公开(公告)号：US20220190755A1

公开(公告)日：2022-06-16

申请号：US17552065

申请日：2021-12-15

申请人： Melexis Bulgaria EOOD

发明人： Dimitar TODOROV ,  Dirk LEMAN

IPC分类号： H02P6/10

摘要： A method for controlling a single coil BLDC motor having an electrical time constant, the method includes EHP sequences having a pulse train with at least two driving pulses of a same polarity, each driving pulse comprises: applying a driving signal during a torque generating period (TGP), followed by a non-torque generating period (NTGP); monitoring the phase current, wherein the sensing window lasts at least during a time constant, which is the electrical time constant or an approximation thereof, if the sensing window is during the TGP, and wherein the sensing window minimally lasts until the phase current has reduced to less than half the maximum phase current which was generated during the TGP if the sensing window is during the NTGP; determining parameters for the ongoing EHP, and/or for at least one next EHP sequence based on the obtained phase current information.

公开(公告)号：US20220368251A1

公开(公告)日：2022-11-17

申请号：US17741628

申请日：2022-05-11

申请人： Melexis Bulgaria EOOD

发明人： Dirk LEMAN

IPC分类号： H02P6/08 ,  H02P6/17 ,  H02P6/26 ,  H02P29/024 ,  H02P29/68

摘要： A motor driver for driving a single coil motor, the motor driver includes: a bridge driver configured for applying a driving signal to the single coil by commuting a motor voltage (Vmot) or a motor current (Imot), supplied to the bridge driver, between terminals (OUT1, OUT2) of the single coil; a controller configured for controlling the commuting of the bridge driver and for setting a preferred value of the motor voltage in function of a preferred operating point; a first voltage regulator configured for regulating the motor voltage or the motor current to the preferred value.