SLUAAI0 January   2022 TPS62810-Q1 , TPS62811-Q1 , TPS62812-Q1 , TPS62813-Q1 , TPS62816-Q1 , TPS628501 , TPS628501-Q1 , TPS628502 , TPS628502-Q1 , TPS628503 , TPS628503-Q1 , TPS628510 , TPS628511 , TPS628512 , TPS62870 , TPS62870-Q1 , TPS62871 , TPS62871-Q1 , TPS62872 , TPS62872-Q1 , TPS62873 , TPS62873-Q1 , TPS62874-Q1 , TPS62875-Q1 , TPS62876-Q1 , TPS62877-Q1 , TPS62A01 , TPS62A01A , TPS62A02 , TPS62A02A , TPS62A06 , TPS62A06A , TPSM82810 , TPSM82813 , TPSM8287A06 , TPSM8287A10 , TPSM8287A12 , TPSM8287A15

 

  1.   Trademarks
  2. 1Introduction
  3. 2Loop Gain Measurement
  4. 3Output Impedance Measurement of TPS62816
  5. 4Bode Plot Reconstruction and Comparisons with Voltage Injection Method
  6. 5Conclusion
  7. 6References

5 Conclusion

As demonstrated in this application note, a loop gain reconstruction can be performed by measuring the output impedance of a DC-DC converter in different operating states. An output impedance measurement can give very useful insights regarding the DC-DC converter performances. In addition to bandwidth and phase margin evaluation of a power supply, an output impedance measurement can also help to evaluate the converter ability to recover from a certain load or to verify that a target output Impedance is met to achieve a strict load step requirement.