公开(公告)号：US20200251465A1

公开(公告)日：2020-08-06

申请号：US16264065

申请日：2019-01-31

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： EUNG JUNG KIM ,  KYLE CLIFTON SCHULMEYER ,  SUALP ARAS ,  MD ABIDUR RAHMAN ,  XIAOCHUN ZHAO

IPC分类号： H01L27/02 ,  H02H9/04 ,  G05F1/565

摘要： A system includes a clamp network coupled between an input and an output and configured to clamp a voltage between the input and the output to a first clamp voltage based on the presence of a trigger signal and to a second clamp voltage based on the absence of the trigger signal. The second clamp voltage is greater than the first clamp voltage and the first clamp voltage is less than a breakdown voltage of the power transistor device. A detector circuit is coupled to the input and the output. A power transistor device may also be coupled between the input and the output. The detector circuit is configured to detect a pulse signal at the input or the output while the power transistor device is off and to generate the trigger signal for a time interval based on detecting the pulse signal.