SLUAAF4A may   2021  – april 2023 TPS51397A , TPS53318 , TPS53319 , TPS53353 , TPS53355 , TPS548A28 , TPS548A29 , TPS548B22 , TPS548B28 , TPS548D22 , TPS549B22 , TPS549D22 , TPS54J060 , TPS54J061 , TPS54JA20 , TPS54JB20 , TPS566235 , TPS568215 , TPS568230 , TPS56C215 , TPS56C230

 

  1.   Abstract
  2.   Trademarks
  3. 1D-CAP Feedback Loop
  4. 2D-CAP Bode Plot Measurement Setup
  5. 3Bode Plot Measurements
  6. 4Transient Response Waveforms
  7. 5D-CAP2 and D-CAP3 Bode Plot Measurement Setup
  8. 6Measurement Tips
  9. 7Summary
  10. 8References
  11. 9Revision History

Abstract

The stability test is an important part of the evaluation of a DC/DC converter. If done properly, the Bode plot result can be a very quick and useful way to help you gauge the stability of the converter. In the absence of a theoretical analysis, use a network analyzer to measure the Bode plot and confirm the stability of the design. The control-loop gain, which can be plotted in a Bode plot, is a very good indicator of the stability of the DC/DC converter.