Zener Diode - MapleSim Help

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Zener Diode

Zener diode with 3 working areas

Modelica Standard Library

	Description
	The Zener Diode (or ZDiode) component consists of a diode model in parallel with a resistor.

	Equations
	$i = i_{p} = - i_{n} = \frac{v}{R} + {\begin{array}{c} I_{ds} (\exp (M) (1 + \frac{v}{V_{T}} - M) - 1) & \frac{v}{V_{T}} > M \\ - I_{ds} - I_{bv} (\exp (M) (1 - \frac{v + B_{v}}{N_{bv} V_{T}}) - M) & v + B_{v} < - M N_{bv} V_{T} \\ I_{ds} (\exp (\frac{v}{V_{T}}) - 1) - I_{bv} \exp (- \frac{v + B_{v}}{N_{bv} V_{T}}) & otherwise \end{array}$ $M = Maxexp$ $v = v_{p} - v_{n}$ $LossPower = v i$

Variables

Name	Units	Description	Modelica ID
$v$	$V$	Voltage drop between the two pins	v
$v_{x}$	$V$	Voltage at pin $x$ , $x \in \{n, p\}$	x.v
$i$	$A$	Current flowing from pin p to pin n	i
$i_{x}$	$A$	Current into pin $x$ , $x \in \{n, p\}$	x.i
$LossPower$	$W$	Loss power leaving component via HeatPort	LossPower
$T_{heatPort}$	$K$	Temperature of HeatPort	T_heatPort
$maxexp$			maxexp

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
$I_{ds}$	$1 \cdot 10^{−6}$	$A$	Saturation current	Ids
$V_{T}$	$0.04$	$V$	Voltage equivalent of temperature $\frac{k T}{q}$	Vt
$Maxexp$	$30$		Max. exponent for linear continuation	Maxexp
$R$	$1 \cdot 10^{8}$	$Ω$	Parallel ohmic resistance	R
$B_{v}$	$5.1$	$V$	Breakthrough voltage = Zener- or Z-voltage	Bv
$I_{bv}$	$0.7$	$A$	Breakthrough knee current	Ibv
$N_{bv}$	$0.74$		Breakthrough emission coefficient	Nbv
Use Heat Port	$false$		True (checked) means enable heat port	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

Electrical Library

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