謝謝你的無(wú)私奉獻(xiàn)!
有兩個(gè)問(wèn)題請(qǐng)教DX,
1: 能源之星2.0對(duì)待機(jī)功耗的規(guī)定是在何種電壓下測(cè)量?(若只測(cè)~115V那很容易,若要~230V也滿足就有難度).
2: 能源之星2.0只對(duì)輸入功率>=100W的電源要求功率因數(shù)必須>0.9,只在115V 60Hz下測(cè)量.230V 50Hz不測(cè).然而照明行業(yè)歐洲人要求輸入功率>25W的LED電源PF>0.9,還要求偕波必須符合EN61000-3-2 CLASS C,那做LED電源怎么過(guò)能源之星2.0??? 難道做個(gè)能源之星2.0只賣到美國(guó)加拿大?

高功率因數(shù)的LED電源待機(jī)功耗能做到<0.3W(~230V)真有難度!
就連Philips 2008年10月剛發(fā)布的UBA3070也只能達(dá)到待機(jī)功耗<=0.5W的水平.
當(dāng)然Philips也有小功率的驅(qū)動(dòng)IC也可滿足<=0.3W,可做20W~50W的就難了.
能否幫忙確定一下,能源之星2.0對(duì)0~50W待機(jī)功耗的測(cè)試電壓!

謝謝!

現(xiàn)就樓上的問(wèn)題,簡(jiǎn)單回復(fù)如下,供參考:

1. 以能源之星規(guī)定, 產(chǎn)品規(guī)格只使用在 115 V, 則只測(cè) 115V輸入, 若115V/230V兩者都可使用, 則兩者都要符合.

2.  IEC61000-3-2 的 class C並沒(méi)有要求對(duì) >25W 需要 PF > 0.9, 其要求諧波限制如下表. (可用Chroma 66202+softpanel
來(lái)驗(yàn)證). 請(qǐng)問(wèn)你說(shuō)LED驅(qū)動(dòng)器要 PF>0.9, 是依照哪個(gè)法規(guī) ?


但其實(shí)Steven_Liu 先生不用馬上下結(jié)論,  能源之星EPS 2.0是指adaptor, 是否有包括LED驅(qū)動(dòng)電源, 還需查證.
請(qǐng)問(wèn)你的產(chǎn)品輸出是電壓源還是電流源 ?  一般應(yīng)是電流源吧.

謝謝樓主.
1: EN61000-3-2 Class C對(duì)諧波騷擾的限制實(shí)際上就等于對(duì)有功功率>25W的產(chǎn)品提出了功率因數(shù)要求:功率因數(shù)低于0.9的電子鎮(zhèn)流器是很難滿足EN61000-3-2標(biāo)準(zhǔn)的(電感鎮(zhèn)流器除外).
2: 歐洲肯定會(huì)要求>25W的大功率LED電源必須符合EN61000-3-2(盡管現(xiàn)在還沒(méi)有頒布).因?yàn)樗鼘儆谡彰麟娫绰?我們按照最嚴(yán)格的條件開發(fā)產(chǎn)品就不會(huì)出問(wèn)題.
3: LED電源的待機(jī)功耗要求我是在Philips的LED驅(qū)動(dòng)芯片發(fā)布會(huì)上看到的.作為照明產(chǎn)品,待機(jī)功耗是沒(méi)有任何要求的,只是能源之星對(duì)開關(guān)電源有要求.所以我認(rèn)為對(duì)LED照明電源也提出待機(jī)功耗要求只不過(guò)是那些芯片廠商想壟斷LED驅(qū)動(dòng)芯片市場(chǎng)而提出的一些技術(shù)壁壘,沒(méi)有任何實(shí)際用處.
4: 通過(guò)幾天的技術(shù)攻關(guān),我的L6562D單級(jí)PFC 30W LED電源已經(jīng)達(dá)到了EPS2.0要求.增加了幾個(gè)元件,控制好啟動(dòng)電流就好了.
5: LED電源一般只能使用恒流電源,對(duì)于100W以上的大功率LED電源有的廠家對(duì)每串LED單獨(dú)恒流,比如17串4并,那么就要做4個(gè)DC-DC恒流模塊.我想了個(gè)辦法可以讓DC-DC恒流模塊降價(jià)80%.不知哪位DX對(duì)該項(xiàng)目有研究,我想跟他交流一下.

能源之星2.0標(biāo)準(zhǔn)中應(yīng)該是輸出功率>75W的就要求PF>0.9, 這是我從原文中摘錄的, 難道我找的標(biāo)準(zhǔn)是錯(cuò)誤的?


B. Power Factor Correction
In addition to the Active Mode efficiency requirements found above, all qualifying power supplies with a nameplate output power (Pno) of greater than or equal to 75 watts must have a true power factor of 0.9 or greater when measured at 100% of rated output.
Note: In recent years, there has been increased interest from the international efficiency community in decreasing the effect that high wattage products have on power quality. To this end, EPA has included power factor requirements for high power devices. Power factor correction helps to cut I-squared R losses in building distribution wiring significantly, yielding increased savings in large buildings. For the purpose of this specification, all EPSs with a power output of at least 75 watts will be required to have a power factor of at least 0.9 at 100% of rated load. This 75-watt cutoff coincides with the European regulation EN 61000-3-2, which went into effect in 2001 and requires limited total harmonic distortion for appliances above 75 watts input power. A power factor of at least 0.9 at 100% of rated load is consistent with the internal power supply requirement in the Version 4.0 ENERGY STAR Computer specification. At these levels, approximately 90% of current ENERGY STAR qualified power supplies can meet this requirement.

由法規(guī) IEC61000-3-2 的燈具歸類 Class C 而言, 確實(shí)沒(méi)提到對(duì) PF 值的要求, 原文如下.
至於能源之星對(duì)於 External power supply 2.0 規(guī)範(fàn)而言, 指的是輸出為固定電壓的 adaptor
類的電源, 我不認(rèn)為有包含LED driver.

Limits for Class C equipment
a) Active input power >25 W
For lighting equipment having an active input power greater than 25 W, the harmonic
currents shall not exceed the relative limits given in table 2.
However, the limits given in table 1 apply to incandescent lighting equipment that has builtin
dimmers or consists of dimmers built in an enclosure.
For discharge lighting equipment that has built-in dimmers or consists of independent
dimmers or dimmers built in an enclosure, the following conditions apply:
– the harmonic current values for the maximum load condition derived from the
percentage limits given in table 2 shall not be exceeded;
– in any dimming position, the harmonic current shall not exceed the value of current
allowed in the maximum load condition;
– the equipment shall be tested according to the conditions given in C.5

TKS

     若有興趣，歡迎跟貼交流哈~~~

請(qǐng)問(wèn)有沒(méi)有充電器的能效測(cè)試方法，多謝！

待機(jī)功耗做個(gè)輔助電源就好過(guò)了哈~

只是對(duì)成本積這些要求~

能源之星已經(jīng)有標(biāo)準(zhǔn)了,你到官方網(wǎng)站上查下, ERP暫時(shí)還沒(méi)有發(fā)現(xiàn)有這個(gè)標(biāo)準(zhǔn).

這產(chǎn)品測(cè)試不知如何，現(xiàn)在已經(jīng)要求到超能源之星了。有電流檔位到1MA的嗎？？現(xiàn)示可以到0.001mw的？？CP-268可以啊。也很好。