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refmot101reference design / application evaluation kit | rohm co., ltd.-ag旗舰平台尊龙

12v supply, 3 hall sensor, three phase brushless dc motor drive reference deisgn

this design consists of a three-hole sensor three-phase brushless dc motor pre-driver and a mosfet. it is an evaluation board that can drive a brushless dc motor with a supply voltage of 12v (typ) and a motor current of 6a (max) by adding a speed control circuit using a microcontroller to the 3 hall sensor 3-phase brushless dc motor drive circuit. it requires only one external power supply. when a hall ic is used, the logic ic can detect the direction of rotation and output a triple multiplier fg.

  • 3 hole sensor three phase brushless dc motor pre-driver and output mos p n configuration
  • supply voltage 12v(typ)
  • output current 6a(max)
  • pwm drive with 120 degree commutation.
  • rotation direction switching, short braking function
  • rotation direction detection output, triple fg output possible (when hall ic is used)
  • speed control by mcu is possible.

design resources

  • rms332sd-011


board number input voltage output current driving method other features size
rms332sd-011 6.0v to 18.0v 6a(max.) depending on driving capability of mosfet 3 hole sensor 120 degree commutation input: control input (dc or pwm), rotation direction switching, short brake.
outputs: rotation direction detection, triple multiplier fg output, fg output.

distribution inventory

board number distributor quantity available

key components

board number part number product category datasheet status spice ltspice thermal model symbol & footprint 3d step samacsys ecad library calc tool rohm solution simulator
rms332sd-011 bd450m2efj-c linear regulators active solution simulator
rms332sd-011 bd63001amuv 3 phase brushless dc motor drivers recommended -
rms332sd-011 rrh140p03 12 to 150v mosfets recommended -
rms332sd-011 rs3e135bn 12 to 150v mosfets active -