公开(公告)号：US20190146020A1

公开(公告)日：2019-05-16

申请号：US15810245

申请日：2017-11-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sudeep BANERJI ,  Dattatreya Baragur SURYANARAYANA ,  Vikram GAKHAR ,  Preetam TADEPARTHY ,  Vikas LAKHANPAL ,  Muthusubramanian VENKATESWARAN ,  Vishnuvardhan Reddy J.

IPC: G01R31/01 ,  H02M3/156

CPC classification number: G01R31/013 ,  H02M3/156 ,  H02M3/1584 ,  H02M2001/0009

Abstract: A current detection system includes an inductor and a detection circuit coupled across the inductor. The inductor is configured to receive an input signal that includes an input current and generate a voltage across the inductor. The current detection circuit includes a sensing network and a transconductance amplifier. The sensing network includes a capacitor and is configured to monitor a voltage across the inductor. The transconductance amplifier is configured to receive a differential voltage indicative of a voltage drop across the capacitor and output a differential output current proportional to the differential voltage.