DVM - Design Verification Module

Ramp Auxiliary Source

The ramp auxiliary source is used whenever you need a ramp or step voltage source. The source includes probes for both the source voltage and current.

Model Name	Ramp Auxiliary Source
Simulator		This device is compatible with both the SIMetrix and SIMPLIS simulators.
Parts Selector Menu Location	DVM ▶ Source ▶ DVM Aux. Source
Symbol Library	None - the symbol is automatically generated when placed or edited.
Model File	SIMPLIS_DVM_ADVANCED.lb
Subcircuit Name	SIMPLIS_DVM_ADVANCED_SOURCE_AUX_RAMP
Schematic

Ramp Auxiliary Source Parameters

The following table explains the relevant parameters.

Parameter Name	Default	Data Type	Range	Units	Parameter Description
FINAL_VOLTAGE	12	Real	min: 0	V	The final voltage for the source
RISE_TIME	100u	Real	min: 0	s	The ramp rise time in seconds
SOURCE_NAME	SRC	String	n/a	n/a	Name of the DVM source. This name cannot contain spaces.
SOURCE_RESISTANCE	0.4	Real	min:0	Ω	Sets the source resistance of the source
START_VOLTAGE	5	Real	min: 0	V	The starting voltage for the source
TIME_DELAY	10u	Real	min: 0	s	The time delay before the ramp initiates

Testplan Entry for the Ramp Auxiliary Source

To set any DVM AUX source to a Ramp Source subcircuit, place a Ramp() testplan entry in the Source column.

The Ramp() testplan entry has the following syntax with the arguments explained in the table below.

Ramp(REF, START_VOLTAGE, FINAL_VOLTAGE)
Ramp(REF, START_VOLTAGE, FINAL_VOLTAGE, OPTIONAL_PARAMETER_STRING)

Argument	Range	Description
REF	n/a	The actual reference designator of the DVM AUX source.
START_VOLTAGE	min: 0	The starting voltage for the source.
FINAL_VOLTAGE	min: 0	The final voltage for the source.
OPTIONAL_PARAMETER_STRING	n/a	Parameter string with timing parameters TIME_DELAY and/or RISE_TIME*

* If both parameters are specified, join the two parameter key-value pairs with a space, as shown in the example below. The order of the parameter names does not matter.

Example

The following example sets the Aux source with reference designator V5 to a Ramp Source, with a starting voltage of 1V and a final voltage of 5V. The optional parameter string in this example sets the time delay to 25us and the rise time to 100us.

Note: In this examples, the Source column is the first column in the testplan and, therefore, begins with the special three character sequence: *?@.

*?@ Source
Ramp(V5, 1, 5, TIME_DELAY=25u RISE_TIME=100u)

The results of this testplan entry are shown below:

Annotation	Parameter Value
X0	TIME_DELAY
X1	TIME_DELAY + RISE_TIME
Y0	START_VOLTAGE
Y1	FINAL_VOLTAGE