Re: the gutless, bloated, and fried power supply hall of shame
Here's article discussing it:
http://www.eetimes.com/design/power-...ork-in-the-US-
You're right, seems PFC is not required but it really makes it easy to obide by all the rules if active pfc is used and possibly also passive pfc.
So those harmonics have to be met, pfc passive or active can be used for it but it's not required.
So if you want to label the psu as 80plus you need to use some form of pfc
later edit: this url seems to be a powerpoint presentation discussing the IEC 61000-3 standard : https://cdn.badcaps-static.com/pdfs/...53d00d3604.pdf
this also has some good info : https://cdn.badcaps-static.com/pdfs/...62c0d0ae47.pdf
hint : type in google "IEC 61000-3 filetype:pdf" and you get more.
<- this seems like the official standard 61000-3-3
Here's article discussing it:
http://www.eetimes.com/design/power-...ork-in-the-US-
You're right, seems PFC is not required but it really makes it easy to obide by all the rules if active pfc is used and possibly also passive pfc.
The European Union (EU) has developed a current harmonic content specification (EN61000-3-2) to improve line power utilization. Meeting these harmonic current criteria can be easily accomplished by using power factor correction (PFC) boost pre-regulators. However, achieving this specification does not necessarily require a power factor controller or a high power factor.
To reduce design costs, some power-supply designers found they could meet EN/IEC61000 requirements by using other means with some filtering. The designs could pass the harmonic requirements with a PF as low as 0.8.
However, Energy Star (Reference 1) is proposing a new PF legislation of 0.9 at full load in 2008 that will become part of the 80 Plus initiative (Reference 2). As this becomes a reality, some of the old IEC 61000 designs may not meet this new stringent requirement. In order to have a PF greater than 0.9.PFC, pre-regulators will need to be added to these designs
However, Energy Star (Reference 1) is proposing a new PF legislation of 0.9 at full load in 2008 that will become part of the 80 Plus initiative (Reference 2). As this becomes a reality, some of the old IEC 61000 designs may not meet this new stringent requirement. In order to have a PF greater than 0.9.PFC, pre-regulators will need to be added to these designs
later edit: this url seems to be a powerpoint presentation discussing the IEC 61000-3 standard : https://cdn.badcaps-static.com/pdfs/...53d00d3604.pdf
this also has some good info : https://cdn.badcaps-static.com/pdfs/...62c0d0ae47.pdf
hint : type in google "IEC 61000-3 filetype:pdf" and you get more.
<- this seems like the official standard 61000-3-3
Comment