HuntKey CP-350By susu, 21/03/2010 HuntKeymt gng mt khng phi l mi i vi th trng CNTT Vit Nam. Cht lng ca cc sn phm PSU ca n tuy nhin vn l mt du chm hi ln cho ngi dng, trn cc din n phn cng c uy tnh khi nhc ti Huntkey th lun lun n ra cc trn bt chin ln ko di khng hi kt gia cc fan hm m Huntkey v cc i th ca n lm cho ngi dng mi nh b lc vo m hn trn khng li thot. Chnh ti cng l nn nhn vi bi vit nh gi cht lng 22 PSU trong c Huntkey cch y 3 nmv hu qu cho ti nay vn cha c gii quyt dt im, vi mt l do duy nht sn phm PSU lc c cho l hng gi, hng nhi Huntkey nn khng c cng nhn. Hm nay trong iu kin cho php vi mu sn phm Huntkey CP-350 do Cng Ty Anh Ngc (mt trong cc nh phn phi chnh thc HuntKey ti Vit Nam) dn tem chng nhn chnh hng, ti li mt ln na c iu kin th nghim cht lng tht s ca thng hiu ny.

B ngoi v cc tnh nngc HuntKey xp vo loi PSU ph thng nn v hnh thc CP-350 khng c g c bit so vi cc Psu thng hiu khc thuc dng ny. Vn l v kim loi xi mu xm trng rt ph thng, im khc bit m ti cm nhn c l lp kim loi ny kh dy nn cm HuntKey CP-350 rt chc tay v nng hn cc sn phm noname. Pha sau nm cnh qut lm mt chnh l ly in ngun AC, mt tem thng tin ngun in vo tng thch duy nht l AC 230V c dn chng ln v tr trc y l cng tc chn in p li ph hp, vic ny gip PSU an ton hn trc con mt t m v tay ty my ca ngi dng, hn ch ti a vic gt nhm mc in p vo l h hng PSU mt cch khng cn thit. Pha trc, HuntKey m rng ton b phn din tch ca v kim loi ra cho khng kh mt trn vo thng qua cc l li bo v hnh t ong. Mt thit k hp l lm gim nh gnh nng cho qut lm mt ch c kch thc 80mm pha sau PSU. Gi y khng ch phn phin tn nhit cho cc linh kin c hng lung gi trong lnh m c cc thnh phn to nhiu nhit khc nh cc bin p, cun dy,u c chia phn.

Kh khim tn trong mc cng sut 350W danh nh, HuntKey CP-350 cung cp cho ngi dng mt s u cp ngun hp l, n c th kt ni ti 7 thit b trong h tr cho 2 thit b dng giao tip SATA. u cp ngun chnh cho mainboard c dng loi 20+4 pin linh hot p ng c cc socket ngun mainboard 20 ln 24 pin, nhng vi chn ngun cho CPU th c v HuntKey hi keo kit khi ch trang b duy nht 1 u ATX12V 4 pin.

y l PSU thit k Single Rail nn b ngun ch cung cp duy nht mt ng +12VDC cho ton b cc u cm c ng +12VDC ny.

Chiu di cp kh khim tn, cha th hin s ho phng v ng cp khi chiu di ti a cho u ngun chnh 20+4 pin vn mc 34 cm. Cp vn trn ch khng c bc li lm gim mt cht thm m v mt cht an ton cho cc b cp ny,ti ang lan man i sai nh hng ban u ca HuntKey?!, y l dng PSU gi r nn cng khng nn kh khn i hi nhiu lm g cho cc tin ch khng thit thc ch lm cho gi thnh sn phm tng cao.

Thng tin ghi trn nhn rt r rnh, th hin ng cht ca mt PSU c cng sut tht. c thit k v sn xut trn phin bn 2.3 mi nht ca chun ATX12V, HuntKey CP-350 p ng c nhu cu v nng lng cho cc cu hnh my tnh i mi vi mc cng sut ng +12VDC c th ln ti 228W (19A). Tng cng sut 2 ng cn li cng rt hp l khi gii hn ng mc 130W. Ring ng ngun cp trc +5VSB li th hin mt sc mnh him thy khi c th cung cp mt ngun nng lng ti 2.5A, mc ny so vi cc PSU c cng mc cng sut tng danh nh l 350W th l mt con s ng khen, n s gip cho bn t tin hn khi gn nhiu thit b khi ng qua PCI hay USB cn s dng ngun ny.

Th nghim1/ An ton in

2/ Cng sut, Hiu sut v h s cng sut PF

iu kin th nghim c thit lp trong mi trng nhit phng trung bnh 30C. Mc cng sut thit lp cho 2 ng +3.3VDC v +5VDC theo chun ATX12V l 103W.

