Gaming Looking for a circuit diagram/pcb file of the DSi

[Nercer]

I want to put a USB-C port on my DSi, so I wanna know if there´s a circuit diagram or pcb file of the DSi so I can find a proper way to get the 5V of the USB down to the 4.6V of the DSi.

I thought of something like this:

Using a 4.7V Zener diode (should be close enough to 4.6V) to limit the voltage and a resistor to limit the current.
A circuit diagram would really help me out, since I dont knpw how the DSi handles power internally.

Update: Apparently my powerbank outputs 5.3V and the DSi can handle it without problems. So i just replaced the old Port with USB-C and it works.
About the old charger, it´s dead, 3.5V without load.

 

[FAST6191]

Most would probably say straight USB is within tolerance, and we have had USB chargers since the GBA days but also for the DSi that were straight through cables.

Why do you need a diagram for this though if you are already planning to match input voltage and solder a crude regulator together? You can pin out a supply and the internal pins in seconds if you wanted to.

 

[Nercer]

Most would probably say straight USB is within tolerance, and we have had USB chargers since the GBA days but also for the DSi that were straight through cables.

Why do you need a diagram for this though if you are already planning to match input voltage and solder a crude regulator together? You can pin out a supply and the internal pins in seconds if you wanted to.

I want to see if the DSi has some way limiting the voltage by itself that i could modify so could get rid of the diode and my DSi XL (different console) wont charge with an after market 5V charger, so im critical of the 5V being ok.

 

[FAST6191]

Mains charger or USB charger? Because many third party custom mains charging efforts of that time were awful (pick any electronics channel or website you like and they will pull them apart as a matter of course)

 

[Nercer]

Mains charger or USB charger? Because many third party custom mains charging efforts of that time were awful (pick any electronics channel or website you like and they will pull them apart as a matter of course)

Mains, its cheap third party one. Probably just a regular phone charger with the wire/connector swapped out. I´ll test the circuit on a breadborad tomorrow and report back.

 

[GooseWerks]

I've used micro USB connectors on the DS and DSLite without issue to charge. The board on those has a step down, I can't imagine the DSi doesn't have one with all the aftermarket chargers being off spec.

 

[PityOnU]

You'll have to take the board out and do some probing (heh) yourself. Please post the answer here if you do.

As other above have stated, though, all the Nintendo consoles from the DS onwards do seem to have some internal voltage regulators, so you can probably just solder a USB-C connector to the location the charging port used to be, give it 5V, and it'll work fine.