Short Circuit Load
The Short Circuit Load subcircuit models the application of a short circuit at a user-defined time point. Using the recover argument, you can remove the short circuit and test the recovery of the circuit. This load is used in the built-in testplans for the ShortCkt() Test Objective.
Other similar loads include:
- Ramp Load - a ramped load where the starting current is modeled with a resistor and the ramp current is modeled with a PWL current source
- Ramp Pure Load - a ramped load where both the starting current and the ramp current are modeled with a current source
- Pulse Load - Single Current Pulse - a single current pulse load with the starting current modeled with a resistor
- Pulse Load - Single Pure Current Pulse - a single current pulse load without any resistive component
In this topic:
| Model Name | Short Circuit Load | ||||
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This device is compatible with both the SIMetrix and SIMPLIS simulators. | |||
| Parts Selector Menu Location |
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| Symbol Library | None - the symbol is automatically generated when placed or edited. | ||||
| Model File | SIMPLIS_DVM_ADVANCED.lb | ||||
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| Schematic - 2 Terminal |
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| Schematic - 3 Terminal |
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| Schematic - 4 Terminal |
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Parameters
The following table explains the parameters used in the short circuit load subcircuit..
| Parameter Name | Default | Data Type | Range | Units | Parameter Description |
| LOAD_NAME | LOAD | String | n/a | n/a | Name of the DVM load. This name cannot contain spaces. |
| LOAD_RESISTANCE | 2.00667 | Real | min: 0 | Ω | The resistance value which models the starting current of the load. |
| PULSE_WIDTH | 200u | Real | min: 0 | s | The pulse width of the short circuit in seconds. |
| SHORTCKT_LOAD_RESISTANCE | 10m | Real | min: >0 | Ω | The resistance of the short circuit condition. |
| TIME_DELAY | 10u | Real | min: 0 | s | The time delay before the short circuit initiates. |
Timing
During a ShortCkt() test, DVM sets the output under test to use the short circuit load subcircuit. Then DVM automatically sets the TIME_DELAY and PULSE_WIDTH parameters for the Ramp Load. You can change the timing with the Ramp() function call by providing the timing parameters as an optional parameter string. The optional parameter string is the third or fourth argument to the ShortCkt() load function call.