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Random photo
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Routage achevé
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Le routage de la carte de gestion des alimentations n'a pas été simple mais il est achevé. Comme contrainte, je voulais une carte contenant la partie filtrage du secteur, alimentation isolée, régulation et la logique séquentielle. Je voulais aussi avoir des voyants indiquant l'état des différents registres.
Le circuit complet tient sur un PCB de quatre couches FR4 35µm pour toutes les couches de dimension 40cm par 18cm. J'aurais pu le faire plus petit en prenant des composants CMS, mais cela aurait nécessité l'intervention d'un câbleur professionnel, ce qui, pour de très petites séries, a un coût prohibitif.
Fig. 1 : vue d'ensemble
On voit mal de loin, alors voici une vue de plus près. Il y a du monde. Les pistes de signal font 0,254 mm (10 mils).
Fig. 2 : détail
Cette carte sera fabriquée par Safe-PCB. Je travaille de longue date avec eux, ils font un excellent travail sur des cartes huit couches avec des pistes de 5 mils. Cela ne devrait donc pas leur poser de problème.
Une dernière image pour la route, une vue 3D. Je n'ai pas tous les modèles de composants, certaines empreintes sont vides mais cela donne une bonne idée du résultat.
Fig. 3 : vue 3D de la carte de gestion des alimentations
Naturellement, les normes CE ont été respectées durant le routage. Le logo n'est pas usurpé.
Aucun commentaire pour le moment
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