Kt qu t c khng nh mong munPSU HuntKey CP-350 ch hot ng ti mc cng sut 280W. Khi ti nng mc th ln ti mc cng sut danh nh l 350W th PSU cht nhanh ti ni ti khng kp ghi li cc gi tr in p. Do khng c mch iu chnh h s cng sut PFC nn gi tr PF ca PSU HuntKey CP-350 ch mc t 0.55 ti 0.63 lm cho cng sut biu kin (AV) c gi tr cao gn gp i cng sut tiu th thc (W), iu ny cn c ch khi bn mun mua b lu in UPS xi chung vi my tnh c trang b PSU ny, cng sut ca UPS cn chn l trn 600VA nu bn mun c thi gian lu in lu. Hiu sut ca HuntKey CP-350 t c rt tt lun trn mc 75% (tiu chun ATX l >70%), do vy n cng c xem nh mt PSU tit kim in.

3/ S n nh in p

in p rt chun ti mc cng sut cao nht l 280W, sai s ln nht l 0.7%. Mc dao ng in p cng vy, dao ng ln nht ri vo ng +5VSB nhng gi tr cng ch trong khong 0.1V, cc ng cn li dao ng khng ng k. Cho thy thit k mch n p ca PSU ny rt tt. Tuy nhin, vn nh rt n do HuntKey cha quan tm ti cht lng in p ca ng -12V v th ni n tri ln ti mc sai s 12.6% vt qua gii hn cho php 10%.

4/ Ch bo v

Ch bo v rt tt cho cc tnh nng bo v qu p OVP v bo v chm ti SCP. Ch bo v qu dng cha th hin ng ng cp thng hiu, khng cu c PSU trong trng hp qu ti.

5/ Nhit hot ng

iu u tin thy c l HuntKey CP-350 khng c ch iu chnh tc qut lm mt theo nhit hot ng, gi tr tc o c n nh t mc cng sut thp nht cho ti mc cao nht, y cng c th l nguyn nhn gy ci cht cho PSU ny khi cha gii quyt c bi ton nhit tng cao khi tng cng sut. Trn kt qu o nhit cho thy r iu ny, mc cng sut 178W nhit chnh lch ch mc 9.4C nhng khi ln mc 280W nhit tng vt mt cch khng khip l 19.5oC.

Khm ph bn trong

Qut YATE LOON c cht lng tt, hu nh sau ny tt c cc hng ln u ang chuyn qua s dng thng hiu ny. Qut model D8SL-12 c c tnh ni bt l n thp ch tm 26dB trn tc quay ti a 2000RPM. H thng tn nhit nu ch ni v qut khng l cha , cc phin nhm tn nhit cng gp phn khng nh cho vic lm mt cc linh kin cng sut gn trn n, trong thit k phin tn nhit ca HuntKey cho thy c s u t nghim tc, v tr tn nhit c t trn lung lu thong khng kh, phn trn c nh hnh bng cc l nhm hnh rng lc tng ti a din tch tip xc vi khng kh.

Mch chng nhiu in t c nhng c thit k kh n gin.

Mch nn in chnh gm c diode T4KB80 c dng nn in ti a l 4A@800V v cp t lc ngun 470uF/200VDC cho tng dung lng lc DC cho PSU l 235uF/400VDC. B ngun ny vn c th

hot ng c vi mc in p 110VAC, trn mch vn cn thy 2 dy in (mu ) ni ra cng tc chn in p vo pha sau, tuy cng tc ny hin ang ang b tem che i nhng khi c nhu cu s dng vi mc in p 110VAC th bn c th lt b tem v chuyn n qua v tr thch hp.

Xt v mt cng ngh iu khin PWM th HuntKey vn cha c s thay i quan im cho cc PSU ph thng ca mnh. Trong CP-350 vn s dng phng thc d sai trc tip v iu khin PWM cch ly qua bin p kch trung gian. Nhng ti thy HuntKey c s ci tin gip gim i cc khuyt im ca dng mch cng sut PWM ny bng vic s dng IC ring l SG6105DZ ca System General (Taiwan) thay cho cp IC thng dng TL494 v LM339. Da trn cc c tnh k thut ni bt ca IC ny cho thy n l mt IC c tch hp cao, t dng cc thnh phn linh kin ri bn ngoi. Ngoi ra tnh nng bo v cn c nng cao nh OVP, UVP cho 3 ng in chnh, khng nhng vy tnh bo v UVP cn c p dng cho c ng -12V v -5V. Tnh nng bo v OPP v SCP cng c qung co l c trong IC ny nhng n tht s tht bi trong cuc th nghim hm nay khi khng cu c CP-350 mc 350W. Ngoi im yu th IC SG6105DZ vi thit k ca HuntKey rt n tng trong vic gi n nh gi tr in p ra trong cc mc cng sut th nghim tr ng -12V th rt t, hy vng cc mainboard i mi khng cn s dng ng -12V, khng th tht nguy cho n. Mch PWM cho ngun +5VSB th ng l kh tin tin khng s dng linh kin ri m dng lun mt con IC c tch hp cng sut MOSFET bn trong c cng sut ln ti 22W l P1014AP ca ON Semiconductor.

