Patent ID: 9391518
Filing Date: 2016-07-12
CPC Classification: H02M

Claim Text:
1. A current sensing circuit for a power converter, comprising: a first current sense resistance and a second current sense resistance coupled in series at a current sense node to form a series current sense resistance; the series current sense resistance coupled in parallel with an inductor having an inductance and an inherent resistance, and a first end connected to a switching network; the first current sense resistance coupled to the first end of the inductor, and the second current sense resistance coupled to a second end of the inductor, wherein the first end of the inductor is coupled to a first end of a switching transistor, the switching transistor having a second end coupled to an input power source, the current sensing circuit further comprises: wherein the switching transistor has a control terminal, and the field effect transistor has a control terminal coupled to the control terminal of the switching transistor; and a capacitance coupled in parallel with the first current sense resistance.