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 DVM Ramp Aux. Source

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

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