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Simon7382
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Lots of smoke and mirriors - nothing new
Simon7382   11/23/2014 1:12:10 AM
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Well, this presentation needs a couple of correcttions:

1. Primary side sensing is MUCH more than 7 years old. Look up the original LTC patent, which is more than 15 years old.

2. Magnetic feedback (or pulse feedback) for isolated converters is also not new by far. It was first proposed by a small British semiconductor company IPS about 20 years ago and a chip set implementing it was introduced by National Semi more than 15 years ago (LM3001 and LM 3010) and published at the HFPC conference (maybe the presenter from PI is not old enough to have participated at HFPC conferences.

3. Synchronous rectification on the secondary side of flyback converters is also ancient, I did not take the time to research whether it is 10 or 20 years old, or somehwhere inbetween.

Hence, there is NOTHING NEW in what PI is doing here. Now, that does not mean that these products will not be successful, that depebnds on the implementation, its robustness and the price.



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