Hot ng nng n nht l cp Transistor J13009 ca Fairchild Semiconductor, so vi cc transistor J13007 thng s dng trn ngun noname th J13009 u th hn khi c dng chu ng ln ti 12A trong khi J13007 ch l 8A. Kh nng cung cp cng sut ti mc an ton no cn c th hin qua cc diode nn in sau bin p PWM trn cc ng in chnh. Mc dng ti ln nht ca cc ng l 20A@12V (STPS20H100CT), 30A@5V (S30D40C) v 20A@3.3V (STPS2045CT), nu so vi dng in danh nh ti a c th hin trn nhn ghi cng sut th cc diode ny u ang hot ng trong mc an ton, ch ring ng +12VDC th phn trm an ton kh nh khi danh nh l 19A m diode ch chu c 20A.

Cht lng lp rp c quan tm ng mc, cc cun dy lc DC tuy c qun trn cc chn vng chc nhng chng u c c nh chc chn vo cc linh kin chung quanh bng keo cch in, to thnh khi vng chc chng c cc rung ng, trnh hin tng bung mi hn trong qu trnh vn chuyn v s dng. Cc u cp gn vo mch in cng th, chng u c bm thnh b

vi nhau bng cc kp kim loi, khng nhng bm chc vo mch in nh thit hn m khng th bung ra c l nh cc ca bung ra xung quanh chn kp kim loi ny pha di mch in.

Ti khng tm thy bt c thng tin chng minh l HuntKey CP-350 thn thin vi mi trng qua chng nhn RoHS, nhng bn thy , mch in pha di rt sch, hon ton khng thy c du hiu ca ho cht ty mch nh cc PSU km pht trin khc. Xin li, nu bn thy y c qu nhiu l trng th l do ti to ra khi ht cc linh kin ra ngoi chp hnh m qun gn vo.

nh gi chungVi mc gi 360,000 ng v mc cng sut 280W th HuntKey CP-350 cha phi l mt PSU c mc u t thp nht. Nu so vi chnh HuntKey, thng qua kt qu th nghim mu LW6350 trc y th CP-350 c mc cng sut tht kh quan hn so vi mc 213W m LW6350 t c, ng thi cht lng linh kin v cng ngh tt hn rt nhiu. Nu HuntKey c gng hn mt cht, chm cht hn mt cht (hay gim bt li nhun i mt t) cho CP-350 th n s d dng t c mc 350W, trong tng lai HuntKey s l mt i th ng gm trong cc thng hiu PSU cng sut tht ti Vit Nam ti hy vng s thy c sm kt qu d on ny. Ngoi v cng sut ra khng ng danh nh v in p ng -12VDC c sai s vc gi tr cho php thti khng thy iu g ng ch PSU ny. Khi nhu cu h thng ca bn ch di mc 250W (ti cho l mc an ton) th vic mua cho mnh mt PSU nh HuntKey CP-350 l ng ng tin bi cht lng linh kin, lp rp tiu chun v s n nh in p ti u, cng nh cc gi tr gia tng khc lm bn thoi mi hn nh hiu sut tt trn 75%, chng nhiu in t y ,

u im- Cht lng linh kin v thit k tt. - C mch lc EMI. - Hin sut trn 75%. - in p trn cc ng +12VDC, +5VDC v +3.3VDC c sai s rt thp v dao ng khng ng k. Khuyt im - Khng t cng sut danh nh, cng sut ti a c th s dng c l 280W. - Khng c mch PFC, h s PF thp di 0.65.

- Khng c mch smart fan (iu chnh qut theo nhit ) - Mch bo v OPP hot ng khng hiu qu. - in p trn ng -12VDC c sai s cao hn tiu chun.

Gi bn tham kho- 360,000 ng, bo hnh 2 nm.

Gi tr u t- 1,280 ng/1 Watt. http://powerlab.vn/2010/03/huntkey-cp-350/4/