SLVS372C June   2001  – October 2015 TPS60240 , TPS60241 , TPS60242 , TPS60243

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Thermal Shutdown
      2. 7.3.2 Current Limit
    4. 7.4 Device Functional Modes
      1. 7.4.1 Start-up Procedure
      2. 7.4.2 Shutdown
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 5-V Low-Noise VCO Supply from 3.3-V Input
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Output Voltage Ripple
        3. 8.2.1.3 Application Curves
      2. 8.2.2 2-V to 3.3-V Low-Noise Converter
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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発注情報

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

8.1 Application Information

The TPS6024x is a switched capacitor voltage converter for VCO and PLL applications providing low noise conversion and tight tolerances. It supports regulated output voltages of 2.7 V, 3 V and 3.3 V from a 1.8-V to 5.5-V input voltage range. The TPS60241 generates 5-V output voltage from an 2.7-V to 5.5-V input voltage range.

8.2 Typical Applications

8.2.1 5-V Low-Noise VCO Supply from 3.3-V Input

TPS60240 TPS60241 TPS60242 TPS60243 typapp2.gif Figure 4. 5-V Low-Noise VCO Supply from 3.3-V Input

8.2.1.1 Design Requirements

The complete charge pump circuitry requires no inductors and only four small ceramic capacitors.

8.2.1.2 Detailed Design Procedure

8.2.1.2.1 Output Voltage Ripple

The output voltage ripple depends on the capacitors used. Table 1 shows the dependence between output voltage ripple and capacitor selection.

Table 1. Output Voltage Ripple and Capacitor Selection(1)

CI CO C1 C2 OUTPUT VOLTAGE RIPPLE
[µVrms]
1 µF 1 µF 1 µF 1 µF 288
2.2 µF 2.2 µF 1 µF 1 µF 212
4.7 µF 4.7 µF 1 µF 1 µF 183
4.7 µF 1 µF 1 µF 1 µF 272
1 µF 4.7 µF 1 µF 1 µF 185
(1) NOTE: VIN = 3.3 V, VOUT = 5 V, RL = 500 Ω, TA = 25°C

For the best output ripple performance, low-ESR ceramic capacitors are recommended (see Table 2).

Table 2. Recommended Capacitors

PART MANUFACTURER PART NUMBER VALUE TOLERANCE DIELECTRIC MATERIAL PACKAGE RATED VOLTAGE
CI Taiyo Yuden LMK212BJ105KG–T 1 µF 10% X7R 0805 10
TDK C2012X5R0J475K 4.7 µF 10% X5R 0805 6.3
CO Taiyo Yuden LMK212BJ105KG–T 1 µF 10% X7R 0805 10
TDK C2012X5R0J475K 4.7 µF 10% X5R 0805 6.3
C1, C2 Taiyo Yuden LMK212BJ105KG–T 1 µF 10% X7R 0805 10
CF Taiyo Yuden LMK212BJ105KG–T 1 µF 10% X7R 0805 10

8.2.1.3 Application Curves

TPS60240 TPS60241 TPS60242 TPS60243 typchar1.gif Figure 5. TPS60240
Efficiency vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar3.gif Figure 7. TPS60242
Efficiency vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar5.gif Figure 9. TPS60240
Efficiency vs Output Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar7.gif Figure 11. TPS60242
Efficiency vs Output Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar9.gif Figure 13. TPS60240
Output Voltage vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar11.gif Figure 15. TPS60242
Output Voltage vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar13.gif Figure 17. TPS60240
Output Voltage vs Output Current
TPS60240 TPS60241 TPS60242 TPS60243 typchar15.gif Figure 19. TPS60242
Output Voltage vs Output Current
TPS60240 TPS60241 TPS60242 TPS60243 typchar17.gif Figure 21. TPS60241
Output Voltage vs Free-Air Temperature
TPS60240 TPS60241 TPS60242 TPS60243 typchar22.gif Figure 23. TPS60240
Maximum Output Current vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar24.gif Figure 25. TPS60242
Maximum Output Current vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar26.gif Figure 27. Load Transient Response
TPS60240 TPS60241 TPS60242 TPS60243 typchar28.gif Figure 29. Line Transient Response
TPS60240 TPS60241 TPS60242 TPS60243 typchar30.gif
NOTE: Scope triggered by voltage at flying capacitors, noise removed by averaging function and bandwidth limit 20 MHz.
Figure 31. TPS60241
Output Voltage Ripple vs Time
TPS60240 TPS60241 TPS60242 TPS60243 typchar2.gif Figure 6. TPS60241
Efficiency vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar4.gif Figure 8. TPS60243
Efficiency vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar6.gif Figure 10. TPS60241
Efficiency vs Output Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar8.gif Figure 12. TPS60243
Efficiency vs Output Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar10.gif Figure 14. TPS60241
Output Voltage vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar12.gif Figure 16. TPS60243
Output Voltage vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar14.gif Figure 18. TPS60241
Output Voltage vs Output Current
TPS60240 TPS60241 TPS60242 TPS60243 typchar16.gif Figure 20. TPS60243
Output Voltage vs Output Current
TPS60240 TPS60241 TPS60242 TPS60243 typchar21.gif Figure 22. TPS60241
Output Noise Voltage vs Output Current
TPS60240 TPS60241 TPS60242 TPS60243 typchar23.gif Figure 24. TPS60241
Maximum Output Current vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar25.gif Figure 26. TPS60243
Maximum Output Current vs Input Voltage
TPS60240 TPS60241 TPS60242 TPS60243 typchar27.gif Figure 28. Start-Up Timing
TPS60240 TPS60241 TPS60242 TPS60243 typchar29.gif Figure 30. TPS60241
Noise Voltage Spectrum

8.2.2 2-V to 3.3-V Low-Noise Converter

Standard application as a low noise boost converter. The device generates a regulated output voltage of 3.3 V from a 2-V supply with only 4 external 1-µF ceramic capacitors.

TPS60240 TPS60241 TPS60242 TPS60243 typapp3.gif Figure 32. 2-V to 3.3-V Low-Noise Converter