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Old 16-10-2016, 15:52   #1
nachtfalke
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Default Lightning - Dual Output POWERCARD

nu aveam ce face asa ca m-am apucat si am decupat un gtx 480 lightning , l-am transformat intr-un dual output powercard!


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@[Wanted] Este foarte clar ca fps-urile tale (1525) nu sunt rezultatul unei frecvente de 1170mhz, ci undeva in jurul a 800 mhz.

Last edited by nachtfalke; 16-10-2016 at 16:01.
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Old 17-10-2016, 08:22   #2
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O mica bijuterie, frumos.

Ai avut in sfarsit si 480 light ==))
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Old 17-10-2016, 14:06   #3
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Sexy!
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Dacii, cand se uneau, erau de neinvins...
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Old 17-10-2016, 21:20   #4
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placa avea gpu-ul in scurt( rezistenta ohmica a gpu-ului prea mica) , am cumparat-o defecta cu ideea de a decupa vrm-ul.

vorbim de un etaj de alimentare in 15 stagii ( 12gpu +3 ddr)

main pwm este uP6225AM care poate gestiona 6 canale insa MSI le-a dublat prin intermediul a 6 drivere uP6282AD ..si deci practic vorbim de un VRM in 12 faze!
fiecare stagie are cate 2 mosfeti IR6725 + IR6723 DirectFet Package!

la DDR msi a implementat pwm-ul uP6207AI care poate controla 3 stagii , fiecare stagie are 2 mosfeti IR6725+ IR6721 DirectFet Package!

filtrul pe iesire este plin de tantal cap si proadlizer Chemicon ( 3 pentru gpu , 1 pentru DDR)

nu a fost chiar simplu sa "mint" pwm-urile , mai ales etajele POR ( power on reset)din pwm-uri , prin decupare lipsesc semnalele trimise de gpu si slotul pci catre pwm , pentru a iesi din sleep, trebuiesc restabilite manual .
am configurat 2 LDO-uri ( +5VCC / +3.3VCC)

ce mi-a dat chiar bataie de cap a fost power input for load , imi activa numai o faza , iar pwm-ul DDR il trimitea la sleep , insa l-am facut

astept sa ajunga DIP switch-urile , dupa care o sa configurez VID la pwm ..ca sa trec peste protectiile OCP/OVP.
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@[Wanted] Este foarte clar ca fps-urile tale (1525) nu sunt rezultatul unei frecvente de 1170mhz, ci undeva in jurul a 800 mhz.
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Old 23-10-2016, 11:26   #5
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astazi am configurat VID la pwm , asa ca avem control la output voltage , dar am si trecut peste protectiile OCP/OVP/UVP ...

pozitia 1 add +0.1v
pozitia 2 add +0.2v
pozitia 3 add +0.4v

se pot folosi si in combinatie de cate 2 sau toate 3 pentru voltajul dorit!

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@[Wanted] Este foarte clar ca fps-urile tale (1525) nu sunt rezultatul unei frecvente de 1170mhz, ci undeva in jurul a 800 mhz.
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Old 30-10-2016, 19:12   #6
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powercard-ul este gata si perfect functional , l-am montat deja pe HD7970 reference design!







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@[Wanted] Este foarte clar ca fps-urile tale (1525) nu sunt rezultatul unei frecvente de 1170mhz, ci undeva in jurul a 800 mhz.
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Old 30-10-2016, 21:03   #7
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E puternic, da ceva vantage si 2011.
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Old 31-10-2016, 07:30   #8
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da , este cu adevarat un VRM puternic poate livra ~400A +VCC(gpu) si ~100A gDDR

este echivalent lui epower card ( 14faze up to 400A), dar faptul ca este un dual output powercard ..este mai practic

asus powercard poate livra up to 500A ..
Output voltage setting/monitoring
Output voltage offset switches (+0.4V, +0.3V, +0.2V, +0.1V)
Safety switch (limits output voltage to maximum 1.4V)
Output current monitoring
VRM temperature monitoring
Load-line calibration (0%, 60%, 80%, 100%)
Hotwire setting/monitoring

si multe altele il face sa fie cel mai bun external vrm existent!

bench probabil dupa sapt ce vine , am o cascada in lucru si dupa ce termin acest proiect o sa fie timp si de bench
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@[Wanted] Este foarte clar ca fps-urile tale (1525) nu sunt rezultatul unei frecvente de 1170mhz, ci undeva in jurul a 800 mhz.

Last edited by nachtfalke; 31-10-2016 at 07:33.
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