Diode - MapleSim Help
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Diode

Simple diode

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

Description

The Diode component uses the standard exponential diode law but includes a term to prevent numeric overflow for a strongly forward-biased diode. A constant parallel resistance is included.

An optional heat port provides a thermal connection for the heat generation, however, the model has no temperature dependency; use the HeatingDiode model for that.

If the exponent vVT reaches the limit maxexp, the diode characteristic is linearly continued to avoid overflow.

Equations

i=ip=in=vR+Ids{expvVT1vVTmaxexpexpM1+vVTmaxexp1otherwise

v=vpvn

LossPower=vi

Variables

Name

Units

Description

Modelica ID

v

V

Voltage drop between the two pins

v

vx

V

Voltage at pin x, xn,p

x.v

i

A

Current flowing from pin p to pin n

i

ix

A

Current into pin x, xn,p

x.i

LossPower

W

Loss power leaving component via HeatPort

LossPower

TheatPort

K

Temperature of HeatPort

T_heatPort

Connections

Name

Description

Modelica ID

p

Positive pin

p

n

Negative pin

n

Heat Port

Conditional heat port

heatPort

Parameters

Name

Default

Units

Description

Modelica ID

Ids

1·10−6

A

Saturation current

Ids

VT

0.04

V

Voltage equivalent of temperature

Vt

maxexp

15

 

Max. exponent for linear continuation

Maxexp

R

1·108

Ω

Parallel resistance

R

Use Heat Port

false

 

True (checked) means heat port is enabled

useHeatPort

T

293.15

K

Fixed device temperature if Use Heat Port is false

T

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Diodes

Electrical Library

Semiconductors