Other Parts Discussed in Thread: SFRA
Dear team，
The customer used BOOSTXL-BUCKCONV with LAUNCHXL-F28379D.
The simulator SFRA and the frequency response analyzer (FRA) were used to measure the substrate gain and phase.
The measurement waveform of SFRA is similar to the measurement waveform of FRA, but the starting point of the phase waveform of SFRA is negative, and the starting point of the phase waveform of FRA becomes positive.
In the past, the average starting point of the phase difference curve measured by FRA was positive. Is it normal that the starting point of the current SFRA phase difference waveform is negative? What is the difference?
Problem 2: Regarding the reading of measured values
According to the curve obtained by SFRA simulation, the gain is negative and the phase is negative.
But when the results show positive values, how to read the value of the curve is more reasonable?
