Development and verification of behavioral models of line-ar voltage regulators with duty cycle short circuit and over-load protection
DOI: 10.21293/1818-0442-2023-26-2-103-108
Abstract: The object of development are behavioral models of a linear negative voltage regulator in two modifications. Linear voltage regulators manufactured by KREMNIY EL GROUP JSC were chosen as prototypes for the models. IC 5348EM035 with a fixed output negative voltage value of 5 V, IC 5348EP035 with an adjustable output negative voltage value of 1.25V to 14.5V and their functional analogue IC UCC284DP manufactured by Texas Instruments were used. These are low voltage drop with duty cycle short circuit and overload protection regulators. Be-havioral models are implemented in SPICE language through converting netlists of prototype equivalent circuits. Equivalent circuits on the regulators IC functional circuits were made, tak-ing into account a typical switching circuit. Equivalent circuits of regulators are implemented on the standard mathematical blocks, limiters, dependent sources, controlled switches and passive elements. Parameter limits are written inside controlled sources by mathematical relations. When verifying behavioral models, it was established that the results of modeling the regu-lators operation correspond to the data in the technical descrip-tions of manufacturers. The verification was carried in typical switching circuits with given input electrical parameters. In present study the results of modeling the main characteristics of microcircuits are described: input and output voltages, voltage drop across the regulator and timing diagrams of the main modes of operation of the IC, including the mode of duty cycle short circuit and overload protection regulators. The developed and verified behavioral models of linear voltage regulators 5348EM035 and 5348EP035 and their functional analogue UCC284DP will be useful in the engineering, design and study of the characteristics of power supply devices for electronic and industrial equipment. These SPICE models are applicable in modern specialized CAD systems for circuit design and simula-tion.
Keywords: linear voltage regulator, integrated circuit, behavioral model, OrCAD, SPICE, modeling
For citation:
Malahanov A. A., Malahanova A. G., Vasilieva Yu. O. Development and verification of behavioral models of line-ar voltage regulators with duty cycle short circuit and over-load protection. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2023, vol. 26, no. 2, pp. 103–108. DOI: 10.21293/1818-0442-2023-26-2-103-108
Authors and copyright holders:
- Malahanov A. A. , Bryansk State Technical University (Bryansk, Russia),
- Malahanova A. G. , Bryansk State Technical University (Bryansk, Russia)
- Vasilieva Yu. O. , Bryansk State Technical University (Bryansk, Russia),
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