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Old 8th December 2012, 09:15 PM   #151
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Attached the updated schematics.
Power stage is now updated according discussion, manual calculation and simulation.
V0.1 is obviously more complex than V0.0, but with respect to the discussed
experiences of multiple friends here and finding the same result in my calculations, I am skipping the initial plan use the body diodes.
Qrr is simply to high and would lead to a less reliable design.
The bunch of small caps at the switching stage could theoretically be solved by two caps, but multiple small SMD caps will be fortunate to achieve low parasitic inductances in the layout.

Again looking forward to your valuable feedback.


P.S.
NIP means Not In Place, but intended as an option.
Attached Files
File Type: pdf SystemD_2kW_Supply_V0dot1.pdf (70.6 KB, 231 views)
File Type: pdf SystemD_2kW_Modulator_V0dot1.pdf (93.0 KB, 210 views)
File Type: pdf SystemD_2kW_Power_V0dot1.pdf (133.7 KB, 241 views)
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Old 8th December 2012, 09:39 PM   #152
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Im trying to make sense of the two comparators in parallel beeing different types.

Is it that one is open emitter and the other open collector to form a totem pole output ?

I thought the LT1016/MAX913 type was already totme pole output rather than open collector/emitter.
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Old 9th December 2012, 09:48 AM   #153
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Have a look to posting #53
SystemD_2kW, any interest for an open design?
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Old 10th December 2012, 01:16 PM   #154
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Click the image to open in full size.

I have question with the modulator configuration

Amplifier 1 (E1)
================
C315 = 110p
R166 = 15k ; sets the frequency response ?
r374 = 270k ; sets the overall gain ?

Amplifier 2 (E25)
================

Network A
=========
E88 = 10n
R165 = 1.8k
C89 = 520p
R108 = 8.2K
R108 = 10R ; Forms a tuned circuit anyone help me figure out the calculated values here ?

Network B
=========
R105 = 1K
C87 = 33NF
106 = 11K ; forms a delay help me figure out the calculated values here ?


Thanks
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Old 11th December 2012, 05:00 AM   #155
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Charles has published his loop topology with AES and later here on DIYaudio.com.
Another post-filter NFB topology
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Old 11th December 2012, 06:08 AM   #156
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Thank you for the reference choc dude.
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Old 11th December 2012, 07:08 PM   #157
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If you want it as PDF just PM me.
If you want a printout with my signature you'd have to wait until April 2013 !

BTW: Whereabouts in CT do you live ?

Regards

Charles
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Old 11th December 2012, 07:30 PM   #158
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Quote:
Originally Posted by phase_accurate View Post
If you want it as PDF just PM me.
If you want a printout with my signature you'd have to wait until April 2013 !

BTW: Whereabouts in CT do you live ?

Regards

Charles
Send you a PM the jpeg version is a bit distorted and hard to read.
Thanks
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Old 11th December 2012, 08:21 PM   #159
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Quote:
Originally Posted by Reactance View Post
Thank you for the reference choc dude.
Hi Reactance,
you're welcome.
Great that you are already in contact with Charles.
2 years ago I also had a short exchange with him about his loop topo.
It's always best to get the information directly from the originator.
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Old 11th December 2012, 08:29 PM   #160
fredos is offline fredos  Canada
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Hi choco... Take a look at this... maybe you will see same thing as me... :-) fgh40n60smd
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