SIMPLIS Diode Options
The default test conditions for the Extract Diode Parameters dialog can be set from the menu
| Test Condition | Default Value | Units | Description |
| Forward current | 200m | A | The peak forward current used for curve fitting. The algorithm fits a straight line between 50% and 100% of this value. |
| Reverse voltage | 100 | V | The peak off-state voltage seen by this device. Used to extract capacitance for model level = 1 which includes parasitic capacitance. Breakdown is not modeled. |
| Model temperature | 50 | °C | Temperature used for all extraction simulations. |
| Model level | 0 | Model complexity. For information on choosing the model level, see SIMPLIS_Diode_Model_Levels. | |
| Number of Segments | 3 | Diodes may have two segments - representing On and Off Resistance or three segments with the third segment representing the transition between the On and Off states. | |
| Initial Condition | 0 Reversed Biased | Sets initial conducting segment. | |
| Limit maximum off resistance | Checked | none | Limits the off resistance for the diode. For some SPICE models, this will produce a SIMPLIS model which runs faster. |
| Maximum off resistance | 100Meg | W | The maximum off resistance of the diode. This value is used only if the "Limit maximum off resistance" checkbox is Checked. |
| Option | Default Value | Description |
| Debug | ||
| Output parameter ... | Unchecked | If checked, the debug statements
are automatically written to the deck file. The Command shell menu opens the .deck file for editing. An example set of debug statements can be found in the Deck-Level Debug section. |
Deck-Level Debug
If you check "Output parameter debug statements to the deck file," each Diode in the design has a debug report inserted in the .deck file when you run a simulation. This debug report displays the calculated values for each major parameter in a formatted table. You can edit the .deck file with the Command shell menu . A sample debug report is shown below:
***SIMPLIS DEBUG EXTRACTED DIODE START****************************************** *** *** *** Device with REF : D1 *** *** *** *** Extracted from SPICE model: D1n4148 *** *** *** ******************************************************************************** * * Model Extraction Parameters * * ID_PEAK : 200m * VD_PEAK : 63 * TEMP : 50 * LEVEL : 0 * LIMIT_MAX_ROFF : 1 * MAX_ROFF : 100Meg * * Conduction Parameters * * NUMSEG : 3 * R SEG#1 : 100Meg * R SEG#2 : 3.47253 * R SEG#3 : 1.36621 * * Conduction V-I Points * * VD0 : -63 * ID0 : -630n * VD1 : 696.738m * ID1 : 6.96738n * VD2 : 846.43m * ID2 : 43.1075m * VD3 : 1.06078 * ID3 : 200m * ******************************************************************************** *** *** *** Device with REF : D1 *** *** *** *** Extracted from SPICE model: D1n4148 *** *** *** ***SIMPLIS DEBUG EXTRACTED DIODE END********************************************