ultra high efficiencypower supply

[yehuda.ortal@gmail.com]

Hi,
I would like to buy a design for power supply

The Power supply spec:
1. Input voltage: 100vac - 270Vac (Wide input)
2. Output constant current: 400mAmp.
3. Output Voltage: 48vDC
4. Ultra high efficiency around 90%
5. Max mechanical Dimensions: [L x W x H] : 25cm x 1.0cm x 0.8cm
6. Max cost 8USD.
It is preffered to implement by Microcontroler (additional cost) like Microchip in order to use PWM at the output and remote communication.

Thank you
Yehuda

 

[MikeMl]

Hello, **broken link removed**

 

[yehuda.ortal@gmail.com]

Thanks Mike,
The max dimensions are over my requirements.

Thank you again,
Yehuda

 

[smanches]

You're dimensions are not going to work. There is not even enough room to have traces, much less have room for anything else.

25cm x 1.0c with only 0.8cm for height?

I think you're trying to control too many aspects of the design process at once. That is, cost, size and features. pick only two of the three.

I think the smallest SMPS I've seen are the cell phone wall plugs, and even they are larger.

 

[Rey]

The higher the efficiency, the larger the supply. Especially with such a colorful input range.

Might I suggest just using a battery?

 

[tcmtech]

Multiply your volume by a factor of 50 and your cost by a factor of 10 and you will be in the more plausible size and cost range.

 

[yehuda.ortal@gmail.com]

ultra high effidiency power supply

Dear member,

have already same dimensions and price but only 70% efficiency.
I can get more length instead of 20cm can be 25cm.

Thanks,
Yehuda

 

[Mr RB]

Please show your schematic for that PSU with 70% efficiency in that size. Or photos?