公开(公告)号：US20230052689A1

公开(公告)日：2023-02-16

申请号：US17875840

申请日：2022-07-28

Applicant: Texas Instruments Incorporated

Inventor： Lei Ding ,  Srinath Mathur Ramaswamy ,  Dok Won Lee ,  Steven Howard

IPC: G01R33/07 ,  G01R19/02 ,  H02M1/00

Abstract: Current sensing techniques. In an example, a current sensing method includes: generating a first magnetic field measurement; generating a second magnetic field measurement; generating a frequency estimate of a current; calculating a root-mean-square (RMS) value of an estimated amplitude of the current; and generating a temperature estimate of an integrated circuit (IC) configured to perform the method. The method also includes generating a first weighting factor and a second weighting factor based on the frequency estimate, the RMS value, and the temperature estimate, the first weighting factor to control amplification of the first magnetic field measurement and the second weighting factor to control amplification of the second magnetic field measurement.