Hello, I have a circuit with 40+ components and multiple voltage sources. How can I calculate the total power dissipation in Ltspice? I know how to find the dissipation for individual components but is there a way to calculate it at once for the whole CMOS circuit like in pspice. Also, is there a way to get it in text instead of the waveform?
Thank you, fixed the M5_gate. I'm confused about how to find the output power.
The input power components would be 2 sine sources as well as pulse input. But what about the output?
You should mention that the option "Stop simulating if steady state is detected" depends on a special function, which is built into most LT SMPS controller models. As stated in the online help under Circuit Efficiency Calculation
The program will detect the steady state by checking the internal state of the switcher macromodel. It doesn't work when a switching regulator part is not part of the circuit because the steady state detection is implemented in the model -- usually by looking for the the current flowing out of the error amplifier to drop to zero as integrated over a switching cycle.
You should mention that the option "Stop simulating if steady state is detected" depends on a special function, which is built into most LT SMPS controller models. As stated in the online help under Circuit Efficiency Calculation
You can also implement steady state detection by using the EAclk parameter of the OTA special function.
Yes, the circuit is too simple and don't have define state.
Other way is use semi-hand.
Use .meas macro. Define all net/trace name and place formula in Spice directive.
The result will appear in Log file (Ctrl + L).
It is trouble for many component.