What is the exact type of MosFET is used for driving the Tello motors? The marking on the IC is "1C" and "W81" (s. photo)
One of them is dead on my Tello, after i´v replaced the motor, which was damaged by crash before.
Now i need to replace the IC, but i dont know, what exactly type i need.
Hey there MrSEG, great post. This information is what I've been looking for myself. I have yet to pull my tello apart and inspect the electronics. I have some questions that would really appreciate if you know the answers?
Are there four mosfets? Are they all nchan and on the drain side of the motor? You have confirmed what pads are the gate pads?
Would you know the drive voltage on the gate pin of the mosfets?
Also, I'm interested in trying out different mosfets that have a lower Rds(on) value. As long as they are pin-for-pin compatible and the Vgs values work for the drive voltage provided maybe other mosfets could work?
There is another mosfet from the same vendor: PMPB10XNE it has an Rds(on) of 12mOhm. Only a coupe of Ohms lower than the PMPB11EN but it might make a difference to runtime and slightly increased torque?
Hi MrSEG. I have same problem ic name 1c w7. Can u help me for samiliar ic . ThanksI've (re)soldered it with hot air. It works well. And not so difficult. Because the mosfets are placed on the edge of pcb and are good accessible by pincette.
For removing of PCB i only desoldered the motors wires. And disconnected the cam connector.
The plug of CAM is additionally attached with silicone. That's why you should be careful here when disconnecting.
I left both antennas connected to pcb. The wires are long enough to be able to get pcb out of tello body.
I also left the antennas in the case. So that the housing of tello hangs on antenna cable on pcd during soldering. On the other side of PCB you only need to remove the cover sticker to get access to mosfets. So that is it.