Bus loop power interface and method

Details Bus loop power interface and method Bus loop power interface and method

H - Electricity

04

L

H04L 25/02 (2006.01)

Patent

CA 2650475

A bus loop power interface (100) is provided according to the invention. The bus loop power interface (100) comprises a voltage control module (110) receiving a loop voltage VLOOP and generating a predetermined supply voltage VSUPPLY, an impedance control module (120) coupled to the voltage control module (110), with the impedance control module (120) receiving a loop current ILOOP and generating a predetermined supply current ISUPPLY, and a feedback (115) coupled between the voltage control module (110) and the impedance control module (120). The feedback (115) provides a feedback signal to the voltage control module (110) that enables the voltage control module (110) to substantially maintain the predetermined supply voltage VSUPPLY.

L'invention concerne une interface d'alimentation de boucle de bus (100). L'interface d'alimentation de boucle de bus (100) comprend un module de commande de tension (110) recevant une tension de boucle VBOUCLEet générant une tension d'alimentation prédéterminée VALIMENTATION, un module de commande d'impédance (120) couplé au module de commande de tension (110), le module de commande d'impédance (120) recevant un courant de boucle IBOUCLE et générant un courant d'alimentation prédéterminé IALIMENTATION, et une rétroaction (115) couplée entre le module de commande de tension (110) et le module de commande d'impédance (120). La rétroaction (115) fournit un signal de rétroaction au module de commande de tension (110) qui autorise le module de commande de tension (110) à maintenir de façon substantielle la tension d'alimentation prédéterminée VALIMENTATION.

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