WEBENCH® Tools/TPS54160: Loop response chart for different operating points

Vignesh,

The chart is created based on the design parameters input when the design was created. The loop response is only shown for initial design.

However, you can get the Cross Freq, Gain Marg, and Phase Marg values from the OpVal table at the different operating conditions.

Please note that you cannot change the operating values outside the original constraints that were used to create the design (Less than Vinmin, More than VinMax, or More than Iout).

Vignesh,

I don't have a good way to do that other than to create multiple designs and export them individually for each current/voltage paring you want to investigate. The biggest issue here is that WEBENCH® would produce an optimized design for each operating condition and you would have to update the components back to the original design components you were using to do a true comparison.

The simulation of the Bode Plot can also be exported, but you can only change the load, not the input voltage in the simulation window, so you would need an individual design for each input voltage desired. Each voltage design would have to be updated as above since WEBENCH® would create a new design at each voltage value.

Or you could only use the crossover frequency and the phase margin (1 point) for each design using the OpVal table...

Finally, you could also use the average model in PSpice to perform the simulations. This device has the PSpice average model in the product folder.