PN00218-DME7 SyRen 50A Regenerative Motor Driver

Dimension Engineering

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The SyRen motor driver is one of the most versatile, efficient and easy to use motor drivers on the market.

Out of the box, the SyRen 50 can supply a single DC brushed motor with up to 50A continuously. Peak currents of 100A are achievable for a few seconds.

Overcurrent and thermal protection means you'll never have to worry about killing the driver with accidental stalls or by hooking up too big a motor.

With just one SyRen driver you can control a motor with: analog voltage, radio control, serial and packetized serial. You can build many different robots of increasing complexity for years to come with a SyRen.

The operating mode is set with the onboard DIP switches so there are no jumpers to lose. The SyRen features screw terminal connectors - making it possible for you to build a robot without even soldering.

SyRen is the first synchronous regenerative motor driver in its class. The regenerative topology means that your batteries get recharged whenever you command your robot to slow down or reverse. SyRen also allows you to make very fast stops and reverses - giving your robot a quick and nimble edge.

SyRen has a built in 5V BEC that can provide power to a microcontroller or R/C receiver. The lithium cutoff mode allows SyRen to operate safely with lithium ion and lithium polymer battery packs - the highest energy density batteries available.

SyRen's transistors are switched at ultrasonic speeds (32kHz), meaning no one will be able to hear your robot ninja army approaching.

Use of our motor drivers with cheap AC adapters is not recommended. Use a battery or at least put a battery in parallel with a DC supply.

Product Specs:

Model: SyRen 50
Specifications: 50A continuous, 100A peak
6-30V nominal, 33.6V absolute maximum 

Synchronous regenerative drive
Ultra-sonic switching frequency
Thermal and overcurrent protection
Lithium protection mode 

Input modes: Analog, R/C, simplified serial, packetized serial

Size: 3.0” x 3.5” x 1.3”
76.5 x 89 x 33 mm
Applications: Combat robots up to 80lb
Normal and hobby robots up to 250lb
Differential drive robots
Electric vehicles, ride-on toys, scooters

Easy speed/direction control for pumps, conveyors, automation and any application that uses a brushed DC motor


Manual and Documents

Libraries for Arduino

Demo video of running a motor bidirectionally with a potentiometer

5 Reviews Hide Reviews Show Reviews

  • 5
    Works great!

    Posted by Dave on Jan 14th 2024

    Always reliable. Have used many in my 7-1/2" gauge model train locomotives.

  • 5
    Syren 50 works great for my application

    Posted by Mike Trickett on Feb 21st 2022

    Customer tech support is number 1

  • 5
    SyRen 50

    Posted by Glenn Eielson on Dec 24th 2020

    Works very good. I used the DEScribe software to change the serial baud rate from 9600 to 115200. That also worked very good.

  • 5
    Outstanding product! I was recommended this product from many people.

    Posted by Gary on Apr 25th 2020

    Very fast delivery! Next day. Can’t get any faster than that!

  • 5
    SyRen 50

    Posted by Paul Jorgenson on Mar 9th 2019

    This is a very capable motor control. I run it on a home-built electric locomotive that runs on 7 1/2" gauge (1/8 scale) and haul several passengers behind the locomotive, up and down hills. The regenerative braking is very good and helps to extend the battery charge by putting energy back into the battery when decelerating or going down hill. I also have a 25 amp version on a robot. Dimension Engineering motor drivers are my controller of choice.