Look at backlight / LCD driver ICs (TI certainly do a bundle). They are generally designed to produce multiple voltage rails at weird voltages configured via resistors (I forget which one is used on the Pi display but I do recall it produces about 4 output rails).Thank you for your answer, 6to9!
Well, yeah I know it's pretty complicated for my level but thats how we are learning, isn't it?
So I've kept in mind your noting of dc-dc converter and found one looking fit to decrease 3.3V to 1.8V and included it in scheme. Nonetheless i've met difficulties with dc-dc booster for AVDD and AVEE and for VLED. I found two units that could match but i have doubts.
For AVDD/EE it appears hard to meet exact +/-5.8V, most boosters provides only 5V output accurate, is it me trying not hard enough or it's really uncommon output requirement?
What's about VLED, according to your words i should connect straight to the PSU but since I've started minding this project I think of using UPS HAT more and more, then VLED should be connected to UPS, but how could I get 24.8V there? Use dc buster too?
You hadn't posted the full datasheet before, and I hadn't found one with a quick web search.What's about timings, it is descripted in datasheet, and power on/off sequence too, so I could use it to adapt existing drivers for boe panels, or am i wrong?And even if you've connected that lot up, then you have none of the timing or other DSI level configuration for the display (DSI panels normally take an initialisation sequence of many DSI command writes). Without all those settings you'll get a lovely image of a black cat on a dark night.
Yes you appear to have the required video timings there. If it doesn't require DSI initialisation commands then you may well find you have everything then.
Statistics: Posted by 6by9 — Sat Jun 29, 2024 2:04 pm