公开(公告)号：US11777425B2

公开(公告)日：2023-10-03

申请号：US17676610

申请日：2022-02-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Venkata Naresh Kotikelapudi ,  Laxman Sreekumar ,  Anand Yadav

IPC: H02P8/38 ,  H02P8/12

CPC classification number: H02P8/38 ,  H02P8/12

Abstract: In accordance with at least one example of the description, a circuit is adapted to be coupled to a coil of a motor via an H-bridge circuit. The circuit includes a duty sensor, a subtractor, and a comparator. The duty sensor is coupled to the coil of the motor and is configured to provide raw run duty data responsive to a coil current through the coil. The subtractor is coupled to the duty sensor and is configured to provide a differential duty signal responsive to a stall duty signal and a run duty signal obtained using the raw run duty data. The comparator is coupled to the subtractor and is configured to provide a stall signal indicative of a stall condition for the motor responsive to the differential duty signal and a threshold value.