SLUAAG8 October   2022 TPS56C231

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Time Domain Correlation
    1. 2.1 Load Transient Correlation Structure
    2. 2.2 Example Based on TPS56C231
      1. 2.2.1 How to Save Bench Scope Waveform to CSV File
      2. 2.2.2 How to Save Simplis Simulation to CSV File
      3. 2.2.3 How to Save Cadence Simulation Waveform to CSV File
      4. 2.2.4 Correlation Data
  5. 3Frequency Domain Correlation
    1. 3.1 Frequency Response Bode Plot Correlation Structure
    2. 3.2 Example Based on TPS56C231
      1. 3.2.1 How to Save Bench Bode Plot to CSV File
      2. 3.2.2 How to Save Simplis Bode Plot Simulation to CSV File
      3. 3.2.3 Correlation Data
  6. 4Summary
  7. 5References

3.2.3 Correlation Data

Both the CSV files, including bench bode plot test and Simplis simulation bode plot can be copied into one CSV file to do correlation. Figure 3-6 is the bode plot gain and phase margin correlation waveforms.

Figure 3-6 Correlation Gain of Bode Plot

As previously shown, the bode plot correlation of simplis simulation vs. bench test are not very good, the LC double-pole frequencies (peak point) are not well matched. This may be due to the L values in Table 2-2 are not actual values. Considering 15% inductance detaining (0.578uH), the Simplis bode plot is updated in Figure 3-7, which matches the bench result better.

Figure 3-7 Correlation Phase of Bode Plot