LTspice to show results

[David Harmon]

In the LTspice component attribute editing dialog box there is a section
at the bottom saying:
Simulation Results
Peak Current [ ]
RMS Current [ ]
Power Dissipation [ ]

However, I never see any results there. The picture in the help file
shows results there. How do I get the results to show?

 

[Mike Engelhardt]

David,

In the LTspice component attribute editing dialog box
there is a section at the bottom saying:
Simulation Results
Peak Current [ ]
RMS Current [ ]
Power Dissipation [ ]

However, I never see any results there. The picture in
the help file shows results there. How do I get the
results to show?

These statics are only accumulated during steady-state
detection, i.e., when the keyword "steady" is on the
..tran command. It's not something of general use, since
the steady-state detection is written the the SMPS products.
Typically the models detect that the error amp output
current has gone to zero but not due to being at the
rail of compliance. Since there's ripple on this current,
the model integrates it over a clock cycle. Anyway,
it doesn't work for general SPICE simulations.

My advice is to ignore those fields and compute peak,
average, and RMS currents/voltages, etc, from the
waveforms.

--Mike