SLVSGC5E January   2023  – October 2025 TPS62870 , TPS62871 , TPS62872 , TPS62873

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Options
  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 I2C Interface Timing Characteristics
    7. 6.7 Timing Requirements
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Fixed-Frequency DCS-Control Topology
      2. 7.3.2  Forced PWM and Power Save Modes
      3. 7.3.3  Precise Enable
      4. 7.3.4  Start-Up
      5. 7.3.5  Switching Frequency Selection
      6. 7.3.6  Output Voltage Setting
        1. 7.3.6.1 Output Voltage Range
        2. 7.3.6.2 Output Voltage Setpoint
        3. 7.3.6.3 Non-Default Output Voltage Setpoint
        4. 7.3.6.4 Dynamic Voltage Scaling
      7. 7.3.7  Compensation (COMP)
      8. 7.3.8  Mode Selection and Clock Synchronization (MODE/SYNC)
      9. 7.3.9  Spread Spectrum Clocking (SSC)
      10. 7.3.10 Output Discharge
      11. 7.3.11 Undervoltage Lockout (UVLO)
      12. 7.3.12 Overvoltage Lockout (OVLO)
      13. 7.3.13 Overcurrent Protection
        1. 7.3.13.1 Cycle-by-Cycle Current Limiting
        2. 7.3.13.2 Hiccup Mode
        3. 7.3.13.3 Current Limit Mode
      14. 7.3.14 Power Good (PG)
        1. 7.3.14.1 Standalone or Primary Device Behavior
        2. 7.3.14.2 Secondary Device Behavior
      15. 7.3.15 Remote Sense
      16. 7.3.16 Thermal Warning and Shutdown
      17. 7.3.17 Stacked Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-On Reset
      2. 7.4.2 Undervoltage Lockout
      3. 7.4.3 Standby
      4. 7.4.4 On
    5. 7.5 Programming
      1. 7.5.1 Serial Interface Description
      2. 7.5.2 Standard, Fast, Fast Mode Plus Protocol
      3. 7.5.3 I2C Update Sequence
      4. 7.5.4 I2C Register Reset
  9. 8 Register Map
  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 Selecting the Inductor
        2. 9.2.2.2 Selecting the Input Capacitors
        3. 9.2.2.3 Selecting the Compensation Resistor
        4. 9.2.2.4 Selecting the Output Capacitors
        5. 9.2.2.5 Selecting the Compensation Capacitor, CC
        6. 9.2.2.6 Selecting the Compensation Capacitor, CC2
      3. 9.2.3 Application Curves
    3. 9.3 Best Design Practices
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    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

All application curves are obtained with L = 110nH (Coilcraft XGL4020-111ME) and fsw = 2.25MHz, unless noted otherwise.

TPS62870 TPS62871 TPS62872 TPS62873 Efficiency
VOUT = 0.4V
Figure 9-2 Efficiency
TPS62870 TPS62871 TPS62872 TPS62873 Efficiency
VOUT = 0.5V
Figure 9-4 Efficiency
TPS62870 TPS62871 TPS62872 TPS62873 Efficiency
VOUT = 0.75V
Figure 9-6 Efficiency
TPS62870 TPS62871 TPS62872 TPS62873 Efficiency
VOUT = 0.875V
Figure 9-8 Efficiency
TPS62870 TPS62871 TPS62872 TPS62873 Efficiency
VOUT = 1.05V
Figure 9-10 Efficiency
TPS62870 TPS62871 TPS62872 TPS62873 Line Regulation
IOUT = 10A
Figure 9-12 Line Regulation
TPS62870 TPS62871 TPS62872 TPS62873 Line Transient ResponseFigure 9-14 Line Transient Response
TPS62870 TPS62871 TPS62872 TPS62873 PWM-CCM Operation
IOUT = 2A
Figure 9-16 PWM-CCM Operation
TPS62870 TPS62871 TPS62872 TPS62873 PFM Operation
IOUT = 75mA
Figure 9-18 PFM Operation
TPS62870 TPS62871 TPS62872 TPS62873 Synchronization to an External Clock
Load = 0.75ΩFSEL = 2.25MHzf(SYNC) = 2MHz
Figure 9-20 Synchronization to an External Clock
TPS62870 TPS62871 TPS62872 TPS62873 Shutdown Using the EN Pin (Discharge Enabled)
Load = 7.5Ω
Figure 9-22 Shutdown Using the EN Pin (Discharge Enabled)
TPS62870 TPS62871 TPS62872 TPS62873 Current Limit (Hiccup)Figure 9-24 Current Limit (Hiccup)
TPS62870 TPS62871 TPS62872 TPS62873 Load Regulation
VOUT = 0.4V
Figure 9-3 Load Regulation
TPS62870 TPS62871 TPS62872 TPS62873 Load Regulation
VOUT = 0.5V
Figure 9-5 Load Regulation
TPS62870 TPS62871 TPS62872 TPS62873 Load Regulation
VOUT = 0.75V
Figure 9-7 Load Regulation
TPS62870 TPS62871 TPS62872 TPS62873 Load Regulation
VOUT = 0.875V
Figure 9-9 Load Regulation
TPS62870 TPS62871 TPS62872 TPS62873 Load Regulation
VOUT = 1.05V
Figure 9-11 Load Regulation
TPS62870 TPS62871 TPS62872 TPS62873 Output Voltage Ripple
IOUT = 15AVOUT = 0.875V
Figure 9-13 Output Voltage Ripple
TPS62870 TPS62871 TPS62872 TPS62873 Load Transient Response
ΔIOUT = 7.5A CH1 = 50mV/A
Figure 9-15 Load Transient Response
TPS62870 TPS62871 TPS62872 TPS62873 PWM-DCM Operation
IOUT = 750mA
Figure 9-17 PWM-DCM Operation
TPS62870 TPS62871 TPS62872 TPS62873 Spread Spectrum Operation
VOUT = 0.75VIOUT = 11.5A
Figure 9-19 Spread Spectrum Operation
TPS62870 TPS62871 TPS62872 TPS62873 Start-Up Using the EN Pin
Load = 0.75Ω
Figure 9-21 Start-Up Using the EN Pin
TPS62870 TPS62871 TPS62872 TPS62873 Shutdown (Discharge disabled)
Load = 7.5Ω
Figure 9-23 Shutdown (Discharge disabled)