Semiconductors

Discrete semiconductor devices, such as diodes and transistors

Simscape Blocks

Current Limiter	Behavioral model of current limiter
Diode	Piecewise or exponential diode
Gate Driver	Behavioral model of gate driver integrated circuit
GTO	Gate Turn-Off Thyristor
Half-Bridge Driver	Behavioral model of half-bridge driver integrated circuit
Ideal Semiconductor Switch	Ideal Semiconductor Switch
IGBT (Ideal, Switching)	Ideal insulated-gate bipolar transistor for switching applications
MOSFET (Ideal, Switching)	Ideal N-channel MOSFET for switching applications
N-Channel IGBT	N-Channel insulated gate bipolar transistor
N-Channel JFET	N-Channel junction field-effect transistor
N-Channel LDMOS FET	N-Channel laterally diffused metal oxide semiconductor or vertically diffused metal oxide semiconductor transistors suitable for high voltage
N-Channel MOSFET	N-Channel metal oxide semiconductor field effect transistor using either Shichman-Hodges equation or surface-potential-based model
NPN Bipolar Transistor	NPN bipolar transistor using enhanced Ebers-Moll equations
Optocoupler	Behavioral model of optocoupler as LED, current sensor, and controlled current source
P-Channel JFET	P-Channel junction field-effect transistor
P-Channel LDMOS FET	P-Channel laterally diffused metal oxide semiconductor or vertically diffused metal oxide semiconductor transistors suitable for high voltage
P-Channel MOSFET	P-Channel metal oxide semiconductor field-effect transistor using either Shichman-Hodges equation or surface-potential-based model
PNP Bipolar Transistor	PNP bipolar transistor using enhanced Ebers-Moll equations
SPICE-Imported MOSFET	Predefined MOSFET parameterized by external SPICE subcircuit
Thyristor	Thyristor using NPN and PNP transistors
Thyristor (Piecewise Linear)	Thyristor

Functions

`ee_getEfficiency`	Calculate efficiency as function of dissipated power losses
`ee_getPowerLossSummary`	Calculate dissipated power losses
`ee_getPowerLossTimeSeries`	Calculate dissipated power losses and return time series data

Topics

Parameterizing Blocks from Datasheets

Overview of techniques used to specify block parameters to match the data from manufacturer datasheets.

Parameterize a Piecewise Linear Diode Model from a Datasheet

Specify block parameters for a Piecewise Linear Diode to match the data from manufacturer datasheets.

Parameterize an Exponential Diode from a Datasheet

Specify block parameters for an Exponential Diode to match the data from manufacturer datasheets.

Parameterize an Exponential Diode from SPICE Netlist

Specify block parameters for an Exponential Diode to match the SPICE netlist data.

Simulating Thermal Effects in Semiconductors

Simulate generated heat and device temperature by using the thermal ports.

Plot Basic Characteristics for Semiconductor Blocks

Plot I-V curve for semiconductor device model, based on block parameter values.

MOSFET Characteristics Viewer

Verify MOSFET model behavior based on specified parameter values.

Featured Examples

Switching Audio Power Amplifier

A switching audio power amplifier circuit. Switching audio power amplifiers are more efficient than conventional power amplifiers as switching devices are operating only in the fully-on and fully-off states. This audio power amplifier uses a 1MHz switching frequency and has a PI feedback controller to ensure that output voltage tracks the 2kHz and 2.5kHz sine wave inputs. The power spectrum is plotted in the Spectrum Analyzer, and can be used to inform selection of controller and filter parameters.

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Solar Power Inverter

Determine the efficiency of a single-stage solar inverter. The model simulates one complete AC cycle for a specified level of solar irradiance and corresponding optimal DC voltage and AC RMS current. Using the example model ee_solar_characteristics, the optimal values have been determined as 342V DC and 20.05A AC for an irradiance of 1000W/m^2 and panel temperature of 20 degrees Celsius. Inverter efficiency is determined in two independent ways. The first compares the ratio of AC power out to DC power in over one AC cycle. The second calculates losses by component by making use of Simscape™ logging. The small difference in calculated efficiency value is due to differences between trapezoidal integration used by the script and the greater accuracy achieved by the Simulink® variable-step solver.

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