How to Program New MP2884/6/8B Controllers
HTML-код
- Опубликовано: 15 сен 2024
- (Reupload because my video editing software decided to export the wrong version and I didn't notice...)
A quick video showing how to program a brand new MPS (Monolithic Power Systems) MP2884/6/8B using the EVKT-USBI2C-02 programmer. I ran into some issues while trying to program a new MP2884B for a 3080 FE I was working on, and figured I would post the solution.
This is assuming you already have the programmer, have saved the firmware from the previous chip (or have a known good version of the firmware for that chip for that card), and have it connected and ready to flash the new chip. You also need to power the 5v rail with an external power supply.
The problem seems obvious watching the video but I didn't know what needed to be done at the time. There is no manual that I could find for the program, so I had to figure it out on my own. I hope that someone else that runs into this same issue will find this video!
![Eminem - Fuel (Shady Edition) feat. Westside Boogie & GRIP [Official Audio]](http://i.ytimg.com/vi/k1OquBida9s/mqdefault.jpg)
Can You show how exactly have You connected wires to IC?
Yes that's my plan, but I didn't have a lot of time so I just threw this quick video together. Give me a little while here and I'll put up another video showing the full process, from connection to flashing!
If you just need to know about the wire connections, I stripped and attached two thinner wires to two of the cables that they included with the programmer. The third (ground) wire I stripped and left. If you look up the datasheet for the chip you can see which pin is scl and which pin is sda, those are the clock and data pins needed to communicate with the chip. Wire your two wires on those lines (in my case there were two resistors right there next to the chip so I wired to those), and then connect them up to the programmer, making sure you connect them respectively.
Then solder the other wire to ground, and plug that into the programmer as well. Power the card's 5v rail with a bench power supply (there are other ways to power up the chip but this is the easiest in my opinion), and plug the programmer in, hit scan on the software, and there you go!
Hello
What voltage did you use and what pin on IC to power it up?
Do you think if I connect scl, sda, gnd and power from bench power supply to IC directly I could connect it successfully?
Sorry for the late reply, I figured I would still respond in case anyone comes across this. You'd want to check the datasheet for the chip, that will tell you which pin needs to be powered and the voltage. For the MPS chips I believe you only need a 3.3v supply (it's been a bit since I've done this, haven't fixed anything the past few months). Yes, you can do scl, sda, gnd and power directly from the bench power supply. It's easiest to just put the IC on the card and then attach a wire for power, scl, sda
@WasatchElectronics
Hi
Thanks for reply.
I did like that. But the problem was IC that was delivered from Ali. It was already corrupted. So I used another chip and everything was fine. There should be some miliamps drawn by IC, and that is a sign of working IC.
Can You explain everything from the beginning showing us a tools connection etc?
Yes that's my plan, but I didn't have a lot of time so I just threw this quick video together. Give me a little while here and I'll put up another video showing the full process, from connection to flashing!
No way, I think I just burnt my laptop.
I changed the MPS2940A and didn't know that I had to rewrite the configuration so I booted the laptop so the laptop shutdown LED is off forever CPU is shorted and 2 DrMosfet output 19V.
I think the CPU is already dead
I don't know as much about laptops as I do about graphics cards, but - It might actually be fine. 19v sounds fine for a laptop, that's the voltage coming from the charger before it gets used by other converters or mosfets to power everything else. The processor is likely just a very low resistance, which is normal. On graphics cards for instance, the main power rail for the processor typically reads well under an ohm, probably .2-.5 depending on the card. Try programming that 2940A and see what happens.
@@WasatchElectronics 19V at the coils of cpu! should be max 1.2V
I dont have the device to program the QFN I dont thing its good idea to buy one if there is chance the cpu is dead
@@WasatchElectronics
@@MLS.22 Oh 19v at the coils of the CPU. Ouch, that thing is definitely dead now :(