Diode
Simple diode
Description
Equations
Variables
Connections
Parameters
Modelica Standard Library
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.
i=ip=−in=vR+Ids⁢{exp⁡vVT−1vVT≤maxexpexp⁡M⁢1+vVT−maxexp−1otherwise
v=vp−vn
LossPower=v⁢i
Name
Units
Modelica ID
v
V
Voltage drop between the two pins
vx
Voltage at pin x, x∈n,p
x.v
i
A
Current flowing from pin p to pin n
ix
Current into pin x, x∈n,p
x.i
LossPower
W
Loss power leaving component via HeatPort
TheatPort
K
Temperature of HeatPort
T_heatPort
p
Positive pin
n
Negative pin
Heat Port
Conditional heat port
heatPort
Default
Ids
1·10−6
Saturation current
VT
0.04
Voltage equivalent of temperature
Vt
maxexp
15
Max. exponent for linear continuation
Maxexp
R
1·108
Ω
Parallel resistance
Use Heat Port
false
True (checked) means heat port is enabled
useHeatPort
T
293.15
Fixed device temperature if Use Heat Port is false
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
Download Help Document