I like designing and building motors. I haven't had an ebike since 2012, cromotor v2 days. 8kW. Then I went to the MB-5 30kW build and became scared of that. Life is short though, right? now it's time for dual bac 8000.
I like the idea of a safer version of Luke's deathbike. A small production...
Will I still be able to run at 20kHz to make the motors nearly silent? Seems like onewheel only manages 18kHz. Still prettty high, but I wonder if they chose that because of switching losses
Why am I drawn to the GaN.. why do I want the GaN...
WHat about these babies?
https://epc-co.com/epc/Portals/0/epc/documents/datasheets/EPC2066_datasheet.pdf
I'm pretty sold on these. 33nC? wouldn't that allow me to run like 10 of these in parallel with standard drivers? Also logic level.
I'm not sure those are available in high volume, I rather use some dc dc chip and put it all on one pcb with the inverter.
I'm not sure going from 5 to 12V is worth that 30% reduction in on resistance. For the space of the extra components for 12V I might be able to afford to double my 20V...
I've already done it crudely, don't really want to prove out nothing with a sub par controller. I really don't mind taking the time to do it properly, even if it takes a few spins to get it working. I also would like to try to over build the controller to be able to handle higher current like...
Would I be better off with the single channel or the quad channel? I kind of want to integrate a low side short circuit protection switch (and to act as solid state power switch for powering on the device) into the inverter. Maybe I could use 3 of the channels for the phases and 1 for the...
I don't know if mp2 is the right fit. I rather get even more compact and have assembly house put the fets on. Are direct fets going to be around for a long time?
haven't built the motor yet. I built a 7S version before. I don't really want to do a proof of concept ESC, I already did that once crudely. I want to build something reliable that will fit within a 12mm enclosure ideally and be eventually saleable.
MOSFETs x gate charge per mos x switches...
Right but how many would I need? Each is 500mA at 12V at 2.5V input voltage. I'm not sure what I need to drive say a 12 FET version using the above toshiba part. Also worth noting the polulu part you linked needs 2.7V to start up, which may or may not be an issue with LFP cells. I can set the...
You oughta know if you're designing battery packs. I'm going to step it down to charge my 1S battery at 50A.
Don't you love everything about the way technology is progressing? Can you imagine it getting better?
See this new toshiba part.
I'm curious if it will be fine in a 6 fet configuration. It is only 0.3mOhm. 60A going through two fets (0.6mOhm in series) that's not even 3W continous i^2*r loss at the fet. Burst up to 150-200A that becomes 13.5-24W. No? I only really need to burst to 100A, but...