公开(公告)号：US20180191271A1

公开(公告)日：2018-07-05

申请号：US15395971

申请日：2016-12-30

申请人： Texas Instruments Incorporated

发明人： Salvatore Giombanco ,  Saurav Bandyopadhyay ,  Salvatore Vincenzo Capici

IPC分类号： H02M7/48 ,  H02M7/217 ,  H02M7/04 ,  H02M7/523 ,  H02M1/42 ,  H02M3/07

CPC分类号： H02M7/4826 ,  H02M1/4241 ,  H02M3/07 ,  H02M3/33576 ,  H02M7/043 ,  H02M7/217 ,  H02M7/523 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2007/4811 ,  H02M2007/4815 ,  H02M2007/4818 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491

摘要： Embodiments includes systems, methods, and apparatuses for determining a resonant frequency of an LLC converter via a primary side of the LLC converter. In one embodiment, a circuit comprises an LLC converter and a resonant frequency determination unit, the resonant frequency determination unit configured to monitor electrical current on the primary side of the LLC converter, isolate a portion of the electrical current, determine, based on the portion of the electrical current, a crossing point, and determine, based on the crossing point, a resonant frequency of the LLC converter.