PN00218-DME6 SyRen 25A 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. It is suitable for medium powered robots - up to 50lbs in combat or 180lbs for general purpose robotics.

Out of the box, the SyRen 25 can supply a single DC brushed motor with up to 25A continuously. Peak currents of 45A 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. Owning two SyRens allows you to build differential drive (tank style) robots because they can work in tandem with built in mixing.

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 25
Specifications: 25A continuous, 45A peak
6-24V nominal, 30V 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: 2.4” x 2.3” x .8”
61 x 58 x 21 mm
Applications: Combat robots up to 50lb
Normal and hobby robots up to 180lb
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

2 Reviews Hide Reviews Show Reviews

  • 5
    Motor controller with regenerative braking

    Posted by Dennis L Megrditchian on Mar 7th 2022

    My purpose in buying the PN00218-DME6 SYREN 25A was to demonstrate the regenerative braking process that EVs and Plug-in EVs use. So far I am quite happy with how it functions. I have not taken it to its 25Amp limit; so far only around 10amps. The gentleman who I spoke to by phone was very approachable and spent time understanding my needs.

  • 5

    Posted by Tom on Nov 10th 2021

    Works perfect for intended project. Product was as described and shipped in time. Good guy , he actually talks to you