SLVSA67F February   2010  – April 2020 TPS62400-Q1 , TPS62402-Q1 , TPS62404-Q1 , TPS62405-Q1

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      TPS62402-Q1 Efficiency versus Output Current, VOUT1 and VOUT2
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
      1. 9.1.1 Converter 1
      2. 9.1.2 Converter 2
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Enable
      2. 9.3.2 DEF_1 Pin Function
      3. 9.3.3 180° Out-of-Phase Operation
      4. 9.3.4 Short-Circuit Protection
      5. 9.3.5 Thermal Shutdown
      6. 9.3.6 EasyScale Interface: One-Pin Serial Interface for Dynamic Output-Voltage Adjustment
        1. 9.3.6.1 General
        2. 9.3.6.2 Protocol
    4. 9.4 Device Functional Modes
      1. 9.4.1 Power-Save Mode
        1. 9.4.1.1 Dynamic Voltage Positioning
        2. 9.4.1.2 Soft Start
        3. 9.4.1.3 100% Duty-Cycle Low-Dropout Operation
        4. 9.4.1.4 Undervoltage Lockout
      2. 9.4.2 Mode Selection
    5. 9.5 Programming
      1. 9.5.1 Addressable Registers
        1. 9.5.1.1 Bit Decoding
        2. 9.5.1.2 Acknowledge
        3. 9.5.1.3 Mode Selection
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Output Voltage Setting
          1. 10.2.2.1.1 Converter 1 Adjustable Default Output-Voltage Setting: TPS62400-Q1
          2. 10.2.2.1.2 Converter 1 Fixed Default Output-Voltage Setting (TPS62402-Q1, TPS62404-Q1, and TPS62405-Q1)
          3. 10.2.2.1.3 Converter 2 Adjustable Default Output-Voltage Setting (TPS62400-Q1):
          4. 10.2.2.1.4 Converter 2 Fixed Default Output-Voltage Setting
        2. 10.2.2.2 Output Filter Design (Inductor and Output Capacitor)
          1. 10.2.2.2.1 Inductor Selection
          2. 10.2.2.2.2 Output-Capacitor Selection
          3. 10.2.2.2.3 Input Capacitor Selection
      3. 10.2.3 Application Curves
    3. 10.3 System Examples
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Related Links
    3. 13.3 Support Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

10.2.3 Application Curves

TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 eff_io_18_slvsa67.gif
VOUT2 = 1.8 V
Figure 15. Efficiency
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 eff_vi_15_slvsa67.gif
VOUT1 = 1.575 V MODE/DATA = 0
Figure 17. Efficiency versus VIN
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 vo_io_33_slvsa67.gif
VOUT2 = 3.3 V
Figure 19. DC Output Accuracy
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 dc_out2_slvsa67.gif
VOUT1 = 1.575 V L1 = 2.2 μH COUT1 = 22 μF
Figure 21. DC Output Accuracy
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 ll_vo_slvsa67.gif
Power save mode MODE/DATA = low IOUTx = 10 mA
Figure 23. Light-Load Output-Voltage Ripple in Power-Save Mode
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 vo_pwm_slvsa67.gif
PWM mode VOUTx = 1.8 V IOUTx = 400 mA
Figure 25. Output-Voltage Ripple in PWM Mode
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 ld_trns_slvsa67.gif
MODE/DATA = low
Figure 27. Load-Transient Response, PFM-to-PWM
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 line_trn_slvsa67.gif
MODE/DATA = low VIN = 3.6 to 4.6 V VOUT1 = 1.575 V
IOUT1 = 200 mA
Figure 29. Line-Transient Response
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 def1_vo_lvsa67.gif
VIN = 3.6 V MODE/DATA = low IOUT1 = 40 mA
Figure 31. TPS62402-Q1 DEF1_PIN Function for Output-Voltage Selection
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 typ_opr2_slvsa67.gif
VIN = 3.6 V VOUT1 = 1.8 V VOUT2 = 3 V
IOUT1 = IOUT2 = 200 mA
Figure 33. Typical Operation
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 vo_easy_sel_slvsa67.gif
VIN = 3.8 V ACKN = off IOUT1 = 150 mA
REG_DEF_1_Low
Figure 35. VOUT1 Change With EasyScale Interface
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 eff_io_33_slvsa67.gif
VOUT2 = 3.3 V
Figure 16. TPS62400-Q1 Efficiency
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 eff_vi_33_slvsa67.gif
VOUT2 = 3.3 V MODE/DATA = 0
Figure 18. Efficiency versus VIN
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 vo_io_18_slvsa67.gif
VOUT2 = 1.8 V
Figure 20. DC Output Accuracy
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 dc_out_slvsa67.gif
VOUT1 = 1.575 V L1 = 3.3 μH COUT1 = 10 μF
Figure 22. DC Output Accuracy
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 vo_ripp_slvsa67.gif
Forced PWM mode MODE/DATA = high
IOUTx = 10 mA
Figure 24. Output-Voltage Ripple in Forced-PWM Mode
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 pwm_pfm_slvsa67.gif
VOUTx = 1.8 V IOUTx = 20 mA
Figure 26. Forced PWM-to-PFM Mode Transition
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 ld_trns2_slvsa67.gif
PWM mode MODE/DATA = high
Figure 28. Load-Transient Response, PWM Operation
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 startup_slvsa67.gif
VIN = 3.8 V IOUT1max = 400 mA
Figure 30. Start-up Timing, One Converter
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 typ_opr_slvsa67.gif
VIN = 3.6 V VOUT1 = 1.575 V VOUT2 = 1.8 V
IOUT1 = IOUT2 = 200 mA
Figure 32. Typical Operation
TPS62400-Q1 TPS62402-Q1 TPS62404-Q1 TPS62405-Q1 typ_opr3_slvsa67.gif
VIN = 3.6 V VOUT1 = 1.2 V VOUT2 = 1.2 V
IOUT1 = IOUT2 = 200 mA
Figure 34. Typical Operation