Rohm Referencedesigns

REFMOT201

REFMOT201 - Reference Design

AC supply, Sensor-less, Three Phase Brushless DC motor drive

An evaluation board that enables direct input of AC power to a BLDC motor unit by installing an ACDC converter circuit in the drive circuit for a three phase DC brushless motor (hereafter BLDC motor) . This is an evaluation board that enables direct input of AC power to the BLDC motor unit. Targeting small motors up to 10W class, this evaluation board has a three phase motor driver + ACDC converter (12V output) on one small board. It is possible to drive a three phase BLDC motor with an AC motor interface.

  • Input AC power supply voltage 90to264V
  • Motor DC voltage 10.4to13.2V
  • Output current 1.0A(max)
  • Sensorless 12V three phase brushless DC motor drive
  • Motor driver: Motor driver LSI
  • Sine wave commutation PWM drive
  • Speed control by DC/PWM input
  • Rotation direction setting
  • Rotation speed pulse signal output (FG, 1/2FG)

RMS308NA-008

Design Resources

 

Specifications

 
Board Number Input voltage Output current Driving method Other features Size
RMS308NA-008 Input AC power supply voltage 90V to 264V, motor DC voltage 10.4V to 13.2V 1A(Max.) depends on current capability of motor driver LSI Sensorless sine-wave commutation drive ( Three-phase brushless DC motor ) Input: Control input (DC or PWM), Rotation direction switching.
Output: FG output.		 55mm×55mm

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
RMS308NA-008 BM2P121X-Z AC/DC Converters ICs - Recommended - - - -
RMS308NA-008 BD63242EFV 3 Phase Brushless DC Motor Drivers - Recommended - -