        3. 8.3.8.3 Thermal Shutdown
      9. 8.3.9 Error Amplifier and Loop Response
        1. 8.3.9.1 Error Amplifier
        2. 8.3.9.2 Power Stage Transconductance
        3. 8.3.9.3 Slope Compensation
        4. 8.3.9.4 Frequency Compensation
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Operating Frequency
        2. 9.2.2.2 Output Inductor Selection
        3. 9.2.2.3 Output Capacitor Selection
        4. 9.2.2.4 Input Capacitor Selection
        5. 9.2.2.5 Soft-Start Capacitor Selection
        6. 9.2.2.6 Undervoltage Lockout (UVLO) Set Point
        7. 9.2.2.7 Output Voltage Feedback Resistor Selection
        8. 9.2.2.8 Slope Compensation Requirements
        9. 9.2.2.9 Compensation Component Selection
      3. 9.2.3 Application Curves
    3. 9.3 Parallel Operation
      1. 9.3.1 Input and Output Capacitance Reduction
        1. 9.3.1.1 Output Capacitance Reduction
        2. 9.3.1.2 Input Capacitance Reduction
    4. 9.4 Termination Guidelines for Unused Channels
    5. 9.5 Power Supply Recommendations
    6. 9.6 Layout
      1. 9.6.1 Layout Guidelines
      2. 9.6.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

9.2.3 Application Curves

The evaluation module for the TPS7H4104 was used to capture the shown waveforms below. The testing conditions were:

  • VIN = PVIN = 5V
  • Switching frequency (fSW) = 500kHz
  • VOUT1 = 0.8V, VOUT2 = 1.2V, VOUT3 = 1.5V and VOUT4 = 1.8V
  • IOUTx=3A
TPS7H4104-SEP TPS7H4102-SEP Rising Full Load Step in VOUT1Figure 9-3 Rising Full Load Step in VOUT1
TPS7H4104-SEP TPS7H4102-SEP Rising Full Load Step in VOUT2Figure 9-5 Rising Full Load Step in VOUT2
TPS7H4104-SEP TPS7H4102-SEP Rising Full Load Step in VOUT3Figure 9-7 Rising Full Load Step in VOUT3
TPS7H4104-SEP TPS7H4102-SEP Rising Full Load Step in VOUT4Figure 9-9 Rising Full Load Step in VOUT4
TPS7H4104-SEP TPS7H4102-SEP Complete Loop Bode Plot for VOUT1
Crossover frequency measured to be 22.5kHz with 61.4 degrees of phase margin.
Figure 9-11 Complete Loop Bode Plot for VOUT1
TPS7H4104-SEP TPS7H4102-SEP Complete Loop Bode Plot for VOUT3
Crossover frequency measured to be 23.9kHz with 68.2 degrees of phase margin.
Figure 9-13 Complete Loop Bode Plot for VOUT3
TPS7H4104-SEP TPS7H4102-SEP Output Voltage Ripple for VOUTxFigure 9-15 Output Voltage Ripple for VOUTx
TPS7H4104-SEP TPS7H4102-SEP Falling Full Load Step in VOUT1Figure 9-4 Falling Full Load Step in VOUT1
TPS7H4104-SEP TPS7H4102-SEP Falling Full Load Step in VOUT2Figure 9-6 Falling Full Load Step in VOUT2
TPS7H4104-SEP TPS7H4102-SEP Falling Full Load Step in VOUT3Figure 9-8 Falling Full Load Step in VOUT3
TPS7H4104-SEP TPS7H4102-SEP Falling Full Load Step in VOUT4Figure 9-10 Falling Full Load Step in VOUT4
TPS7H4104-SEP TPS7H4102-SEP Complete Loop Bode Plot for VOUT2
Crossover frequency measured to be 24.5kHz with 63.3 degrees of phase margin.
Figure 9-12 Complete Loop Bode Plot for VOUT2
TPS7H4104-SEP TPS7H4102-SEP Complete Loop Bode Plot for VOUT4
Crossover frequency measured to be 23kHz with 61.4 degrees of phase margin.
Figure 9-14 Complete Loop Bode Plot for VOUT4