Automation and modeling in design and management

Автоматизация и моделирование в проектировании и управлении

2658-3488 2658-6436

47509

10.30987/2658-6436-2021-3-4-68-76

Электротехнические комплексы и системы

Electrotechnical complexes and systems

Электротехнические комплексы и системы

DETERMINATION OF DYNAMIC RESPONSE COMPUTATION OF CONSTANT VOLTAGE PULSE CONVERTER MICROCHIPS

ОПРЕДЕЛЕНИЕ ЧАСТОТНЫХ ХАРАКТЕРИСТИК МИКРОСХЕМ ИМПУЛЬСНЫХ ПРЕОБРАЗОВАТЕЛЕЙ ПОСТОЯННОГО НАПРЯЖЕНИЯ

Зотин

Виталий Фёдорович

Zotin

Vitaliy Fedorovich

v.f.zotin@gmail.com

кандидат технических наук;

candidate of technical sciences;

Брянский государственный инженерно-технологический университет Bryansk State University of Engineering and Technology

30 12 2021

2021 68 76 03 12 2021

https://zh-szf.ru/en/nauka/article/47509/view

Рассматриваются способы определения частотных характеристик микросхем импульсных преобразователей постоянного напряжения для обеспечения требуемых динамических показателей. С помощью симулятора показаны особенности их применения для микросхем различных типов. Для ряда микросхем приведены результаты частотного анализа. Обоснована возможность технической реализации рассмотренных способов в виде контрольно-измерительного устройства.

Work objective is the determination of data on the frequency-domain behavior of components in the composition of the microcircuit and within the microcircuit as a whole, intended for using in DC voltage pulse converters. Research methods: simulation modeling. Research results and novelty: for microcircuits with an external frequency weighing network a frequency analysis scheme using an auxiliary operational amplifier and an active low-pass filter of the second order is proposed. Using a simulator in the LT-spice environment, the amplitude and phase frequency response data of the microchips of the step-down and step-up converters have been obtained. The possibility of technical implementation of the proposed scheme for experimental determination of frequency-domain behavior including final control of the parameters of the appropriate microchips has been noted. For microchips having built-in frequency weighing circuit, the possibility of determining frequency-domain characteristics during the formation of a test signal in an external control circuit has been confirmed. It is found that the use of this method for microchips with increased dynamic properties is problematic. Conclusion: the frequency analysis scheme using an auxiliary operational amplifier is suitable for both step-down and step-up DC/DC converters with an external frequency weighing network. This scheme can be recommended for experimental determination of frequency-domain behavior, including final control of the parameters of the appropriate microchips.

частотные характеристики запас устойчивости LT-spice регулятор контур управления

frequency-domain behavior (characteristics) gain margin LT-spice regulator control circuit

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