Where is the gain?
...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at
Where is the schematic ?
-- Thanks, Fred.
It got taxed away to finance Obamacare.
-- Regards, Joerg http://www.analogconsultants.com/
Try the link again. ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at
How can V(GATE) go to 8V when the circuit only has a 3.8V supply?
-- Regards, Joerg http://www.analogconsultants.com/
You, of all people, don't recognize a boost converter ?:-) ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
;-)
Except it's not funny. There are all kinds of taxes hidden in that monster :-( ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at
Oh, yeah, didn't see that you are switching with 5nsec transitions. That's awfully small print on the schematic.
The rest is a follower which means at the small load resistance eventually QM2 goes into max conduction. So what's the problem?
-- Regards, Joerg http://www.analogconsultants.com/
I know :-(
And of course, once it collapes, the taxes will not go away. My former employer is already packing up and leaving the country.
-- Regards, Joerg http://www.analogconsultants.com/
Some lurkers have claimed Miller "gain" around the upper FET. ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
I can see where the gain is no problem. The voltage gain is provided by QM3. This is pretty much your "high side driver" operated in the linear zone. (kinda sounds like a movie eh ?)
One thing though, I see no prctical purpose for DM2. If the thing is linear it just conducts all the time so why have it ?
Now that I think of it, you could probably eliminate it in the "high side driver" as well.
No, it is not operating in the linear zone.
This is mostly a semantic issue, of course. The distinction among the CS, CD, CG configurations is just which terminal you choose to use for the reference voltage.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Yep. Taking Miller's name in vain ;-)
The "distinction" is that the various capacitances don't exist as separate entities... they're a fiction created by model makers.
What configuration ends up with multiplication of the "real" capacitance ?? ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
And it's got nothin' to do with capacitance ...
-- Regards, Joerg http://www.analogconsultants.com/
Looks like it certainly could though, with the lower bandwidth limit set by L1.
That reminds me, I'm out of both Drambuie and Jack Daniels ;-) ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Like I said, they're all the same except for what you call ground. Back in the day, the Miller effect was surprising enough that the guy's name is still attached to it, what, 90 years later? Then it was used in TVs and scopes for decades, with an external capacitor.
Whether you call it multiplication depends on what you think the AC input is: v_gs or v_dg. Semantics.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Make that 95 years.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Client: "But you couldn't have done this all by yourself, could you? Who was your assistant?" ... "My assistant? Jose Cuervo."
-- Regards, Joerg http://www.analogconsultants.com/
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