MOS pour courant important et basse tension

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Bonjour











la commande se fait par des contacts reed

la tension a disposition sera du 3,6 V  ( 3 accus de 1,2 V ( 10A/h)

j'utilisais es IRF9310PbF  un IC pour 2 led c-a-d un courant d'env 6 A



Maintenant en ayant une tension bien plus basse, le soucis que j'ai  


Je n'ai pas trop de place  comme d'habitude.






Claude




Re: MOS pour courant important et basse tension
On 15.02.2018 11:43, Claude M wrote:
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Je dirais a priori que la tension de grille Vgs n'est plus suffisante  

canal suffisamment basse.

-10V et -4,5V. La page 5 montre la relation entre Rds et Vgs, c'est pas  

Il faudrait utiliser des MOS avec une tension de seuil plus basse, ou  
trouver un moyen d'augmenter la tension de grille.

Nicolas

Re: MOS pour courant important et basse tension

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place
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Ce mosfet ferait l'affaire : https://www.mouser.fr/ProductDetail/Infineon-T
echnologies/IPB120P04P4L-03?qs=sGAEpiMZZMshyDBzk1%2fWi8PS859SDBCOlvHIZfJT
T4I%3d

A 3.6v, il passe 40A et a un RDS d'environ 9mOhms avec un Vgs de -3v. Soit  


Seb.

Re: MOS pour courant important et basse tension


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Merci SEB

je vais essayer d'avoir quelques samples pour faire des essais mais  




Claude


Re: MOS pour courant important et basse tension



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conversion pour les tensions CPU.






Re: MOS pour courant important et basse tension








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Re: MOS pour courant important et basse tension




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Re: MOS pour courant important et basse tension





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pas top pour une carte avec des circuits dil.


--  
http://www.franck-pissotte.fr/ vide grenier:  reste plus grand chose
http://www.pascaland.org/ compilateurs, sources, liens langage pascal,  
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Re : MOS pour courant important et basse tension



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aussi.
Ne pas oublier d'enlever le poulet avant!


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Re: Re : MOS pour courant important et basse tension
Le Wed, 7 Mar 2018 09:32:49 +0100,




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    avec une soudure RoHS.

    JKB

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=> http://grincheux.de-charybde-en-scylla.fr
=> http://loubardes.de-charybde-en-scylla.fr

Re : Re : MOS pour courant important et basse tension

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Re: MOS pour courant important et basse tension


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le bons sens

en mesure avec une tension de 3V j'ai une RDS 7,7 mOhms puis plus bas  
que 2,8 V alors cela monte ( 12 mOhms(  2,6 volts = 28 mOhms)  mais a ce  


Merci Seb pour l'info

Claude

Re: MOS pour courant important et basse tension


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Bonjour


allez dans le bons sens

en mesure avec une tension de 3V j'ai une RDS 7,7 mOhms puis plus bas  
que 2,8 V alors cela monte : 12 mOhms ( 2,6 volts = 28 mOhms)  mais a ce  


Merci Seb pour l'info

Claude

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