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

3.2.1 How to Save Bench Bode Plot to CSV File

Using AP Instruments’ Model 300 Frequency Response Analyzer, the bode plot is completed on TPS56C231EVM under conditions listed in Table 3-1. Inductor and output capacitors are same as Table 2-2.

Table 3-1 Bode Plot Test Conditions
Specification Test Conditions
Vin (V) 12
Vout (V) 1.2
Mode 800kHz Eco Mode
Iout (A) 6

Click the Run button in AP computer interface, then it shows the bode plot as Figure 3-2, where shows 114.68kHz crossover frequency and 43.573deg phase margin.

Figure 3-2 Bench Test Bode Plot of TPS56C231

Click Edit on the top menu and choose Copy Data, as shown in Figure 3-3 (a), then open the Excel spreadsheet to paste the data, the first column is Frequency (Hz), the second column is Mag [B/A] (dB), and the third column is Phase [B-A] (deg) as shown in Figure 3-3 (b) which is the raw data of bench test bode plot.

Figure 3-3 How to Save Bode Plot to CSV File