By the way, here's a schematic to help you understand...
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"Ziguy" a écrit dans le message de news:b9VVa.30$ snipped-for-privacy@news20.bellglobal.com...
I design a automotive application that has 3 wires (supply, ground and a
> output). Internaly, this output is connected to the ouput of a high side
> power mosfet switch. In order to protect my circuit from wrong connection,
I
put a diode in serie with the output but now I have big problems with
power
dissipation. The output can source up to 5A.
>
> Instead, what do you think if I putting a diode between the supply and the
> output??? That way, if the user connect the supply wire to the ground and
> the output wire to the battery+ (my last unprotected fatal scenario), he
> will only blow his fuse!
>
> Good idea?
>
>
>