ESpec - мир электроники для профессионалов


Qnap ts-119p ii nas- soic marking code identification

  Список форумов » Даташиты

Следующая тема · Предыдущая тема
АвторСообщение
Excita 
Заглянувший
Сообщения: 5
 
Сообщение #1 от 30/10/2014 02:58 цитата  

Sorry, Im not Russian so I try it in English.
I have a broken qnap ya-119p ii nas with a damaged 8-pin dc-dc converter I guess.
The marking is ABP0NB or ABPONB. Someone knows what this is???

Regards




roges 
Передовик
Сообщения: 1197
 
Сообщение #2 от 30/10/2014 16:30 цитата  

Excita, shall describe the alleged pinout
Excita 
Заглянувший
Сообщения: 5
 
Сообщение #3 от 31/10/2014 15:10 цитата  

Hi,
I tryed to Write Out The schematic diagram.
Seems to be as followed:
roges 
Передовик
Сообщения: 1197
 
Сообщение #4 от 31/10/2014 17:06 цитата  

Hi!
Did you make a mistake, and the scheme looks like this ...!?



See 3A, 12V, Synchronous-Rectified Buck Converter -
with similar pin connections.
--------------------------------------------
AOZ1010
AOZ1021
APW7142
Excita 
Заглянувший
Сообщения: 5
 
Сообщение #5 от 31/10/2014 22:58 цитата  

Yes, capacitor in parallel with resistor connects to outlet.
The Single cap is correct, between pin 5 and pin 7.
Curious you cant identify The device via The marking code.
Maybe i have to try on of The examples youve named.
Best Regards
roges 
Передовик
Сообщения: 1197
 
Сообщение #6 от 01/11/2014 22:40 цитата  

Excita,
Judging because the board is present, Step Down Regulator -SY8009B,
we can assume that the element with the code "ABP0NB" too, belongs Silergy Corp.
Especially because they practice six figure encoding Package SO-8.
However, this is only a guess, because the manufacturer is stingy on the documentation. недовольство, огорчение
Therefore, in the theme options have been proposed functional analogs with similar pin connections.
roges писал:
AOZ1010
AOZ1021
APW7142


It remains to determine the output voltage of the regulator.
To do this, you need to know the resistor values ​​in the circuit FB, though, and so it is clear that it should not exceed the maximum input voltage for SY8009B - 5,5V
Excita 
Заглянувший
Сообщения: 5
 
Сообщение #7 от 02/11/2014 14:46 цитата  

Hi Roges,

thanks for your help.
R1 reads 100.1kOhm
R2 reads 22.1kOhm

Related to the Datasheets, the output voltage should be ~4,45V.
I tryed 3,3V to the output of the Buck and the NAS seems to boot, (LEDs and fan working).
I didnt tryed 4,45V, because for me i never heard of such a voltage in PC related stuff.

Sadly I cant get the SY8142 / SY8143 datasheet or the pinout.

Best regards
roges 
Передовик
Сообщения: 1197
 
Сообщение #8 от 02/11/2014 20:20 цитата  

Hi Excita !
Excita писал:
I didnt tryed 4,45V, because for me i never heard of such a voltage in PC related stuff.

This should not confuse you. Resistive divider circuit FB, you can select any output voltage of the regulator.
In this case, it is necessary to proceed from an average value of the input voltage SY8009B, which will be 4,25V (+/- 5%)
Excita писал:
Sadly I cant get the SY8142 / SY8143 datasheet or the pinout

Unfortunately, only that there offsayte.
Excita 
Заглянувший
Сообщения: 5
 
Сообщение #9 от 02/11/2014 22:05 цитата  

Well, okay.
I ordered aoz1021 today, should arrive on Thusday.
Hope I can get it back to work.

Перейти: 
Следующая тема · Предыдущая тема
Показать/скрыть Ваши права в разделе

Интересное от ESpec


Другие темы раздела Даташиты



Rambler's Top100 Рейтинг@Mail.ru liveinternet.ru RadioTOP