First of all, I'm unsure of whether I should ask this in the Power Supplies or Class D forum - I'm thinking that here is the better bet, but if not feel free to move it to the relevant location.
I'm looking to as a new project design a "full digital" Class D stereo amp, with SPDIF input using a WM8804 or WM8805 chip. The I2S signal will then go into the TAS5086 PWM processor, and the TAS5612LA power stage. A microcontroller will be used to adjust volume and switch the inputs.
All of the above I should be able to take care of.
My problem lies with the fact that for safety's sake, I do not want (or have the skill) to design my own power supply for this amp. A laptop power supply is often the common choice, but those unfortunately do not provide the 32.5V necessary for the power stage to work properly.
Therefore, I'm looking for a proven SMPS design or product that can be used for my project. When disassembling old electronic devices, I often see that their power supplies are placed on a seperate board and made by another manufacturer. I'm aiming for this kind of device, but in single rather than OEM quantities.
Thanks!
I'm looking to as a new project design a "full digital" Class D stereo amp, with SPDIF input using a WM8804 or WM8805 chip. The I2S signal will then go into the TAS5086 PWM processor, and the TAS5612LA power stage. A microcontroller will be used to adjust volume and switch the inputs.
All of the above I should be able to take care of.
My problem lies with the fact that for safety's sake, I do not want (or have the skill) to design my own power supply for this amp. A laptop power supply is often the common choice, but those unfortunately do not provide the 32.5V necessary for the power stage to work properly.
Therefore, I'm looking for a proven SMPS design or product that can be used for my project. When disassembling old electronic devices, I often see that their power supplies are placed on a seperate board and made by another manufacturer. I'm aiming for this kind of device, but in single rather than OEM quantities.
Thanks!
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I believe Connexelectronic do a range of SMPS.
Personally, I tend to steer away from SMPS.
A linear supply is simpler and hardier.
Personally, I tend to steer away from SMPS.
A linear supply is simpler and hardier.
SMPS are the best choice in technical manner especially for Class-D as they can provide the lowest impedance in very wide frequency range.
But good SMPS is not easy to design or build at all. There are so many potential pitfalls in design or implementation. Enormous experience and knowledge are required and even more if you stay away from hard-switching topologies which I do not recommend at all for audio application.
By my opinion, the best choice are LLC ZVS topologies, Ćuk or phase shifted half or full bridge (PSM) converters optimized for ZVS/ZCS.
Currently, there is ongoing open hardware LLC ZVC project leaded by Macola for audio application based on Fairchild's FSFR2100 which we expect to be finished very soon at this forum:
Nas LLC sa FSFR2100
Design is conceptually oriented for less experienced builders which do not have some specific measuring instruments or oscilloscopes but without compromise on technical performance.
When design and testing are done we will publish complete project, also on this forum.
In meantime, the easiest and probably the safest way is to use classical "bulky" transformers and capacitors …
But good SMPS is not easy to design or build at all. There are so many potential pitfalls in design or implementation. Enormous experience and knowledge are required and even more if you stay away from hard-switching topologies which I do not recommend at all for audio application.
By my opinion, the best choice are LLC ZVS topologies, Ćuk or phase shifted half or full bridge (PSM) converters optimized for ZVS/ZCS.
Currently, there is ongoing open hardware LLC ZVC project leaded by Macola for audio application based on Fairchild's FSFR2100 which we expect to be finished very soon at this forum:
Nas LLC sa FSFR2100
Design is conceptually oriented for less experienced builders which do not have some specific measuring instruments or oscilloscopes but without compromise on technical performance.
When design and testing are done we will publish complete project, also on this forum.
In meantime, the easiest and probably the safest way is to use classical "bulky" transformers and capacitors …
And that is why I'm looking for a SMPS designed by a professional, either completed or as a bare PCB for me to solder. As stated in the first post, I have no intention of designing my own SMPS.
Then take an look here in section Power supplies
https://www.hypexshop.com
That are probably the best ones on market for audio application.
https://www.hypexshop.com
That are probably the best ones on market for audio application.
I don't know anything about that, only knows that everything which Hypex made are top quality.
Alternative is something from Delta, they are one of the best company in the world for various SMPS, but very expensive …
Products - Standard Power Module (DC/DC Converter & AC/DC Module) - Delta Group
Alternative is something from Delta, they are one of the best company in the world for various SMPS, but very expensive …
Products - Standard Power Module (DC/DC Converter & AC/DC Module) - Delta Group
Connexelectronic
These seem well regarded. Folk use them with Hypex amp modules to save a few $$$.
You should be able to find something that fits your needs from this range.
These seem well regarded. Folk use them with Hypex amp modules to save a few $$$.
You should be able to find something that fits your needs from this range.
The Connex SMPS always comes well out in tests here on DIY.
Other makers are
Smps For Audio
SWITCH POWER SUPPLY - Shop Cheap SWITCH POWER SUPPLY from China SWITCH POWER SUPPLY Suppliers at SINEWAVE SAMPLE STORE on Aliexpress.com
Other makers are
Smps For Audio
SWITCH POWER SUPPLY - Shop Cheap SWITCH POWER SUPPLY from China SWITCH POWER SUPPLY Suppliers at SINEWAVE SAMPLE STORE on Aliexpress.com
Does anyone have experience shipping with Connex? The last thing I want is to be hit be some crazy brokerage fees or similar (I once had $40 brokerage and fees for $20 worth of parts)😱
He use to use DHL or FedEx for a flat fee of ~$30USD, but not sure if that is still the case. No others fees I'm aware.
Power Supplies
If you are in the US they ship from Oregon, so no duties. They have a few possibilities in your voltage range...
If you are in the US they ship from Oregon, so no duties. They have a few possibilities in your voltage range...
The very same ones. If you click on one it even says from Connex. Glad to know some are stocked here in the states. Maybe I can save on some shipping next time.
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