Sold/Expired WTB : step-up converter, input 3V, output +1W

[Erasmus]

Hi!

I'm going to upgrade someone's 2D cell flashlight. I'm going to replace the dim incandescent bulb by a Cree XR-E (plus McR reflector plus custom heatsink). I'm still looking for a step-up converter with an output of around 1 watt or upto 2 watt. Let me know what you have and a price including priority shipping to Belgium. Thank you!

 

[goldserve]

I can build a simplified piglet with no micro-controller. Single level, buck/boost output at around 350ma/500ma/750ma/850ma

$18 + $3 shipping.

 

[Erasmus]

I can build a simplified piglet with no micro-controller. Single level, buck/boost output at around 350ma/500ma/750ma/850ma

$18 + $3 shipping.

Interesting! Any efficiency rates or runtime plots available? Minimum and maximum V_in?

 

[BigBoy]

I am looking for a reasonably priced 2.4 v ( 2 x NIMH ) input that will drive a SSC P4 at 1 amp. Any chance a piglet will do that?

 

[goldserve]

BigBoy, the converter is not efficient at driving such high currents. So no, it iwll not do that.

Erasmus,
@ 350ma, the low current is nice and efficient for the driver. Vmin should be around 2.4V and Vmax is 5.5V. AT 3.6V input, you get higher 85+ efficiencies. 3V should not differ too much. Estimate worst case 85% efficiency.

 

[ace0001a]

Sandwich Shoppe has a BadBoy NexGen 1000:
http://theledguy.chainreactionweb.com/product_info.php?cPath=48_49_61&products_id=730

But I don't know the shipping costs to Europe...