AoE x-Chapters, 45 years of power MOSFETs

W

Winfield Hill

Guest
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


--
Thanks,
- Win
 
On 2019/07/19 9:56 a.m., Winfield Hill 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
Click to expand...

Win, thanks for putting this out - it clears up many questions I had
about MOSFETs!

At this time I can only enjoy and appreciate the work you did!

John :-#)#
 
Winfield Hill 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
Click to expand...

Chapter 3x is the x-Chapter continuation of
Chapter 3 in AoE III, about JFETs, MOSFETs,
IGBTs. Chapter 3x is filled with advanced
practical design information, application-
oriented theory, especially for linear use
of power MOSFETS, graphs and measurements,
and interesting, unusual design examples.

Selecting the right part is a big part of
this type of engineering, and this section
3x.11 is a guide to differences and choices.


--
Thanks,
- Win
 
On Friday, July 19, 2019 at 12:56:52 PM UTC-4, Winfield Hill 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


--
Thanks,
- Win
Click to expand...

A quick skim. A few of the tables look to have an error in the last row
where instead of listing IRF8xx it says IRF6xx (6 not 8)

GH
 
George Herold wrote...
On Friday, July 19, 2019, Winfield Hill 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

A quick skim. A few of the tables look to have
an error in the last row where instead of listing
IRF8xx it says IRF6xx (6 not 8)
Click to expand...

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!


--
Thanks,
- Win
 
On 07/19/2019 06:56 PM, Winfield Hill 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
Click to expand...
There seems to be some confusion wrt the Tc vs TJ.
in the text you write sthg about the case temp at 100 C
but the table says Tj.
 
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!
Click to expand...

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.



--
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.
 
Cursitor Doom 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.
Click to expand...

You're better off downloading the file, rather than trying
to view it in a browser. Try from the folder level.
https://www.dropbox.com/sh/nf0sq8ut4yuqmte/AAAKKZQUQxQ3qAiKiOL5xXGJa?dl=0



--
Thanks,
- Win
 
Johann Klammer wrote...
On 07/19/2019 06:56 PM, Winfield Hill 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

There seems to be some confusion wrt the Tc vs TJ.
in the text you write sthg about the case temp
at 100 C but the table says Tj.
Click to expand...

OK, thanks, very good catch. Text on file page 3,
"IR also provided an additional conservative spec
in its datasheets, maximum drain current at a case
temperature TC = 100 deg C (also a calculated value)."

The table was supposed to also be Tc = 100C, not Tj.
I checked for that issue in the rest of the text.


--
Thanks,
- Win
 
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
Click to expand...

Who was it that made medium-power VMOS fets before the IRF things?

I remember when IR made selenium rectifiers.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com
 
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?
Click to expand...

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
 
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"
Click to expand...

THAT worked! Thanks.
 
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.
Click to expand...

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.
 
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
Click to expand...

No mention of RF Mosfets?

New radio designs are moving to Mosfet PA's.

Cheers
 
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?
 
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?
Click to expand...

Yep, that's beyond the scope of our book.


--
Thanks,
- Win
 
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.

Cheers
Click to expand...

DMOS 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.
 
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.
 
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.
Click to expand...

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
 
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.

Cheers
Click to expand...

GaN fets are wildly better than any mos parts.


--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
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