Hi, I am building a custom board using DRV8301. I have build one last year and made it work. However, it suddenly broke. The 3.3 buck converter module is working but the FETs are not switching. My schematic is quite similar to the one in the datasheet but I am using 48-54V LiFePo4 as source and I have in parallel with the device 2 24V horn(2A max) in series. My 6 Fets have Qg (labeled as Total charge in tha datasheet) of 207nC max each. I am running at 8000Khz with 1Ohm gate series resistance. I am not sure if it is Qg or Qgs(48nC) that I will use in the Gate drive average load.
So I modified the board and quite having difficulty hand soldering the chip. I already wasted 2 because it was not aligned and it is hard to desolder. I was able to solder 1 successfully but not sure if it was overheated because I was using a hot air blowing 290-350 degrees Celcius. I have not tested it because I am waiting for my MCUs to arrive. But I want to know if the temperature was very high so that I can reorder the chips.
Where can I see the soldering profile for this chip?
↧
DRV8301 questions soldering temperature
↧