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Disclosed is a method of protecting a USB port from excessive power drain. Benefits include decreased loss of USB ASIC circuitry on PC motherboards and in USB hubs.
English (United States)
This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
100% of the total text.
Method of protecting a USB port from excessive power drain
Disclosed is a method of protecting a USB port from excessive
power drain. Benefits include decreased loss of USB ASIC circuitry on PC
motherboards and in USB hubs.
the current drive towards USB peripherals, a means for protecting the USB ASIC
circuitry built into PC motherboards and USB hubs is necessary. It is becoming
commonplace for USB ASICs and circuits to fail when connected to USB
peripherals which exhibit heavy current draws in excess of USB specifications.
Such current draws may occur during power cycling of the PC or USB hub while
the USB peripheral remains connected to the PC USB port or a US13 hub.
conventional circuit breaker exists to protect USB circuitry.
disclosed method is a small in‐line device incorporating a user resettable
breaker which trips when power draw from the USB peripheral exceeds USB
specifications (see Figure 1).
implementation of the internal circuit for the resettable USB circuit breaker
can utilize a myriad of off‐the‐shelf resettable circuit breaking switches.