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About the loss items

The loss items that can be analyzed in the loss analysis of Scideam are the following four items.

  • Resistance loss
  • DC loss
  • Core loss
  • Switching loss

Note that switching loss is analyzed with the lite switch model in the lite loss analysis, and with the detail switch model in the detail loss analysis.

Resistance loss

This is the loss due to the resistance components in the circuit.

It can also be calculated for circuits that do not use detail analysis switch parts, such as existing circuits created in Scideam.

DC loss

This is the loss due to parasitic DC components other than the input in the circuit, such as the on voltage of switches and diodes.

It can also be calculated for circuits that do not use detail analysis switch parts, such as existing circuits created in Scideam.

Core loss

This is the iron loss of the core used in inductors and transformers.

Copper loss is analyzed as being included in the resistance loss, as the resistance component of the windings and so on.

About iron loss analysis

When you analyze including the iron loss of the core, you need to set the characteristic parameters of the core on the Inductor and Mutual Transformer in the circuit.

Because the characteristic parameters of the core are entered based on the loss data sheet provided by the core manufacturer, please prepare the data sheet.

For how to set the parameters, refer to the following.

Points to note about core loss

The calculation model of the core loss analysis currently used in Scideam has the following limitations.
Please keep them in mind when you check the analysis results.

  • DC superposition characteristics and saturation characteristics are not supported.
  • Copper loss is calculated as a normal resistance loss based on the winding resistance that is set.
  • Because core loss is calculated independently of the other circuit losses, the effect of core loss on the voltage and current of the circuit cannot be calculated.

Switching loss

This is the turn-on loss and turn-off loss of a semiconductor switch.

To analyze switching loss, you need to create the circuit using the switch parts for loss analysis.

For the switch parts for loss analysis, refer to the following pages.