John Larkin wrote...> >On 19 Jul 2019 09:56:28 -0700, Winfield Hill <winfieldhill@yahoo.com> >wrote: > >> A new section from the AoE x-Chapters book, >> for you to read, enjoy, and make comments. >> >> A 30-Year MOSFET Saga, The next 15 years, >> and Four kinds of power MOSFETs. >> >>https://www.dropbox.com/s/0qh8dxgielrkqvq/chap-3x.11_MOSFET-saga_2019-07-19.pdf?dl=0 > > Who was it that made medium-power VMOS fets > before the IRF things?I think, Siliconix. I have an old Siliconix databook someplace, couldn't locate it just now. Hardcover Siliconix MOSPOWER Applicatiosns book is dated 1984, features IRF part numbers for the more beefy parts. -- Thanks, - Win
AoE x-Chapters, 45 years of power MOSFETs
Started by ●July 19, 2019
Reply by ●July 19, 20192019-07-19
Reply by ●July 19, 20192019-07-19
On 19 Jul 2019 09:56:28 -0700, Winfield Hill <winfieldhill@yahoo.com> wrote:> A new section from the AoE x-Chapters book, > for you to read, enjoy, and make comments. > > A 30-Year MOSFET Saga, The next 15 years, > and Four kinds of power MOSFETs. > >https://www.dropbox.com/s/0qh8dxgielrkqvq/chap-3x.11_MOSFET-saga_2019-07-19.pdf?dl=0No mention of RF Mosfets? New radio designs are moving to Mosfet PA's. Cheers
Reply by ●July 19, 20192019-07-19
On 2019-07-19, Cursitor Doom <curd@notformail.com> wrote:> On Fri, 19 Jul 2019 11:50:08 -0700, Winfield Hill wrote: > >> Hey, you are right, thanks! And that was in the section reviewed by >> our copy-editor, showing it needs to be reviewed by (multiple) >> engineers! Keep looking! > > I'd love to, but the browser crashed: ".pdf files are supported but > something went wrong." Funny, it displayed it ok for a couple of seconds, > then promptly fell over. Happens on each attempt.You can download the file and view off-line by changing the URL's terminal "dl=0" to "dl=1" -- When I tried casting out nines I made a hash of it.
Reply by ●July 19, 20192019-07-19
On Fri, 19 Jul 2019 23:56:28 +0000, Jasen Betts wrote:> You can download the file and view off-line by changing the URL's > terminal "dl=0" to "dl=1"THAT worked! Thanks.
Reply by ●July 19, 20192019-07-19
On Fri, 19 Jul 2019 19:46:52 -0400, Martin Riddle wrote:> New radio designs are moving to Mosfet PA's.THAT would be interesting. How about it, Win?
Reply by ●July 19, 20192019-07-19
Cursitor Doom wrote...> > On Fri, 19 Jul 2019 19:46:52 -0400, Martin Riddle wrote: > >> New radio designs are moving to Mosfet PA's. > > THAT would be interesting. How about it, Win?Yep, that's beyond the scope of our book. -- Thanks, - Win
Reply by ●July 20, 20192019-07-20
On Fri, 19 Jul 2019 19:46:52 -0400, Martin Riddle <martin_ridd@verizon.net> wrote:>On 19 Jul 2019 09:56:28 -0700, Winfield Hill <winfieldhill@yahoo.com> >wrote: > >> A new section from the AoE x-Chapters book, >> for you to read, enjoy, and make comments. >> >> A 30-Year MOSFET Saga, The next 15 years, >> and Four kinds of power MOSFETs. >> >>https://www.dropbox.com/s/0qh8dxgielrkqvq/chap-3x.11_MOSFET-saga_2019-07-19.pdf?dl=0 > >No mention of RF Mosfets? > >New radio designs are moving to Mosfet PA's. > >CheersDMOS I think are those RF ones. Siliconix and I think Toshiba both made early VMOS FETs I think. Tried them in a class AB audio amplifier in the late 1970s when they were first available. Worked OK. Haffler made amps from those early FETs too.
Reply by ●July 20, 20192019-07-20
On Fri, 19 Jul 2019 19:04:49 -0700, Winfield Hill wrote:> Yep, that's beyond the scope of our book.In detail I've no doubt it would be! But just a summary overview in passing wouldn't hurt, shirley? -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition.
Reply by ●July 20, 20192019-07-20
On 19 Jul 2019 14:53:46 -0700, Winfield Hill <winfieldhill@yahoo.com> wrote:>John Larkin wrote... >> >>On 19 Jul 2019 09:56:28 -0700, Winfield Hill <winfieldhill@yahoo.com> >>wrote: >> >>> A new section from the AoE x-Chapters book, >>> for you to read, enjoy, and make comments. >>> >>> A 30-Year MOSFET Saga, The next 15 years, >>> and Four kinds of power MOSFETs. >>> >>>https://www.dropbox.com/s/0qh8dxgielrkqvq/chap-3x.11_MOSFET-saga_2019-07-19.pdf?dl=0 >> >> Who was it that made medium-power VMOS fets >> before the IRF things? > > I think, Siliconix. I have an old Siliconix > databook someplace, couldn't locate it just now. > Hardcover Siliconix MOSPOWER Applicatiosns book > is dated 1984, features IRF part numbers for > the more beefy parts.I think VMOS was a v-shaped notch etched through n-p-n layers, with the gate deposited in the notch, so the current flow was vertical. IR extended that idea to many cells, like an IC. That was the hexfet, with 6-sided cells. Then as I recall Motorola or someone did the same thing, but with square cells. -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●July 20, 20192019-07-20
On Fri, 19 Jul 2019 19:46:52 -0400, Martin Riddle <martin_ridd@verizon.net> wrote:>On 19 Jul 2019 09:56:28 -0700, Winfield Hill <winfieldhill@yahoo.com> >wrote: > >> A new section from the AoE x-Chapters book, >> for you to read, enjoy, and make comments. >> >> A 30-Year MOSFET Saga, The next 15 years, >> and Four kinds of power MOSFETs. >> >>https://www.dropbox.com/s/0qh8dxgielrkqvq/chap-3x.11_MOSFET-saga_2019-07-19.pdf?dl=0 > >No mention of RF Mosfets? > >New radio designs are moving to Mosfet PA's. > >CheersGaN fets are wildly better than any mos parts. -- John Larkin Highland Technology, Inc lunatic fringe electronics
