Load-dependent current limit for the power supply of a...

Details Load-dependent current limit for the power supply of a... Load-dependent current limit for the power supply of a...

G - Physics

05

F

323/6

G05F 1/577 (2006.01) H02H 3/00 (2006.01)

Patent

CA 1293532

Abstract A load-dependent current limiter for the power supply of a multi-module electronic system has a programming resistor in each module connected between the power supply voltage and a reference bus. The current through each programming resistor is proportional to the current requirements of the module. The voltage of the reference bus, which is proportional to the total current through all the programming resistors, is compared to the voltage developed across a sensing resistor by the total power supply current. When the sense voltage exceeds the reference voltage, indicative of tapping excess power, a signal is sent from the comparator to shutdown the power supply.

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