Pulsed current sensing

摘要

A system and method are provided for sensing current. A current source is configured to generate a current and a pulsed sense enable signal is generated. A sense voltage across a resistive sense mechanism is sampled according to the sense enable signal, where the sense voltage represents a measurement of the current. A system includes the current source and a current sensing unit. The current source is configured to generate a current. The current sensing unit is coupled the current source and is configured to generate a pulsed sense enable signal and sample the sense voltage across a resistive sense mechanism according to the pulsed sense enable signal.

主权项

1. A method, comprising:
configuring a current source to generate a current by alternately enabling a first switching mechanism to couple the current source to an electric power source while disabling a second switching mechanism to decouple the current source from a current sink and then disabling the first switching mechanism to decouple the current source from the electric power source while enabling the second switching mechanism to couple the current source to the current sink; generating a pulsed sense enable signal; and sampling a sense voltage across a resistive sense mechanism according to the pulsed sense enable signal while the current source is coupled to the electric power source, wherein the sense voltage represents a measurement of the current.