公开(公告)号：US20220302840A1

公开(公告)日：2022-09-22

申请号：US17697008

申请日：2022-03-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rida Shawky ASSAAD ,  Angelo William PEREIRA ,  Gangqiang ZHANG ,  Kae Ann WONG

IPC: H02M3/158 ,  H02M1/08

Abstract: In a switching regulator driver, a sense circuit has a transistor current input and a sense circuit output. A logic circuit has a logic circuit input and first and second outputs. The logic circuit input is coupled to the sense circuit output. A counter has a counter clock input, a counter control input and a counter output. The counter clock input is coupled to the first output. The counter control input is coupled to the second output. The counter is configured to provide a count value at the counter output. A programmable drive strength circuit has a drive strength circuit input and a transistor control output. The drive strength circuit input is coupled to the counter output. The programmable drive strength circuit is configured to adjust a drive current at the transistor control output based on the count value.