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New product: G2 High-Power Motor Driver 24v13
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We are excited to announce the release of the Pololu G2 High-Power Motor Driver 24v13. Like our original high-power motor drivers, this board is a discrete MOSFET H-bridge that is designed to drive large DC brushed motors. As the first of our second-generation high-power motor drivers, the 24v13 can supply a motor with a continuous current as high as 13 A at voltages between 6.5 V and 40 V (absolute maximum).
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The G2 driver is designed to be a near drop-in replacement for its predecessor, with an identical form factor and a similar pinout, but it offers a number of new features and improvements over the older version. Reverse-voltage protection on the power supply inputs helps prevent instant destruction if a battery is connected backwards, while basic current sensing and limiting functionality help the driver handle large loads more gracefully. The G2 driver is also compatible with systems running at 3.3 V (and lower), unlike our original high-power motor drivers.
To learn more about the motor driver’s features and capabilities, see its product page.
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16 comments
All of our High-Power Motor Drivers, including this one, were discounted during our Black Friday sale. The sale is now over, and the offers are no longer available.
-Jon
The G2 High-Power Motor Driver 24v13 can be used at 100kHz with locked-antiphase control. Whether a heat sink is needed for your application will depend on your motor and the load you put on it. However, the specifications we give on the driver's product page are for operation at ambient room temperature without a heat sink.
-Claire
How long is "a brief time"? is it a little microsecond?
-Claire
where do I find schematic and BOM for G2 High-Power Motor Driver 24v13?
We do not release the schematic for that driver. Is there some other specific information about the driver you are looking for?
-Claire
-Claire
When VIN is turned on to 6.5V (consumes 0.038A) I see also VM go from initial setting 2.0V rise to 5.8V. Is that normal?
Thanks,
A quiescent current of 38mA seems a little high, but it is probably fine. I do not understand what the other part of your question is asking. If you are having trouble with your G2 High-Power Motor Driver or are looking for more in-depth specifications, I suggest posting on our forum, which is a better platform for those things.
-Claire
However, given that the current sensing is somewhat unreliable and I really need to use it... can you tell me what H-bridge driver is used or from where the current sense is being derived?
I'm sure it originates with a sense resistor, but is it a separate circuit or is it contained within the H-bridge driver?
Moreover, is there any method or configuration which would make it more reliable at lower currents?
Thanks,
Gary
As Claire commented before, we do not release the schematic or components for these drivers, but we only expect the built-in current sensing on these drivers to be less precise at low currents. If you have an application where you need more precision, or where you expect to regularly need low-current measurements, then you might consider using an external current sensor like one of these:
https://www.pololu.com/category/118/current-sensors
The schematics and datasheets for the current sensors can be found under the "Resources" tab of their product pages.
- Patrick
The driver is a MOSFET H-bridge, so you do not need external flyback diodes.
- Patrick
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