A PSpice Switch Model For High-Power Application

PSpice introduces innovations transforming civic life and business sectors, yet a simulation software switch must first be designed and tested to enable solutions for high-intensity circuits.

A PSpice simulation software switch can be designed and tested in two instances so that a voltage/current-controlled switch is compatible with PSpice’s analogue behaviour modelling. This is necessary before implementing solutions in high-load circuits.

Simulation method

There are different Spice/PSpice methods to obtain equivalent circuits for different bias dependent circuits. A circuit method which is implemented by PSpice software is used to obtain the two electronic switches for the network (Figs: 1 and 2).

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Table I describes (Figs: 1 and 2) the Spice/PSpice procedure to obtain two types of switch equivalents at DC using the value option of PSpice analogue behavioural model option of PSpice. The switching (on/off) action for two switches is obtained by

1. G1a which has a value of DC current as {-v(3)*0.01*v(2)/100} where v(3) is the voltage at node (3) described by voltage pulse at node (3) with V1 as the source. V(2) is voltage at node (2).
2. Ea which has a voltage value of [V(6)*0.01*i(E50)*50] where V(6) is the voltage at node (6)described by I06 current pulse and I(E50) is the current through dependent voltage source Ea.

The remaining high-power resistive circuit is represented by resistor networks.

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Table I: A method to obtain DC equivalent power switches

Table II: A second example with power switch

Various possible applications in power electronics could be solved and analysed using dependent and controlled voltage/current sources to describe switches (in the design described( Tables I and II) .

The evolution of simulation tools such as Spice/PSpice led to the transformation of public life and industries by providing various opportunities for the innovation of high-power radio frequency (RF), microwave and millimetre-wave components that could be simulated before application. The design idea is useful to obtain solutions to high-power electronic circuits with switches.

References

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By: K. Bharath Kumar, Researcher

The author obtained a B. Tech degree in E and CE with highest honours from JNT University, Anantapur, India, in 1981 and an M. Tech degree from Indian Institute of Technology, Kharagpur, India in the field of Microwave and Optical Communication in the year 1983. Later, hejoined Indian Telephone Industries, Bangalore, India and worked in the area of Fiber optics. In 1990, I obtained an M.S. degree in electrical engineering from the Illinois Institute of Technology, Chicago, USA and joined Oki Electric, Japan, as a researcher in the semiconductor laboratory. He has over thirty-four publications in the area of simulation and modelling of electronic circuits in various national and international journals. Now he is retired from Oki electric, Japan.