公开(公告)号：US20240283364A1

公开(公告)日：2024-08-22

申请号：US18171214

申请日：2023-02-17

申请人： NXP USA, Inc.

发明人： Joan Wichard Strijker ,  Jeroen Kleinpenning

IPC分类号： H02M3/335 ,  H02M1/00 ,  H02M1/36

CPC分类号： H02M3/33523 ,  H02M1/0009 ,  H02M1/36

摘要： One example discloses a switched mode power supply (SMPS), comprising: an inductor configured to supply an inductor current to a load; a charging circuit configured to increase an inductor current during a primary stroke time window, and to decrease the inductor current during a secondary stroke time window; wherein the charging circuit is configured to end the primary stroke when the inductor current reaches a high current limit; wherein the charging circuit is configured to set the secondary stroke time window to a predicted duration; wherein the charging circuit is configured to automatically start the primary stroke after the predicted duration and measure the inductor current at the end of a detection window; wherein if the inductor current is below a low limit at the end of the detection window, then the charging circuit is configured to shorten the predicted duration; and wherein if the inductor current is above the low limit at the end of the detection window, then the charging circuit is configured to lengthen the predicted duration.