SLVA514C July   2014  – November 2022 TPS62125

 

  1.   Using the TPS62125 in an Inverting Buck-Boost Topology
  2.   Trademarks
  3. 1Inverting Buck-Boost Topology
    1. 1.1 Design Considerations
    2. 1.2 Concept
    3. 1.3 Output Current Calculations
    4. 1.4 VIN and VOUT Range
  4. 2Digital Pin Configurations
    1. 2.1 Enable Pin
    2. 2.2 Enable Hysteresis Pin
    3. 2.3 Power Good Pin
    4. 2.4 Discharging the Output Voltage
  5. 3Startup Behavior and Switching Node Consideration
  6. 4External Component Selection
    1. 4.1 Inductor Selection
    2. 4.2 Input Capacitor Selection
    3. 4.3 Selecting L and COUT for Stability
  7. 5Typical Performance and Waveforms
  8. 6Conclusion
  9. 7References
  10. 8Revision History

8 Revision History

Changes from Revision B (July 2014) to Revision C (December 2022)

  • Updated the numbering format for tables, figures, and cross-references throughout the documentGo
  • Added Design Consideration topic for inverting buck-boost application issueGo

Changes from Revision A (September 2013) to Revision B (June 2014)

  • Updated abstract textGo
  • Updated descriptions of both figures in the first paragraph of the Concept topicGo
  • Updated TPS62125 Buck Topology and TPS62125 Inverting Buck-Boost Topology figuresGo
  • Updated Inverting Buck-Boost Configuration figureGo
  • Updated equations in Output Current Calculations section.Go
  • Updated Maximum Output Current versus Input Voltage figure, Maximum Output Current versus VIN Go
  • Updated Digital Pin Configurations section; headings, text, equations, and imagesGo
  • Updated External Component Selection topicGo
  • Updated Typical Performance and Waveforms topicGo
  • Added Output Voltage Ripple VIN = 5 V and 10-mA Load image.Go
  • Added references to the References sectionGo