Pulse Load - Repeating Pure Current Pulse
The Pulse Load - Repeating Pure Current Pulse subcircuit models a repeating pulsed current load. This load is not used in any test objectives, but you can set a load to use this subcircuit with a Pul() call in the Load column of your testplan.
Other similar pulsed current loads include:
- 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 with the starting current modeled without a resistor
In this topic:
| Model Name | Pulse Load - Single Current Pulse | ||||
| Simulator |
|
This device is compatible with both the SIMetrix and SIMPLIS simulators. | |||
| Parts Selector Menu Location |
|
||||
| Symbol Library | None - the symbol is automatically generated when placed or edited. | ||||
| Model File | SIMPLIS_DVM_ADVANCED.lb | ||||
| Subcircuit Name |
|
||||
| Symbols |
|
||||
| Schematic - 2 Terminal |
|
||||
| Schematic - 3 Terminal |
|
||||
| Schematic - 4 Terminal |
|
||||
Pulse Load - Repeating Pure Current Pulse Parameters
The following table explains parameters used in the Repeating Pure Current Pulse Load.
| Parameter Name | Default | Data Type | Range | Units | Parameter Description |
| FALL_TIME | 50u | Real | min: 0 | The fall time of the load current pulse | |
| FINAL_CURRENT | 750m | Real | A | The pulse or final current for the load pulse. This can be a numeric value or a symbolic value, such as a percentage of full load | |
| FREQUENCY | 10k | Real | min: > 0 | Hz | The frequency of the load pulse |
| IDLE_IN_POP | 0 | Real | 0 or 1 | If set to 0, the load current during the POP analysis is set to the START_CURRENT; otherwise the load will be active during the POP analysis. | |
| LOAD_NAME | LOAD | String | n/a | n/a | Name of the DVM load. This name cannot contain spaces. |
| OFF_UNTIL_DELAY | 0 | Real | 0 or 1 | If set to 1, the load current will be the START_CURRENT until the time specified by TIME_DELAY. If set to 0, the value of TIME_DELAY is interpreted as a phase delay. | |
| PHASE_ANGLE | 90 | Real | ° | The phase angle of the current pulse, used only if the USE_PHASE parameter is 1. | |
| PULSE_WIDTH | 200u | Real | min: 0 | s | The pulse width of the load, excluding the rise and fall times |
| RISE_TIME | 100u | Real | min: 0 | s | The rise time of the load current pulse |
| START_CURRENT | 0 | Real | A | The lower or starting current for the load current pulse. This can be a numeric value or a symbolic value, such as a percentage of full load. | |
| TIME_DELAY | 10u | Real | min: 0 | s | The delay before the load current pulse starts. The load behavior before the TIME_DELAY is determined by the OFF_UNTIL_DELAY parameter. |
| USE_PHASE | 0 | Real | 0 or 1 | If set to 1, the load is configured to use the phase angle supplied by the PHASE_ANGLE parameter. |
Testplan Entry for the Repeating Pure Current Pulse Load
To set any managed DVM load to a Repeating Pure Current Pulse Load subcircuit, place a Pul() testplan entry in the Load column.
The Pul() testplan entry has the following syntax with the arguments taken from the list of Pulse Load - Repeating Pure Current Pulse Parameters above.
Pul(REF, START_CURRENT, FINAL_CURRENT, FREQUENCY, RISE_TIME, FALL_TIME, PULSE_WIDTH) Pul(REF, START_CURRENT, FINAL_CURRENT, FREQUENCY, RISE_TIME, FALL_TIME, PULSE_WIDTH, OPTIONAL_PARAMETER_STRING)
| Argument | Range | Description |
| REF | n/a | The actual reference designator of the DVM load or the more generic syntax of OUTPUT:n where n is an integer indicating a position in the list of DVM loads. |
| START_CURRENT | n/a | The lower or starting current for the load current pulse |
| FINAL_CURRENT | n/a | The pulse or final current for the load pulse |
| FREQUENCY | min: > 0 | The frequency of the load pulse |
| RISE_TIME | min: 0 | The rise time of the load current pulse |
| FALL_TIME | min: 0 | The fall time of the load current pulse |
| PULSE_WIDTH | min: 0 | The pulse width of the load, excluding the rise and fall times |
| OPTIONAL_PARAMETER_STRING | n/a | Parameter string with any of the other parameters from the parameter table above* |
* If multiple parameters are specified, join the parameter key-value pairs with a space, as shown in the examples below. The order of the parameter names does not matter.
Examples
The following examples set the first DVM managed load to a Repeating Pulse Load with a starting current of 0A and a final current of 5A. The timing parameters and the optional parameter strings are different for each example.
Zero Time Delay Example
Since the TIME_DELAY parameter is set to zero, the pulse begins with a START_CURRENT value of 0 at t=0.
| *?@ Load |
|---|
| Pul(OUTPUT:1, 0, 5, 10k, 6u, 10u, 22u, TIME_DELAY=0) |
The results of this testplan entry are shown below:
Time Delay Example
In this example, the TIME_DELAY parameter is set to 75us. Since the OFF_UNTIL_DELAY parameter is not specified, the TIME_DELAY is interpreted as a phase delay.
| *?@ Load |
|---|
| Pul(OUTPUT:1, 0, 5, 10k, 6u, 10u, 22u, TIME_DELAY=75u) |
The results of this testplan entry are shown below:
Time Delay Example With OFF_UNTIL_DELAY=1
In this example, the TIME_DELAY parameter is set to 75us, and the OFF_UNTIL_DELAY is set to 1; therefore, for simulation times less than the TIME_DELAY parameter,the load current is 0A, which is the value of the START_CURRENT argument.
| *?@ Load |
|---|
| Pul(OUTPUT:1, 0, 5, 10k, 6u, 10u, 22u, TIME_DELAY=75u OFF_UNTIL_DELAY=1) |
The results of this testplan entry are shown below:
