謝謝你的無私奉獻!
有兩個問題請教DX,
1: 能源之星2.0對待機功耗的規定是在何種電壓下測量?(若只測~115V那很容易,若要~230V也滿足就有難度).
2: 能源之星2.0只對輸入功率>=100W的電源要求功率因數必須>0.9,只在115V 60Hz下測量.230V 50Hz不測.然而照明行業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電源怎么過能源之星2.0??? 難道做個能源之星2.0只賣到美國加拿大?

高功率因數的LED電源待機功耗能做到<0.3W(~230V)真有難度!
就連Philips 2008年10月剛發布的UBA3070也只能達到待機功耗<=0.5W的水平.
當然Philips也有小功率的驅動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0~50W待機功耗的測試電壓!

謝謝!

現就樓上的問題,簡單回復如下,供參考:

1. 以能源之星規定, 產品規格只使用在 115 V, 則只測 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並沒有要求對 >25W 需要 PF > 0.9, 其要求諧波限制如下表. (可用Chroma 66202+softpanel
來驗證). 請問你說LED驅動器要 PF>0.9, 是依照哪個法規 ?


但其實Steven_Liu 先生不用馬上下結論,  能源之星EPS 2.0是指adaptor, 是否有包括LED驅動電源, 還需查證.
請問你的產品輸出是電壓源還是電流源 ?  一般應是電流源吧.

謝謝樓主.
1: EN61000-3-2 Class C對諧波騷擾的限制實際上就等于對有功功率>25W的產品提出了功率因數要求:功率因數低于0.9的電子鎮流器是很難滿足EN61000-3-2標準的(電感鎮流器除外).
2: 歐洲肯定會要求>25W的大功率LED電源必須符合EN61000-3-2(盡管現在還沒有頒布).因為它屬于照明電源嘛!我們按照最嚴格的條件開發產品就不會出問題.
3: LED電源的待機功耗要求我是在Philips的LED驅動芯片發布會上看到的.作為照明產品,待機功耗是沒有任何要求的,只是能源之星對開關電源有要求.所以我認為對LED照明電源也提出待機功耗要求只不過是那些芯片廠商想壟斷LED驅動芯片市場而提出的一些技術壁壘,沒有任何實際用處.
4: 通過幾天的技術攻關,我的L6562D單級PFC 30W LED電源已經達到了EPS2.0要求.增加了幾個元件,控制好啟動電流就好了.
5: LED電源一般只能使用恒流電源,對于100W以上的大功率LED電源有的廠家對每串LED單獨恒流,比如17串4并,那么就要做4個DC-DC恒流模塊.我想了個辦法可以讓DC-DC恒流模塊降價80%.不知哪位DX對該項目有研究,我想跟他交流一下.

能源之星2.0標準中應該是輸出功率>75W的就要求PF>0.9, 這是我從原文中摘錄的, 難道我找的標準是錯誤的?


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 IEC61000-3-2 的燈具歸類 Class C 而言, 確實沒提到對 PF 值的要求, 原文如下.
至於能源之星對於 External power supply 2.0 規範而言, 指的是輸出為固定電壓的 adaptor
類的電源, 我不認為有包含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~~~

請問有沒有充電器的能效測試方法，多謝！

待機功耗做個輔助電源就好過了哈~

只是對成本積這些要求~

能源之星已經有標準了,你到官方網站上查下, ERP暫時還沒有發現有這個標準.

這產品測試不知如何，現在已經要求到超能源之星了。有電流檔位到1MA的嗎？？現示可以到0.001mw的？？CP-268可以啊。也很好。