Brushless DC Drivers and Controllers
Proudly Designed and Manufactured in Anaheim, CA, USA!

Huge selection of enclosed open frame and board mountable styles.

Input voltages ranging from 6 to 50VDC or 85 to 265VAC

Peak power up to 2,000 Watts and peak current up to 100 Amps

Large local stock base, low prices, friendly technical support, and fast shipping

Custom solutions available upon request - Contact our engineers today!




  • Peak Current: 15, 10, 30, 60, or 100A
  • Max Power: 150-2000W
  • Made in the USA!
Starting At
$77
  • Peak Current: 3A
  • Max Power: 36 or 48W
  • Made in the USA!
Starting At
$29
  • Peak Current: 10, 30, or 60A
  • Max Power: 75 - 360W
  • Made in the USA!
Starting At
$107
  • Peak Current: 10A
  • Max Power: 250W
  • Made in the USA!
Starting At
$92
  • Peak Current: 5, 8, 15, or 30A
  • Max Power: 50-1500W
  • Made in the USA!
Starting At
$129
  • Peak Current: 7.5 or 3A
  • Max Power: 300 or 1000W
  • Made in the USA!
Starting At
$373

BLDC controllers are used in a wide variety of industries and applications including, but not limited to:
  • Appliances
  • Wheel Encoders
  • Ice tray and dust box position sensing
  • Door and Lid open/close detection
  • Low water indicator
  • Motor current monitoring and
  • AC input current detection
  • Automotive (High-temperature and in-cabin)
  • Lighting
  • Wiper systems
  • Airbag deployment systems
  • Brake systems
  • Displays and infotainment
  • Seat belt systems
  • Cosure systems
  • LED Lighting and Displays
  • Billboards
  • Backlighting (cameras, mobile phones, laptop PCs, etc.)
  • Illumination and signals
  • Office Automation
  • Printers
  • Fax machines
  • Shredders

Frequently Asked Questions

Brushless DC controllers - also known as BLDC drivers, speed drivers, and electronic speed controls (ESC) - are devices used to run, or "control," a brushless motor. The main purpose of a brushless controller is to "drive" the brushless motor at a speed where a signal is taken which represents that demanded speed.

Essentially, the controller directs the rotation of the motor. In order for the controller to do so, it must be able to detect the location/position of the rotor. In some cases, encoders of Hell effect sensors are used to measure the rotor position directly. Another approach is to measure the back EMF, in which case Hall sensors are unnecessary. These BLDC controllers are known as "sensorless" drivers.

If the speed of the BLDC motor is measured, that is considered a "feedback" speed controller, also called a "closed-loop" speed controller. If the speed is not measured, it is considered an "open-loop" speed controller. A feedback controller is more complicated than an open-loop controller, but is more powerful and efficient.

There are a number of types of BLDC controllers which are suited for a range of different applications, but most BLDC motor products require brushless DC controllers or BLDC drivers to operate.

With brushless DC controllers, either a Hall Effect Sensor or the back EMF (Electromotive Force) is used to run the motor. The Hall Effect uses three Hall sensors within the motor to help detect the position of the rotor. This method is primarily used ins speed detection, positioning, current sensing, and proximity switching. The magnetic field changes in response to the transducer, which varies its input voltage. A feedback is created by directly returning a voltage since the sensor operates as an analog transducer.

The distance between the Hall plate and a known magnetic field can be determined by a group of sensors (in this case, three) and the relative position of the magnet can be deduced.

A Hall sensor can act as an on/off switch in digital mode when combined with circuitry. The back EMF, also known as the Counter-Electromotive Force, is caused by a changing electromagnetic field. In a BLDC motor, the back EMF is a voltage that occurs where there is motion between the external magnetic field and the armature of the motor. In other words, the voltage is developed in an inductor by an alternating current or pulsating current. At all times, the polarity of the voltage is the reverse of the input voltage. This method is commonly used to measure the motor's position and speed indirectly.

Brushless DC controllers are used in applications including, but not limited to:

  • Appliances
  • Wheel Encoders
  • Ice tray and dust box position sensing
  • Door and Lid open/close detection
  • Low water indicator
  • Motor current monitoring and
  • AC input current detection
  • LED Lighting and Displays
  • Billboards
  • Backlighting (cameras, mobile phones, laptop PCs, etc.)
  • Illumination and signals
  • Automotive (High-temperature and in-cabin)
  • Lighting
  • Wiper systems
  • Airbag deployment systems
  • Brake systems
  • Displays and infotainment
  • Seat belt systems
  • Cosure systems
  • Office Automation
  • Printers
  • Fax machines
  • Shredders

Not necessarily; Hall sensors are only required for feedback systems. A brushless motor may be sensorless where back EMF is used to run the motor, however Hall sensors are required when using Anaheim Automation's BLDC controllers.

