I just wanted to let you know that I have worked with XP Power before on a custom design and at least the quote wasn't bad. We ended up going with a different solution because our requirements changed, but I think it might work in your case. I think it is likely that they would not have to re-do all of the certification work, only the parts which were affected by the design change. It might even be as simple as changing the component values or tieing pins differently on the switcher IC so that it has a different current-limit behavior. Even if they have to completely re-do UL cert, I seem to recall that cost about $15k for a typical case so it isn't ridiculous. Sean On Tue, Oct 9, 2012 at 10:23 AM, David VanHorn wrote: >> I don't know if what you are looking for exists as an off-the-shelf >> product, but I have found that both MeanWell and XP Power (both makers >> of power supply bricks) are willing to discuss custom versions. I >> don't know how many you are planning on buying and what kind of NRE >> costs you are willing to pay but I think that they might be willing if >> you were going to buy at least a few hundred units and pay perhaps $2k >> up-front cost. > > The NRE isn't a problem, it's the UL/CE/VDE... certs. > If they don't already make something like this, then it will likely be > very expensive. > > The problem is real, once I understood it, I found it pretty easy to > cause PCB ignition using a 2.7A rated supply. > > Fuses don't help, there's not enough current over time to pop a fuse > that will also conduct rated current indefinitely. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .