I have a Sabertooth RB-Dim-19:
Am planing on using a 3S Lipo battery pack(12.6V) to power the Sabertooth **paralleled **with a Switch Mode dc-to-dc Power Supply that has a Max input voltage of 13.2 Volts.
What would be the voltage feeding back to the Lipo battery when in Regenerative mode be?
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The regenerative voltage of a motor controller like the RB-Dim-19 would be dependent on many factors such as how big are the attached motors, how much/fast you are breaking, and what kind of load is connected to the input power.
In the case of the Tri-Track and its standard parts, the regenerative voltage shouldn’t be much more than the battery voltage since the motors are small, the robot is small, and the li-po batteries would charge quickly (big electrical load) in addition to the “other 12 volt stuff” that would also consume the regenerative power quickly.
We have contacted the manufacturer to ask them if they can help quantify the voltage, but I think ultimately the only way to be sure is to verify the voltage experimentally using a voltmeter instead of the power supply that has the max input voltage of 13.2 volts.
Hope this helps and will let you know when we get a response,
FYI, we got a response from the manufacturer saying that they agree with our explanation, and would recommend testing experimentally also.
Thank you,
I just need to use a better SMPS, and get that 4% margin up to 25% plus…
What is the Thermal performance like for RB-Dfr-222 and RB-See-247 ?
The main chip in the RB-Dfr-222 has a rated typical efficiency of 90%, so the performance of the whole module should be about the same.
For the RB-See-247 module, it has a rated conversion efficiency of 96%.
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