Patent ID: 6798152
Filing Date: 2004-09-28
Classification: H05B,Y02B

Abstract:
A circuit comprising:a first current limiting switch comprising a first current limiting switch enable node and a first current limiting switch output node, the first current limiting switch to limit an amount of current provided at the first current limiting switch output node to a fist predefined amount; a first output port coupled to the first current limiting switch output node; a second current limiting switch comprising a second current limiting switch enable node and a second current limiting switch output node, the second current limiting switch to limit an amount of current provided at the second current limiting switch output node to a second predefined amount; a second output port coupled to the second current limiting switch output node; a first input port; a sensor including: an input coupled to the first input port; an output to provide an indication of an amount of current received at the input; a current limiter including: current input coupled to said output of said sensor, a control input to receive a control; a first current output node to provide current received at the current input when a signal at the control input is asserted; a second current output node to provide current received at the current input when the signal at the control input is deasserted; and a diode coupled in series with said current limiter, said diode to provide reverse bias protection.