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Class D Switching Power Amplifiers and Power D/A conversion

Digital Isolators for level shifters?
Digital Isolators for level shifters?
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Old 21st January 2011, 12:31 AM   #11
nigelwright7557 is offline nigelwright7557  United Kingdom
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I have used the IRS2092 class d chip and had good results.

For my more discrete design I used a IR2113 and that works great.
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Old 21st January 2011, 12:46 AM   #12
authlxl is offline authlxl  China
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Quote:
Originally Posted by lumanauw View Post
Has anyone tried Digital Isolator, like Si8410 for level shifter for classD pulses, replacing Optocoupler like 6N137?
Maybe hcpl0723 ok,the highest optocoupler.
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Old 23rd January 2011, 04:46 PM   #13
ChocoHolic is offline ChocoHolic  Germany
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Originally Posted by lumanauw View Post
Hi, ChocoHolic,

What about the RF modulator/demodulator for transfering internal signal. Will it be a problem for a classD amp?
So far this did not see any critical impact from that, but I was not doing a full amp and also no EMI measurements.
I stoped, when seeing that I would run into issues with dv/dt.
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Old 1st April 2019, 08:31 PM   #14
NMOS is online now NMOS  Germany
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How about 7 years later with SI824xx Class D Driver chips

have freat specs but cant see this chip is popular for Class D compare to IR2110 / IRS2092 IRF / Infineon Chips
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Old 3rd April 2019, 06:54 PM   #15
ViennaTom is offline ViennaTom
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I am doing a LTSPICE sim of a SIC amp using UCC21521C and the IC is doing quite well. (Main problem is the extremely slow simulation engine, no matter if I use my dual 8 core Xeon or my i7-8700K. Have heard that there is a new 56 core Xeon out now of which several can be paired on a mainboard. But $ 70K+ for a computer would be a bit steep....)
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Old 4th April 2019, 06:38 AM   #16
NMOS is online now NMOS  Germany
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Originally Posted by ViennaTom View Post
I am doing a LTSPICE sim of a SIC amp using UCC21521C and the IC is doing quite well. (Main problem is the extremely slow simulation engine, no matter if I use my dual 8 core Xeon or my i7-8700K. Have heard that there is a new 56 core Xeon out now of which several can be paired on a mainboard. But $ 70K+ for a computer would be a bit steep....)
can you share schematic ?
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Old 4th April 2019, 07:06 PM   #17
ViennaTom is offline ViennaTom
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schematic will come to class D folder once it has reached a certain maturity.
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Old 19th April 2019, 08:47 PM   #18
ViennaTom is offline ViennaTom
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Originally Posted by NMOS View Post
can you share schematic ?
-> UCD 8K
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