SLVS324C July   2001  – October 2020 TPS60400 , TPS60401 , TPS60402 , TPS60403

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Charge-Pump Output Resistance
      2. 8.3.2 Efficiency Considerations
    4. 8.4 Device Functional Modes
      1. 8.4.1 Active-Schottky Diode
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Voltage Inverter
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Capacitor Selection
          2. 9.2.1.2.2 Input Capacitor (CI)
          3. 9.2.1.2.3 Flying Capacitor (C(fly))
          4. 9.2.1.2.4 Output Capacitor (CO)
          5. 9.2.1.2.5 Power Dissipation
        3. 9.2.1.3 Application Curves
    3. 9.3 System Examples
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Device Family Products
    2. 12.2 Related Links
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DBV|5
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Efficiency Considerations

The power efficiency of a switched-capacitor voltage converter is affected by three factors: the internal losses in the converter IC, the resistive losses of the capacitors, and the conversion losses during charge transfer between the capacitors. The internal losses are associated with the internal functions of the IC, such as driving the switches, oscillator, and so forth. These losses are affected by operating conditions such as input voltage, temperature, and frequency. The next two losses are associated with the output resistance of the voltage converter circuit. Switch losses occur because of the on-resistance of the MOSFET switches in the IC. Charge-pump capacitor losses occur because of their ESR. The relationship between these losses and the output resistance is as follows:

Equation 3. GUID-B60433CB-F95B-4F67-B668-4F9A3D1DF21B-low.gif

The first term is the effective resistance from an ideal switched-capacitor circuit. Conversion losses occur during the charge transfer between C(fly) and CO when there is a voltage difference between them. The power loss is:

Equation 4. GUID-F276E608-517A-4035-BF66-C55A2EF032C5-low.gif

The efficiency of the TPS6040x devices is dominated by their quiescent supply current at low output current and by their output impedance at higher current.

Equation 5. GUID-971AC951-7DE0-4B79-A269-C81368AE42F5-low.gif

Where, IQ = quiescent current.