In article ,
Joerg wrote:

Wow, Mike, I didn't know the technique was this old. But sometimes it takes a
long
time. Like spread spectrum which I believe was invented by an Austrian actress
but
took about 20 years to get going. Now it is everywhere.

With class D it takes some company to get enough engineers behind it and I bet
they
could make a stellar product. Question is whether the market is there or whether
people think that what they got now is good enough.

Regards, Joerg.



I built a Class D amplifier as my EE systems lab project in 1988. I was
inspired by a 1978 paper by Slobodan Cuk (no, I didn't use his topology).
So the idea (and working examples) has been around at least 26 years, but
boy o boy, has the hardware ever got better since then. I was using these
DS0026 driver chips for the output stage that would let out all their magic
smoke if you looked at them funny. Nowadays, the MOSFET drivers, power
MOSFETs, and some great PWM modulators are off the shlef items.