Simulation
Types of SPICE Model
2019.04.25
Points of this article
・There are two types of SPICE models: “device models” and “subcircuit models”.
・Basically, ”device models” are models for discrete devices like transistors or diodes or like.
・”Subcircuit models” are basically a combination of “device models”.
There are different kinds of models that are used in SPICE simulations. We have already explained a number of these, using the term “device models”; here we explain the types of SPICE model.
Types of SPICE Model
There are two types of SPICE model: “device models” and “subcircuit models”.
Device models essentially are models of elements such as diodes and MOSFETs. Subcircuit models are in essence combinations of device models, and can be thought of simply as circuit state models. In addition, there are also special models used to perform thermal calculations for circuits.
About SPICE Device Models
In device models, the electrical characteristics of the model, whether for a transistor, a diode, or another device, are determined by certain equations. The model indicates the coefficients (parameters) used in the equations.
About SPICE Subcircuit Models
Device models, power supplies, equations, and so on are combined to configure a model as a circuit. The model includes circuit connection information, device models, and the like.
Below are details of the “circuit connections within model” part of the above figure. An instance name is followed by connection pins and a model name.
In the next article, we explain some models in somewhat greater detail.
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Downloadable materials, including lecture materials from ROHM-sponsored seminars and a selection guide for DC-DC converters, are now available.
List of articles related to the「Types of SPICE Model」
- Foundations of Electronic Circuit Simulation Introduction
- About SPICE
- SPICE Simulators and SPICE Models
- Types of SPICE simulation: DC Analysis, AC Analysis, Transient Analysis
- Types of SPICE simulation: Monte Carlo
- Convergence Properties and Stability of SPICE Simulations
- SPICE Device Models: Diode Example–Part 1
- SPICE Device Models: Diode Example–Part 2
- SPICE Subcircuit Models: MOSFET Example―Part 1
- SPICE Subcircuit Models: MOSFET Example―Part 2
- About Thermal Models
- About Thermal Dynamic Model
- SPICE Subcircuit Models: Models Using Mathematical Expressions
- Summary
Download Technical Documents
Downloadable materials, including lecture materials from ROHM-sponsored seminars and a selection guide for DC-DC converters, are now available.
Simulation
- Optimization of Inverter Circuits -Introduction-
-
Foundations of Electronic Circuit Simulation Introduction
- About SPICE
- SPICE Simulators and SPICE Models
- Types of SPICE simulation: DC Analysis, AC Analysis, Transient Analysis
- Types of SPICE simulation: Monte Carlo
- Convergence Properties and Stability of SPICE Simulations
- Types of SPICE Model
- SPICE Device Models: Diode Example–Part 1
- SPICE Device Models: Diode Example–Part 2
- SPICE Subcircuit Models: MOSFET Example―Part 1
- SPICE Subcircuit Models: MOSFET Example―Part 2
- About Thermal Models
- About Thermal Dynamic Model
- SPICE Subcircuit Models: Models Using Mathematical Expressions
- Summary
-
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