Alright, I reached out to NeutronRC to get some more info.
They actually had a tech answer me, rather than blowing me off like a number of other companies have done. For that alone, they get points from me, and I am much more likely to buy something from them.
My conversation with NeutronRC is below. The main take aways for the 35A AIO are:
The esc's are rated for 35A constant.
Peak/Burst rating is 45A for 5 seconds.
They did do testing, and their 21xx and smaller motor and prop size are just suggestions to keep you from destroying a mosfet.
They told me what mosfet they use, it is:
Toshiba TPN2R203NC
https://www.mouser.hk/datasheet/2/408/TP...rCMYjL1_qQ Me: Someone I know bought the 35A aio to try out. It states that it’s only suitable for 21xx and smaller motors, and only 3.5” to 4” props.
As long as the total amp draw per motor is under 35A, I don’t understand why there are size restrictions?
Do you have any test data on your ESCs that you can share with me?
NeutronRC: Yes, we have comprehensive data tests for hardware design, MOS performance, parameters, PCB design thermal power consumption, and the reverse voltage generated by the motor when it is working and braking, and the IDm of the MOS. , safe and reliable configuration recommendations.
How to install the 2207.2306 motor in the 35A version, it may have no problem when it starts to work, normal level flight shooting is no problem, when you do a quick U-turn, or 100% throttle steering, the MOS may burn out, causing the plane to fall
In terms of hardware design, we will take 1/3 of the mos data as the benchmark, stable and reliable working current.
Me: Thank you.
Can you please send me those data tests?
Can you also please tell me what the peak/burst current rating is on the 35A aio, and how long it can handle that for?
I have a number of people reach out to me for recommendations on the intofpv.com multirotor forum, and I can’t recommend your electronics without knowing exactly when and how they will fail.
NeutronRC: https://www.mouser.hk/datasheet/2/408/TP...915945.pdf ID 100A, according to the industrial application, the value is 35A, which is the reason for using this MOS to mark the parameter 35A. At the same time, its ID is 45A at 25 degrees, so the peak value is 45A. It is customary to follow our standard flight action, and the sudden current is full throttle. Generally, the calculation does not exceed 5 seconds, so his ID MAX burst current definition is 45A for 5 seconds. Idp anti-shock current 200A, in fact, it is very small in FPV use, relatively conservative, it is easy to reach this peak value when the motor brakes, this is the fundamental reason why I limit the 2205 motor, if you use 2207 or 2306 and a larger motor, Fortunately, light braking will not exceed this current, but considering extreme conditions, such as rapid braking to avoid obstacles, at this time, the braking reverse voltage and sink current of the motor will be far greater than 200A, which will cause MOS damage. Based on the above points and the characteristics of the actual motor, a reasonable suggestion is given. The detailed flight data test is more based on a large number of empirical tests that we actually installed on the frame. I think the actual experience is more important than the pure theoretical data. Although the MOS parameters retain a certain amount of redundancy, we still need to retain a reasonable amount of redundancy to achieve reliability and stability while ensuring the reliability of the user framework. So there needs to be a certain limit.
Me: Thank you, I appreciate the answer and information.
I’ll be ordering one and posting my experience with it.
I really appreciate you actually giving me a proper answer.
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For those of you that don't regularly reach out to manufacturers to try to get information, this level of detail is rare. The only other manufacturers who have been willing to interact with me on this level are Foxeer and DarwinFPV. I've reached out to just about every other major manufacturer while trying to repair boards, and I typically just get blown off or stuck in a loop of misinterpreted language translations.
Most manufacturers won't even tell you what mosfet they used, much less how they calculated the esc rating.
Dangerous operations.
Disclaimer: I don’t know wtf I’m talking about.
I wish I could get the smell of burnt electronics out of my nose.