Reference design for a BLDC motor driver with an built-in AC to DC converter
Reference design for a sensorless DC motor driver with enter from a daily AC dwelling socket. The reference design can take enter from 90 – 264 V and is able to working a small 10 W motor working at 12 VDC. The REFMOT201 is a reference design by ROHM for a three-phase brushless DC motor drive. The reference design permits direct enter of AC energy to a BLDC motor unit by putting in an AC-DC converter circuit within the drive circuit for a three-phase BLDC motor. The reference design has a three-phase motor driver + AC-DC converter (12V output) built-in right into a single board.
A 3-phase BLDC motor drive is a sort of motor drive that’s particularly designed to manage three-phase brushless DC motors. BLDC motor drives are additionally used to manage brushless DC motors, however they could not essentially be designed to particularly work with three-phase motors. The principle distinction between a three-phase BLDC motor drive and different sorts of BLDC motor drives is the variety of phases that the motor has. A 3-phase BLDC motor has three units of windings, whereas different BLDC motors could have two or greater than three units of windings. This distinction within the variety of phases impacts how the motor drive controls the motor.
The principle benefit of Three-phase BLDC motor drives is its increased effectivity, increased energy density, and higher torque-to-weight ratio. These options allow these drives to have a smaller footprint and decrease quantity. Furthermore, the three-phase BLDC motors require minimal upkeep in comparison with different sorts of motors as a result of they don’t have brushes that put on out and must be changed.
The reference design gives exact management over motor pace and torque, making it preferrred for functions the place accuracy is vital. The low-powered reference design gives increased reliability and low noise and vibration making it appropriate to be used in low-powered medical tools or in shopper electronics. The reference design will also be used as fan motor merchandise for small air flow followers, air purifiers, followers, fridges and freezers, industrial air cooling tools, and so on.
Options of REFMOT201
- Enter AC energy provide voltage 90~264V
- Motor DC voltage 10.4~13.2V
- Output present 1.0A(max)
- Sensorless 12V three section brushless DC motor drive
- Motor driver: Motor driver LSI
- Sine wave commutation PWM drive
- Velocity management by DC/PWM enter
- Rotation course setting
- Rotation pace pulse sign output (FG, 1/2FG)
This reference design has been examined by ROHM. It comes with required design assets corresponding to Gerber recordsdata, schematics, BoM, and so on. You will discover further information concerning the reference design on the corporate’s web site. To learn extra about this reference design click on right here.
