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30Amp 5V-30V DC Motor Driver

30Amp 5V-30V DC Motor Driver

  • Brand: Cytron
  • Product Code: MD30C
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  • Warranty Period: 12 months
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Note: MD30C is Revision 2.0 since January 2016.
We know DC brushed motor is widely used for many different applications; from conveyor, AGV (Automated Guide Vehicle), mobile robot and combat robot. One of the reasons is the ease to use it, just connect the two terminals of motor to power respectively, it will start rotating, so simple. Yet, to control the speed and direction from a controller, a motor driver is needed.
This is MD30C DC brushed motor driver. It is the successor of MD30B which is designed to drive medium to high power brushed DC motor with output current up to 80A peak (1 second) and 30A continuously. Full NMOS(solid state) design not only provides faster switching time, it is also more efficient and no heatsink or fan is required to get 30A continuous in room temperature.
Besides that, MD30C also incorporates some user friendly features such as reverse polarity protection for Vin/Vmotor and onboard PWM generator which allows it to operate without additional controller. The motor can simply be controlled with the onboard switches and potentiometer. External switches and potentiometer can also be used.
Which motor is good to be driven by MD30C? As long as the motor:
  • DC Brushed motor (Two terminals)
  • Operating voltage from 5V to 30VDC
  • Rated Current <= 30A
  • Peak Current <= 80A

Example of suitable DC brush motor with MD10C (Not limit to):

  • Bi-directional control for 1 brushed DC motor, single channel
  • Motor Voltage: 5V to 30VDC
  • Maximum Output Current: 80A peak (1 second), 30A continuous
  • Reverse polarity protection for Vmotor
  • 3.3V and 5V logic level input, compatible with:
  • Full NMOS H-Bridge for higher efficiency and no heat sink is required
  • Regenerative Braking
  • Brakes the motor when PWM pin is low (logic low)
  • Speed control PWM frequency up to 20KHz (Actual output frequency is same as input frequency when external PWM is selected)
  • Onboard PWM generator with switches and potentiometer for standalone operation
  • Support both locked-antiphase and sign-magnitude for external PWM operation. Note: PWM is not "RC PWM"
Dimension: ~94mm x ~79mm
Operating Condition
Motor Channel 1
Operating Voltage (VDC) 5 to 25 (Rev 1.0) , 5 to 30 (Rev 2.0 )
Peak Current (A) 80 (1 seconds)
Continuous Current (A) 30
Operating Modes
Arduino Shield No- can be used with Wire connection
PWM (Lock-Antiphase and Sign-Magnitude) Yes
Analog No
RC Servo Signal No
Special Protection
Polarity Protection Yes
LEDs Indicator Yes
Test/Manual Button Yes
Cooling Fan NO
Other Features
others 3.3 and 5V compatible input
Speed Control On board Speed control

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The motor controller seems to have a bunch of fancy stuff, like arduino support. But can I not use all that stuff and just plug in a pot and a motor and battery and it work fine? I don't really want to fiddle around with it too much. ( James, 02/06/2019 )
Hi, you may refer to this link on how to operate this motor driver without MCU.
The 7812 ic side is heating up when used with or without motor . Is it Usual? ( Mohit Agarwal, 30/03/2019 )
Hi, can you please email some photo of your setup to support@cytron.io. We will help you in details 
Hi, I'm asking for a schematic of the board (or at the very least, your input schematic for the external PWM and Direction Pins).

I'm looking to use the output of an existing under-powered (24v, 15A) H-bridge controller as the input to this MD30C. I'm trying to use passives that I have on hand and I want to make sure I'm not burning out your board.

( Ben, 31/01/2019 )
Hi, sorry the schematic is a confidential however for your problem you may email the details to our support@cytron.io. We will help you with that. Thanks. 
Hi, is it going to be available very soon? Thanks ( Abduelhakem, 07/12/2017 )
Hi, it is in stock now, it is hot item, grab fast! Thanks.
hi cytron, is cytron provide a data sheet of this 30A DC Motor Driver? ( nur , 02/11/2017 )
Hi, you can refer to MD30C User's Manual under Attachment tab. Thanks.
Will it be restock very soon? Thanks ( CK Teo, 19/10/2017 )
Hi, it will be restocked in 1 week. Thanks.
What happens to the regenerative current? Can I use this driver with a switching power supply?
( Guillaume, 03/10/2017 )
Hi, we advise to parallel your switching power supply with battery at the same voltage. So the regenerative current will charge back the battery. Else, the regenerative current no where to go and might burned the motor driver. For further questions, please visit to our technical forum for similar question or post your question there, as this session is only for short inquiry. Thanks.
unfotunately , i connecting battery to the motor port so that my motor driver is not working right now.
can i repair these module?
if yes then how can i ?
( Utsav, 01/10/2017 )

Hi, you may send some of your pictures and sated your problem to us at support@cytron.com.my . We will try to see if there is a chance to repair it or not.


If using 24v, can I go up to 30a continous? ( badrol, 08/07/2017 )
Hi, yes it can. For further inquiry, please visit our technical forum as this session is only for short inquiry. Thanks.
What is the hole spacing on this board? ( Matt, 29/06/2017 )
Hi, we have update hole spacing dimension in MD30C User's Manual under 5.0 Dimension section (page 8). Thanks.

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Tags: MD30C, 30A DC Motor Driver, Robot Controller, DC Motor Driver, 120W DC Brush Motor 30a, motor, driver, md30c, H-Bridge, Solar Tracker, Rover