SLUAB16 March   2025 LMR51403 , TPS629203

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Input and Output Ripple of Buck Converter in DCM
  6. 3TPS629203 Design Consideration
  7. 4Experimental Results
    1. 4.1 VIN and VOUT Ripple Results
    2.     Efficiency
  8. 5Summary
  9. 6References

5 Summary

This document introduces the typical sensor transmitters with the HART protocol working in explosive atmospheres. Based on IEC standards, this application note covers using the device TPS629203 and related methods to design the buck converter system to satisfy input and output capacitance, ripple and efficiency. The pulse frequency modulation (PFM) and DCS control (COT) control theories are also explained to help system designers better understand the application and implement designs.