SLVA469D June   2013  – January 2023 TLV62130 , TLV62130A , TLV62150 , TLV62150A , TPS61175 , TPS61175-Q1 , TPS62130 , TPS62130A , TPS62131 , TPS62132 , TPS62133 , TPS62135 , TPS62136 , TPS62140 , TPS62140A , TPS62141 , TPS62142 , TPS62143 , TPS62150 , TPS62150A , TPS62151 , TPS62152 , TPS62153 , TPS62160 , TPS62161 , TPS62162 , TPS62163 , TPS62170 , TPS62171 , TPS62172 , TPS62173

 

  1.   Using the TPS6215x in an Inverting Buck-Boost Topology
  2.   Trademarks
  3. 1Inverting Buck-Boost Topology
    1. 1.1 Concept
    2. 1.2 Output Current Calculations
    3. 1.3 VIN and VOUT Range
  4. 2Design Considerations
    1. 2.1 Design Precautions
    2. 2.2 Additional Input Capacitor
    3. 2.3 Digital Pin Configurations
      1. 2.3.1 Digital Input Pins (EN, FSW, DEF)
      2. 2.3.2 Power Good Pin
    4. 2.4 Startup Behavior and Switching Node Consideration
  5. 3External Component Selection
    1. 3.1 Inductor Selection
    2. 3.2 Capacitor Selection
  6. 4Typical Performance
  7. 5Conclusion
  8. 6References
  9. 7Revision History

6 References

The following documents are available for download from the TI web site:

  1. Daniels, David G. (2009). Creating an inverting power supply from a step-down regulator. Application report SLVA317.
  2. TPS62130 product data sheet. Literature number SLVSAG7.
  3. TPS62140 product data sheet. Literature number SLVSAJ0.
  4. TPS62150 product data sheet. Literature number SLVSAL5.
  5. TPS62160 product data sheet. Literature number SLVSAM2.
  6. TPS62170 product data sheet. Literature number SLVSAT8.
  7. Tucker, J. (2007). Using a buck converter in an inverting buck-boost topology. Technical brief SLYT286.
  8. Tucker, J. (2007). Using the TPS5430 as an inverting buck-boost converter. Application report SLVA257.
  9. DCS-Control™ Landing Page: www.ti.com/dcs-control