XMAS work: LTSPICE SOCD SIC - "time step too small" - Page 4

kASD · 31st December 2018, 04:35 AM

Quote:

Originally Posted by ViennaTom

For a two channel amp, I think it would be way enough if the 3 PSUs together can deliver 4500W continuously at the 360V rail. Add a combined overload capability of maybe 10000W for up to one second, while big electrolytics would help to get through shorter bursts of even bigger power and you are good to go.

The new Powersoft X series X4/X8 uses active clamped flyback single stage PFC on each phase,they can run on three and single phase thru parallel combination,has burst capability of 15kW but continuous average is 2kw only. Capacitors are only at secondary side.

ViennaTom · 1st January 2019, 03:32 PM

Did you all see the fireworks and celebrations around the globe last night?
Well, the reason to celebrate was wedding day between SOCD and SIC:

SOCD: A new Self oscillating class D amp was invented - no need to infringe on UCD patent.
SIC: A new technology that enables 600V parts with fast usable body diode (unlike superjunction) and low Rdson.

SOCD SIC: A revolutionary new multi-KW amplifier that will turn the whole world into one big partyland!!!! Let's get the party started!

@kASD: I can see clearly the need to have the COMP inputs within specified limits, otherwise the COMP may misbehave. In case of my COMP it is -0.1V <-> VCC-1.2V. So why not just use zeners to keep the inputs where they need to be? No need for a common mode correction.....

ViennaTom · 1st January 2019, 03:48 PM

Went from my WIN7-system to my WIN10-system to continue working on the amp simulation and the new WIN10 dows not let me edit the standard.dio! WTF??
Any idea?

voltwide · 1st January 2019, 06:05 PM

Agreed as long as they are used for the power supply. Transferring pwm pulses with varying duty cycle is another story.

ViennaTom · 3rd January 2019, 08:08 PM

Was able to edit the standard.dio from OUTSIDE WIN10. I had to boot ubuntu to edit the file which has special protection from Windows.
Amp is working. I am adjusting minor details.

Ultima Thule · 3rd January 2019, 10:28 PM

Quote:

Originally Posted by kASD

I use the transformer at 500khz with fixed dutycycle of 50%, just to power the gate driver chip at high and low sides at 15VDC.

ah.. I see, now that's some extreme fidelity supply running such high frequencies.

1st January 2019, 06:05 PM	#34
voltwide diyAudio Member Join Date: Jan 2010	Agreed as long as they are used for the power supply. Transferring pwm pulses with varying duty cycle is another story. __________________ tuby or not tuby, that is here the question!

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1st January 2019, 03:32 PM	#32
ViennaTom diyAudio Member Join Date: Apr 2010	Did you all see the fireworks and celebrations around the globe last night? Well, the reason to celebrate was wedding day between SOCD and SIC: SOCD: A new Self oscillating class D amp was invented - no need to infringe on UCD patent. SIC: A new technology that enables 600V parts with fast usable body diode (unlike superjunction) and low Rdson. SOCD SIC: A revolutionary new multi-KW amplifier that will turn the whole world into one big partyland!!!! Let's get the party started! @kASD: I can see clearly the need to have the COMP inputs within specified limits, otherwise the COMP may misbehave. In case of my COMP it is -0.1V <-> VCC-1.2V. So why not just use zeners to keep the inputs where they need to be? No need for a common mode correction.....

1st January 2019, 03:48 PM	#33
ViennaTom diyAudio Member Join Date: Apr 2010	Went from my WIN7-system to my WIN10-system to continue working on the amp simulation and the new WIN10 dows not let me edit the standard.dio! WTF?? Any idea?

3rd January 2019, 08:08 PM	#35
ViennaTom diyAudio Member Join Date: Apr 2010	Was able to edit the standard.dio from OUTSIDE WIN10. I had to boot ubuntu to edit the file which has special protection from Windows. Amp is working. I am adjusting minor details.