nice little switcher

On Thu, 26 Dec 2019 04:45:21 -0800 (PST), klaus.kragelund@gmail.com
wrote:

>4000 USD is your sales price, right? 
>
>With 5x mark up you are at 80
>
>Production CTP is probably 10
>
>So a 10 USD switcher would be 14% of your Vom
>
>Cheers 
>
>Klaus 

That 14% number is mostly meaningless. The absolute dollars are in the
noise. Besides, just one of the other parts costs $220. Our total BOM
is maybe $400 or so.

If the rev A board has jitter from EMI or ground loops or something,
it might cost $20K to spin the rev B board. The LTC things are really
quiet.


-- 

John Larkin   Highland Technology, Inc   trk

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

On Thu, 26 Dec 2019 01:08:24 -0800 (PST), klaus.kragelund@gmail.com
wrote:

>First hit on Digikey:
>
>https://www.digikey.com/product-detail/en/microchip-technology/MIC28513-2YFL-T5/576-4885-1-ND/5216764
>
>Add an inductor and cap and your set

That's a single buck for $2, without inductors. The LTC thing is a
dual with inductors for about $10. I'm not seeing a 10:1 cost
advantage here. Absolutely a loser on board area and probably EMI.

>
>For you 10 dollar switcher we do a complete motor control including RFI filter, PCB, power supplies, oh and also the motor and all pump hydraulics and mechatronics

Different market, obviously. What's your selling price/cost ratio?


-- 

John Larkin   Highland Technology, Inc   trk

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

It might be just a 5 to 1 improvement, but the one I found was a turn key solution, no fiddling needed

If you do your own cost is a lot lower but as you stated dev cost is then significant

Standard industry mark up is 5 to 1 for a sound company