Is there any internal short circuit protection for USB 2.0?

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hkBattousai

Joined: 16 Jun 2007
Posts: 100
Helped: 4
Location: Turkey

15 Oct 2009 17:33 Is there any internal short circuit protection for USB 2.0?

I'm trying to interface USB 2.0 port with PIC18F2550. I am planning to supply circuit with the 5V voltage from USB port as well. I am worried about one matter, what happens if I accidentally short-circuit any two pins of USB port? Is there any internal protection for this possibility, or should I implement it explicitly?

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pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

16 Oct 2009 7:43 Is there any internal short circuit protection for USB 2.0?

New versions of PC's and laptops are provided with short circuit protection with poly fuses to prevent any short circuits in the USB port. Whenever a short occurs, a pop out window will notify bout the situation. But anyways, take possible precautions as prevention is better than cure. Cheers.