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转帖如下：
"The Wire AMP" Class A/AB Power Amplifier based on the LME49830 with Lateral Mosfets
Hi Guys,
There's a new addition to "The Wire" series of projects I've been working on lately.
It's push-pull amplifier based on the LME49830 front end which drives a pair of ACD101NDD and ACD103PDD lateral mosfets. It's immensely versatile in that you can run essentially any rail voltage from about +/- 10V up to about +/-90V on the mosfets and get anywhere from 1W to 400W of output depending on the load and the rails. This is an amp that can be tailored to any situation.
You can also run the amp in class A, class AB, or class B if that's your thing.
For the input, you can run either fully balance, or with just one 0R jumper it can be configured for SE input. You can run the amplifier AC or DC coupled. There are separate supply options for running the LME49830 on higher rails than the mosfets which improves efficiency and allows for a good regulated supply for the front end. Alternatively, with a pair of 0R jumpers, you can run just a single +/- supply for both the LME and the mosfets.
The board is small enough to fit pretty much anywhere, and all you need to provide is the power supply and the heatsink! I've even got an optional regulated supply board for the LME section.
I've attached the schematic, the Excel worksheet to calculate power outputs and rails, along with the layout and a BOM.
The PCB will be a 3 layer design with a ground plane in the middle and signal routing on either side. The LME has its own heatsink and the two mosfets are mounted on a user supplied sink off the end of the board. The board measures 2.45" by 1.6" and has all the required mounting points.
I will also be running a kit with this that includes all of the parts required to build a complete amplifier. All the user will need to supply is the main heatsink and the power supply.
PCB's are going to be $12 per channel, and a full kit including all 0.1% thin film resistors, and the best caps available for this application will be $78 per channel. I've attached the price list for the amplifier kit which contains all the details.
There will be 50 boards made available, and it will be first come first serve. Please post here if you're interested in a just a board, or a board and a kit, along with how many of each. Any technical question are welcome as well!
Measurements to follow!
Cheers,
Owen
http://www.diyaudio.com/forums/s ... ateral-mosfets.html
全部资料老外都贴出来了。不知道有没有人有兴趣出套件啊？ 想diy 一个玩玩。
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Price List for LME AMP.pdf
(24.31 KB, 下载次数: 1125)
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发表于 2011-11-11 16:53
