公开(公告)号：JPH1175390A

公开(公告)日：1999-03-16

申请号：JP18496798

申请日：1998-06-30

Applicant: ST MICROELECTRON INC

Inventor： CARLO BAATEMARA ,  MENEGOLI PAOLO ,  BRAMBILLA MASSIMILIANO

IPC: H02P1/52 ,  H02P6/20 ,  H02P23/00 ,  H02P7/62

Abstract: PROBLEM TO BE SOLVED: To improve a method and equipment for starting the rotation of a rotor in a multi-phase DC motor, by controlling the operation of a three-phase DC motor. SOLUTION: A microcontroller 40 controls drive currents in coils 8, 9, 10 through a serial interface 54, a sequencer 56 and a predriver circuit 58. The microcontroller 40 supplies data from a port 60 to the serial interface 54, and the serial interface 54 generates signals based on the data and supplies the signals to the sequencer 56. The sequencer 56 has a set of 8-bit registers, and each register retains information for giving instructions to the predriver circuit 58 for making driving transistors 13, 14, 15, 16, 18 and 20 to either conducting state or non-conducting state.