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Análisis de las limitaciones del concepto MOSFET de superunión (CoolMOS™) - Parte I: Teoría

Zbigniew Lisik¹, Jacek Podgórski¹

¹Department of Semiconductor and Optoelectronic Devices, Lodz University of Technology, Aleje Politechniki 8, 93-590 Lodz, Poland.

Materials (Basel, Switzerland)

|December 11, 2025

Resumen

Este estudio revela limitaciones en el concepto del dispositivo de potencia CoolMOS™, mostrando que el efecto de superunión no es inherente y requiere umbrales de campo eléctrico específicos. Estos hallazgos abordan expectativas insatisfechas para el alivio de alto voltaje en dispositivos de potencia unipolares.

Área de la Ciencia:

Física de Semiconductores
Electrónica de Potencia

Sus antecedentes:

Se teorizó que CoolMOS™ superaría las limitaciones de alto voltaje en dispositivos de potencia unipolares.
Las expectativas de rendimiento de CoolMOS™ no se han cumplido plenamente en la práctica.

Objetivo del estudio:

Identificar y analizar las limitaciones del concepto CoolMOS™.
Investigar las restricciones teóricas y físicas de la tecnología de superunión en transistores de potencia.

Principales métodos:

Análisis teórico de los principios de superunión de alto voltaje.
Investigaciones numéricas de estructuras CoolMOS™ basadas en tecnología VDMOS.

Principales resultados:

El efecto de superunión no es una característica inherente de la unión p-n en forma de serpentina en CoolMOS™.
La activación del Modo SuperUnión (SJM) depende de alcanzar un campo eléctrico umbral (Eth).
Se identificaron limitaciones físicas y tecnológicas de CoolMOS™ a través de simulaciones numéricas.

Conclusiones:

El potencial teórico de CoolMOS™ para el alivio de alto voltaje está limitado por condiciones operativas específicas.
Se necesita más investigación para abordar las limitaciones identificadas y mejorar el rendimiento del dispositivo.

Palabras clave:

Dispositivos MOS optimización del rendimiento del dispositivo MOSFET de potencia electrónica de potencia dispositivos semiconductores de potencia superunión

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