Programming instructions

SMPS Average Virtual
 National Instruments Corporation 12-25 Multisim Component Reference Guide
 To view or change a component’s model parameters:
1. Double-click on the placed component and select the Valu e tab.
2. Click Edit Model to display the Edit Model dialog box.
3. View or edit the model parameters as desired. For more information on the Edit Model
dialog box, refer to the Multisim User Guide, or the Multisim helpfile.
12.2.12FLYBACKVM
This is the averaged model (no switching component) of a basic flyback converter in a voltage
mode controlled configuration.
Parameter Description
FS Switching frequency
LS Secondary inductance
RS Equivalent series resistance of output
capacitor
MC Compensation ramp (in V/s)
RI Current sense resistor
VOUT Output voltage
VIN Input voltage
RL Load resistor
N Primary sensing versus secondary coil ratio
Pin Name Description
IN Input voltage
OUT Output voltage
GND Ground
DON Duty cycle setting
ComponentRef.book Page 25 Thursday, December 7, 2006 10:12 AM