Wide input range power supply

Dmitry,

You will need to provide a lot more information before anyone could provide you with the "best" solution.

1) It's an AC input.  Does the input voltage need isolation or would a non-isolated solution function properly?

2) Why such a massive range in input voltage?  A 20:1 input range is absolutely massive.

3) Since you list a current and power, one would assume this is a constant current supply, is that correct?

4) Does this need to meet specific package / form-factor requirements?

5) What are the relavtive priorities of size, cost and efficiency?

Peter, I am checking the answers with my customer. As soon as I get more details, I will reply.

Peter,

let me give you answers to your questions:

1)-2) The customer actually needs 2 input ranges: 10…36 AC/DC and 90…240 AC. This could be organized as two ranges @ one input or 2 separate inputs. The 90..240 AC should be isolated.

2) Massive range needed to cover all possible input voltages of the customer's end device

3) There should be a constant current supply

4) no specific requirements for mechanics

5) the priorities for the design are: (1) cost; (2) efficiency; (3-lowest) size

I know it's an older thread but was this ever resolved?

I have a similar requirements and I'm guessing it's for the same industrial sector, the input range as above would make me VERY HAPPY but I would settle for just the lower AC input range of 30-50Vac.

My thread here:

http://e2e.ti.com/support/power_management/isolated_controllers/f/188/t/143417.aspx