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 Home » Repair PC's components » Laptop: circuit create 3v3 and 5v power supply
Laptop: circuit create 3v3 and 5v power supply    
This is the source circuit "classic" skeptical that we will meet all mAh power source in the laptop as RAM, CPU Vcore Power, power chipset, VGA chip resources ... 

For 3v3 branch identical to the branch should lqv77 I 5v drawing a branch represents the second 5v 3v3 and 5v source.
 See also post: click the source circuit and all circuits open source and source ABAT charge before reading this article.

As described in " source circuit size , "IC 5v 3v3 will get power from the circuit ADBAT ADBAT open source and free levels to generate a 5V AL 3v3 circuit low voltage to the pin into the source of the SIO chip.
Chip SIO will be ordered to EN3 and EN5 IC 5v 3v3 works for the 3v3 and 5v two sources. This pattern is commonly found in laptops today. Another form, power supply 5v AL created for the second straight leg EN3 and EN5 to manually open source and free to run this IC 5v 3v3, 3v3 and then get resources for SIO (used as DV6000 user Max8724).
Often the two sources would have before, but a few high-end models, even two sources only after I click the power button. But mostly, it is still the "first level". When 3v3 and 5v power generated, the signal was OK PWRGD will be reported back to the SIO chip or chip Nam.

Category: Repair PC's components | Views: 935 |


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