High power class D chips
There are no chips available which can withstand > +/-100v and will run at 350-600KHz.
The only chip that we have tried for full range is the IRS21834 but it has a large propagation delay which precludes it from the higher clock.
Our company produces full range high end class D amplifiers for the home and mobile markets.
After much soul searching for a decent high power (>1,000w at 4 ohm) I have moved away from class D and used a class B with a signal tracking supply in addition to a stepped rail switcher. So the efficiency is very high and I do not suffer from the issues of class D amplifiers.
Steve Mantz
Zed Audio
There are no chips available which can withstand > +/-100v and will run at 350-600KHz.
The only chip that we have tried for full range is the IRS21834 but it has a large propagation delay which precludes it from the higher clock.
Our company produces full range high end class D amplifiers for the home and mobile markets.
After much soul searching for a decent high power (>1,000w at 4 ohm) I have moved away from class D and used a class B with a signal tracking supply in addition to a stepped rail switcher. So the efficiency is very high and I do not suffer from the issues of class D amplifiers.
Steve Mantz
Zed Audio
Yes well, you are not the one who is asking for suggestions either.
BTW, my dream TCA2002 design would use IX6R11S6 + IRFP4227.
Hi,
What is the main difference for example to the TA3020 ? I know that this chip can drive MOS-FETs up to 300 W per channel. Is it a controller + powerchip in one unit and the TCA2002 only a controller ?
Because of the gate driver that's built in to the TA3020, it has a max supply limit of +/-65V.
The TC(A)200x is just a controller/modulator, so the max supply voltage for a design based on this IC will only be limited by the chosen gate driver and FETs.
Thanks much. O.K. this means more design space for the the TC(A) units.
Hope also to realize one day a hit powerful amp with one of these Tripaths.
I'm curious if anyone has looked at these class-D drivers from Silicon Labs. Haven't seen anyone using these yet.
Supplies can be up to +/-750V
and adjustable dead time down to less than a nS. Still, you need to provide the modulator and all protections.
Supplies can be up to +/-750V
and adjustable dead time down to less than a nS. Still, you need to provide the modulator and all protections.
Why are you not 100% happy with it? Just curious
1/ Some ic's pop loudly when switched off.
2/ Some ic's reset when run into hard clipping.
If i swap the ic then quite often the next one doesnt pop or reset when driven hard.
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