robespierre wrote:Hi, the connector on the P/S is a Molex Mini-Fit BMI (Blind Mating System) 15-06-0241.
I am not sure that ATX PSU will work, this is a special supply with active PFC and not-standard voltages.
The pinout is (facing the power supply):
[ ?? ] [ ?? ] [3.3sb] [+ 12] [- 12] [Gnd] [Gnd] [Gnd] [Gnd] [3.43] [3.43] [3.43]
[ ?? ] [!POn] [5.10] [5.10] [Gnd] [Gnd] [Gnd] [Gnd] [Gnd] [3.43] [3.43] [3.43]
One of the ?? is the pwrgood signal, I am not sure which. probably the left one on the lower row. The other two ?? may be returns or some other function.
All at your own risk.
i got it, it means standby but on ATX its at +5V hmmmgeo wrote:PIN 15: [3.3sb], what do you mean by sb? is this the one for sense stated on ATX?
thanks kuba! yes i know but my intention is not to use ATX, i'm planning to build my own PSU for my O2 laptop project, so need to know which pins are PSU output and which are not. my tentative game plan is to buy an existing DC adapter like 24V maybe then 32A capable, from there will chop it to the specific voltages that the O2 board needs this is possible ayt? progress a bit slow coz too many pins to decipher one by one hehe my eyes sometimes rolls outside hehekubatyszko wrote:This could easily be regulated using LDO VOM, there are a few models which could take 5 and produce 3v3.
aha! so it really means 1 pin only can source 5.17A, NOT 31A right? thanks for this confirmation!guardian452 wrote:The power supply can put out that current total across all pins, if you check the continuity they are most likely wired to the same source and shorted together. If one pin tries to draw full current it will probably melt the connector; each pin is designed to handle approximately 5A so they work in parallel.
ah ok2 noted, thanks!guardian452 wrote:It is also possible for a low-power supply and high-power supply for the same voltage. I.e. 12V at 2A and 12V at 10A in the same supply, but connected to different things. This is how it works if the same voltage appears twice on the label.
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