Power Distribution Switches Question

cfernandez · Joined: 18 Oct 2003 Posts: 145

Hi,

In my design I have multiples voltage input (USB, Jack, etc.) and I need a circuit that I when connect USB block the other voltage input, or if I connect the Jack block the USB input.

I see the Texas Instrument IC TPS2082, but I want to know if exist other way for make this in my design??

Any have a answer??

Thank you very much!!

Best Regards,

libor · Joined: 14 Dec 2004 Posts: 288 Location: Hungary

What about two diodes with common cathodes at the ps input ? The higher voltage will supply your circuit. I suggest Schottkies because of their lower voltage drop value.

cfernandez · Joined: 18 Oct 2003 Posts: 145

Can you send me a little circuit?, I cannot drop voltage in my design.

Thank you very much!!

Best Regards,