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Ansoft Designer / Ansys Designer 在线帮助文档:


Nexxim Simulator >
Nexxim Component Models >
FETs (JFETs and MESFETs) >
   Parker-Skellern PSFET Model (Level 18)       

Parker-Skellern PSFET Model (Level 18)

The .MODEL statement for the Level 18 Parker-Skellern PSFET Transistor model specifies values for one or more model parameters.

.MODEL modelname NJF LEVEL=18 [modelparameter=]val] ...

or

.MODEL modelname PJF LEVEL=18 [modelparameter=]val] ...

LEVEL=18 specifies the Parker-Skellern PSFET model.

 


Level 18 PSFET Basic Model Parameters

Model Parameter

Description

Unit

Default

LEVEL

18 is required to select the Parker-Skellern PSFET model

None

1 (default if LEVEL parameter is omitted)

ACGAM

Capacitance modulation parameter

None

0.0

BETA

Linear region transconductance scale factor

None

1e-4

CGD

Zero-bias gate-drain capacitance

Farad

0.0

CGS

Zero-bias gate-source capacitance

Farad

0.0

DELTA

Thermal reduction coefficient

1/Watt

0.0

FC

Forward-bias capacitance parameter

None

0.5

HFETA

High-frequency Vgs feedback parameter

None

0.0

HFE1

HFETA modulation by Vgd

1/Volt

0.0

HFE2

HFETA modulation by Vgs

1/Volt

0.0

HFGAM

High-frequency Vgd feedback parameter

None

0.0

HFG1

HFGAM modulation by Vsg

1/Volt

0.0

HFG2

HFGAM modulation by Vdg

1/Volt

0.0

IBD

Gate-junction breakdown current

Ampere

0.0

IS

Gate-junction saturation current

Ampere

1.0e-14

LFGAM

Low-frequency Vgd feedback parameter

None

0.0

LFG1

LFGAM modulation by Vsg

1/Volt

0.0

LFG2

LFGAM modulation by Vdg

1/Volt

0.0

MVST

Subthreshold modulation

1/Volt

0.0

N

Gate-junction ideality factor

None

1.0

P

Linear region power law exponent

None

2.0

Q

Saturated region power law exponent

None

2.0

RS

Source ohmic resistance

Ohm

0.0

RD

Drain ohmic resistance

Ohm

0.0

TAUD

Relaxation time for thermal reduction

Second

0.0

TAUG

Relaxation time for gamma feedback

Second

0.0

VBD

Gate-junction breakdown potential

Volt

1.0

VBI

Gate-junction potential

Volt

1.0

VST

Subthreshold potential

Volt

0.0

VTO

Subthreshold voltage

Volt

-2.0

XC

Capacitance pinchoff reduction factor

None

0.0

XI

Saturation-knee potential factor

None

1000.0

Z

Knee transition parameter

None

0.5

RG

Gate ohmic resistance

Ohm

0.0

LG

Gate inductance

Henry

0.0

LS

Source inductance

Henry

0.0

LD

Drain inductance

Henry

0.0

CDSS

Fixed drain-source capacitance

Farad

0.0

AFAC

Gate width scale factor

None

1.0

NFING

Number of gate fingers scale factor

None

1.0

TNOM

Nominal temperature

°K

300

TEMP

Temperature

°K

300


 

PSFET Model Netlist Example

.MODEL psfet18 NJF LEVEL=18

+

+

+

+

 




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