Is there some method for measuring the phase margin and the gain margin that does not require use of an FRA?|FAQ|ROHM Semiconductor

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Is there some method for measuring the phase margin and the gain margin that does not require use of an FRA?
- Trends can be predicted to some degree from calculations and simulations, but in the end it is necessary to use an FRA with actual equipment for confirmation. As one means of confirming stability of operation without using an FRA, transient response characteristics can be evaluated, and a rough judgment can be made from signs of oscillation in the output voltage and from the state of ringing.