Los puentes H son circuitos fundamentales en el control de cargas de potencia, tales como motores y solenoides, ampliamente empleados en robótica, automatización y diversas otras aplicaciones. En este artículo, basados en el datasheet del TCL8H611FBNG de Toshiba, disponible en la Mouser Electronics, detallamos algunas de sus características.

La siguiente información se basa en el datasheet que se puede descargar a través del enlace https://www.mouser.com/TC78H611FNG. De la misma forma, en el siguiente enlace el lector puede encontrar información para su adquisición a través de Mouser Electronics: https://www.mouser.com/ProductDetail/Toshiba/TC78H611FNGEL.

El circuito integrado TLC8H611FNG se suministra en envoltorio de potencia como se muestra en la figura 1.

 


 

 

 

Figura 1 - Envoltura
Figura 1 - Envoltura

 

El diagrama de bloques interno se muestra en la figura 2

 

Figura 2 - Diagrama de bloques
Figura 2 - Diagrama de bloques

 

 

Este componente tiene como tensión de alimentación para el motor 18 V (max) y para el control 6 V. La corriente máxima de salida es de 1,1 A.

Las funciones de los pines se dan en la siguiente tabla:

 


 

 

En la siguiente tabla tenemos las condiciones de operación del componente.

 


 

 

Más información sobre el funcionamiento, las curvas y las formas de onda se pueden ver en el datasheet.

En la figura 3 tenemos un primer circuito de aplicación en el que se controlan dos motores DC con escobillas.

 

Figura 3 - Control de motores DC
Figura 3 - Control de motores DC

 

Para el control de motor de paso de dos fases tenemos el circuito mostrado en la figura 4. Observe la adición de capacitores los más cercanos como sea posible del circuito integrado para desacoplamiento.

Figura 4 - Control del motor de paso
Figura 4 - Control del motor de paso

 

 

 

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