公开(公告)号：DE69725126D1

公开(公告)日：2003-10-30

申请号：DE69725126

申请日：1997-07-28

Applicant: ST MICROELECTRONICS SRL

Inventor： PAPPALARDO SALVATORE ,  NOVELLI ALDO ,  GENOVA ANGELO ,  DE MARCO ALBERTO

IPC: H02M1/00 ,  H02M1/38 ,  H02P8/14 ,  H02M7/538

Abstract: In multiphase driving systems of electric motors in a switching mode employing distinct integrated half-bridge output stages, the use of multiple external components for each integrated half-bridge stage to implement functions of adjustment of the switching dead-time and of disabling/enabling of the half-bridge stage can be avoided and an improved matching obtained by using single external components connected in common to the dedicated pins of all the distinct integrated half-bridge output stages. This is achieved by duplicating the disabling comparator, respectfully for the power transistor of the pull-up branch and for the power transistor of the pull-down branch in each integrated half-bridge stage.