Brushless DC controllers are available in a wide range of standard sizes and capabilities.

Brushless driver components typically include, but are not limited to:

  • PCB (Printed Circuit Board)
  • Capacitors
  • Resistors
  • IC, Chips, Microchips
  • Diodes
  • Potentiometers
  • Transistors
  • Terminal Blocks / Screw Terminals
  • Heat Sinks
  • LEDs
  • LDCs

BLDC controllers can also be custom made to order per the specific requirements of a particular application. Please contact an Anaheim Automation applications engineer for details on custom orders.

Helpful Information

The speed of a brushless motor is directly proportional to the supply voltage, meaning that when the supply voltage is reduced, so is the speed and vice versa. For example, if your supply voltage is 12 volts and you decrease it to 6 volts, the motor will then run 50% slower than it had at 12 volts.

How can this be achieved with a battery or supply that is fixed at 12 volts? Brushless DC controllers work by varying the average voltage sent to the motor. This can be done by adjusting the voltage sent to the motor, but this method is inefficient. A much more efficient method is to switch the motor's supply on and off very quickly. When the switching is fast enough, the brushless motor will only recognize the average effect and will not notice that power is being switched on and off. The average speed of the brushless motor increases as the amount of time that the voltage is on increases compared with the amount of time that it is off.

This on/off switching is performed by what is called a power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor). MOSFETs are devices that can turn very large current on and off under the control of a low signal level voltage. The time it takes a motor to slow down and speed up depends on the inertia of the rotor, as well as how much torque and friction there is.

When selecting a BLDC controller for your motor, many factors must be considered. You will need to know your application requirements and make certain that the motor and driver are:

  1. Compatible with one another
  2. Capable of achieving the desired goal

Keep in mind the main features or options you require in a BLDC controller:

How much current are you outputting?
How much voltage are you inputting?
What do you need to control?
What is the rated voltage and speed?
How much current can the motor take or output?
How much power is it rated for?

In many cases, a standard controller/driver with similar or higher ratings to your requirements can be chosen . However, custom solutions are also available for those with precise requirements.

Brushless DC Controllers are used in a variety of applications and industries, including:

  • Appliances
  • Automotive
  • Aerospace
  • CNC
  • Consumer
  • Instrumentation
  • Medical
  • Packaging Equipment
  • Semiconductor

  • Advantages
  • Long lifetime
  • Efficient
  • Customizable
  • Different performance options on one Brushless DC Controllers
  • Disadvantages
  • High cost
  • Complex circuitry
  • An additional unit to a motor (takes up more space)

Occasionally things go wrong with electronics. Always make certain that the environment of your brushless DC controller is within specifications of the unit to ensure that everything will run smoothly, consistently, and safely. Temperature, air, dust, and pressure all play a role in electronics. These factors are frequently unpredictable and change all the time. Make sure to protect against these environmental factors so that your BLDC system can operate properly within the recommended specifications.

When BLDC controllers are run within rated conditions, their lifetimes can be quite long. If the controller is being run within or below its rated conditions, maintenance should be minimal and infrequently required. Anaheim Automation brushless controllers and drivers have been known to last for decades.

When you are having problems with your brushless DC controllers there are a number of things to look for. Different units will have their own way of indicating a problem or fault within the BLDC controllers, but most brushless DC controllers will have a fault light which will indicate that a problem has occurred. Some may also have an additional "alarm" or "alert" noise of some sort.

Typical faults include, but are not limited to:

  • Blown phase
  • Improper parts within unit
  • Blown parts within the unit
  • Improper wiring or installation (Check user guides for specific hook-up diagrams)

There is always that the issue may be caused by an internal short on the board, or another issue that cannot be easily fixed by the user. In these cases, per our Terms and Conditions, Anaheim Automation can provide an RMA (Return Materials Authorization) for the customer to send the unit(s) to our facility for testing and/or repair.

From the 1920s to the 1980s, most electrically driven elevators used the "Ward Leonard Brushless DC Controllers" system. This control system was used up until the early 21st century. Over time, several variations were implemented into the Ward Leonard system, but were still called by the same name generally. Electrical and mechanical adjustable brushless DC controllers and other new types developed after the Ward Leonard system was introduced. Electron tube brushless DC controllers began to develop in the 1920s, but electronic controls didn’t begin to displace the Ward Leonard system until thyristor-controlled drives were developed in the late 1960s. Ward Leonard's Brushless DC Controllers were rapidly becoming obsolete by the mid 1970s, but replacements for the existing Ward Leonard brushless DC controllers have continued until the beginning of the 21st century.

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