Recent content by jonnyGURU

That's not how it works. You're moving larger D2D from inside the PSU to dedicated, appropriately sized, thus more efficient, D2D regulators on the motherboard. Your motherboard already has D2D that regulates lower voltages. What changes is you're regulating from 12V which is lower current...

Too hard to work with. SiC can do just as good a job for less money and less effort.

Or.. Just vents all over... and an aluminum housing. :D

Modular interface gets in the way, but maybe an 80mm exhaust on a Gold or Platinum. Submit it to Cybenetics to see if we can get a A+ rating. :D

You do realize that the Nightjar and fanless Seasonic are EXACTLY what I am describing when I say, "the current solution of 'just sell a 1200W PSU as an 850W PSU' is actually a much cheaper solution"? Because that is exactly what they are doing and why their cost is so high.

Yes. And that potting material is VERY expensive. I've looked into it to create a fanless PSU option, and the current solution of "just sell a 1200W PSU as an 850W PSU" is actually a much cheaper solution. You're not wrong. But we're talking about the PSU specifically. And yes... if there...

These guys are talking from a different market segment than what we're discussing, clearly. The investment in engineering and safety certification to change a BOM at a whim of a quality electronic product (I'll leave it generic like that) costs more than any cost savings. That said, there are a...

Thing is, those push pull 80s don't have to be loud and will cool much better. But customer perception is so distorted now..... You have a PSU with a "silent" and "normal" mode?

It doesn't matter what "real load" is. If you put out a product that is advertised to put out 1000W, for example, at 90Vin, at 50°C, it needs to meet those specs. What you're saying is you'll accept whatever as long as it operates at your requirement... which is perfectly fine. But if you're...

I would be more concerned with the main transformer running over 100°C than the BD. Here is an example of a unit we just failed because the T2 Tj/TjMax is at 73.2% and the L2 is at 73.8%. This test was run at 50°C because it's a higher end product with higher expectations: To keep this on...

750W. And I did state the exhaust temp was 60°C. And the report says that the chamber temperature is 40°C. But, for the record, the actual temp measured at a thermistor at the intake was reading 40.10°C. Welp. Sounds like you're the next PSU reviewer for TPU. You can have my job too...

Why are you assuming that only some parts are tested and not others? Here is an example of one of my thermal test reports: And yes... some components, like capacitors, can become hot by proximity. But that has nothing to do with high exhaust temperatures being a negative. If your PSU is...

See, this is a perpetuation of a misconception. AC not converted to DC is converted to heat. If the PSU is more efficient, it generates less heat. If you have two PSUs with the same efficiency at the same load and one has hotter exhaust than the other, that is not because on PSU is running...

I don't necessarily agree with you. Sure, a PSU should be a pass/fail. It should either pass all of the tests or not. But the reviews are typically done very quickly, with one unit and often incorrectly. When I test a PSU after an EVT, DVT, PVT, I test five units on the ATE. At 90V and...

If you're living in some alternate universe where wrong is right... I have no time for you. People with more objective opinions are welcome.