Re: Power supply advice needed


René wrote:
On 28 Sep 2006 02:58:03 -0700, seegoon99@xxxxxxxxx wrote:

Hi to all.
I am going to be designing a psu for one of our products.
It's going to be 220Vac in 13V dc (~15 - 20W) out.Must be
isolated.Reasonable regulation.
It will charge a battery (13.8V) and power a logic board(with its own
post regulator)
Cost is a big issue here. Smaller the better obviously.
I am leaning towards using one of the Topswitch line of switching regs
for the job.
Quick look shows TOP244 as probably being suitable.
Does anyone have any better / cheaper suggestions for tackling this
job.
Cheers
Rob

FWIW, I would make a selection of one of the countless Chinese vendors
of switched-made power wallplug adaptors. It also circumvents CE / UL
etc issues in a convenient way - and pricewise you cannot beat it. The
power requirement you quote is very common.

--
- René

Hi there.
This is going to be incorporated into the product,.ie on the same pcb.

.