Anyone want a driver with 4-12V in and 3A out

[boscoj]

with 96% efficient?

i think I may have something here . . .

 

[jmgallego]

I may be interested, what do you have in mind?

96% efficient? That sounds interesting.

 

[boscoj]

can't really say too much at this point but I have a buddy with access to >5000 lot units . . .

we're gonna start testing 445nm as soon as my modules and LPM comes in . . .

96% as is but then we're gonna slap a pot on it unless you want to run it native . . .

I may be interested, what do you have in mind?

96% efficient? That sounds interesting.

 

[Toke]

It sounds like a LED flashlight driver, and the 96% sounds unusual.

 

[Coherent Light]

with 96% efficient?

i think I may have something here . . .

Keep Me in the loop, because it sounds promising.

 

[jmgallego]

Any updates?

 

[boscoj]

yeah, he blew up my LPM testing the first unit . . . doof . . .

and we had to switch to a 10A unit because the other unit has been discontinued . . .

Any updates?

 

[snypr]

Let me know....

 

[jmgallego]

yeah, he blew up my LPM testing the first unit . . . doof . . .

and we had to switch to a 10A unit because the other unit has been discontinued . . .

Blew it up??? How? :can:

 

[Benm]

Lets see some schematics and builds then. >90% efficiency is good, but not unheard of from properly designed switchmode voltage or current sources.

The problem is not achieving such efficiencies, but its achieving them in compact form factors. When you are at liberty to over-design inductors, use fast diodes and proper buffer caps, its perfectly feasible - the question is how small you can get it if you must.

 

[snypr]

anymore updates on this?

 

[boscoj]

he burned the sensor, sent Jerry a pic and said the sensor needed to be recoated and callibrated.

Blew it up??? How? :can:

 

[boscoj]

no not really, the rep has been on vacation and we can't get the engineering samples we want.

I did find some cool heatsinks and tiny 5v fans.

The heatsinks look like they would be good on a flexdrive . . .

anymore updates on this?

 

[boscoj]

what output amperage range would you be interested in?

max output voltage would be 6 with a max amperage of 6

and the efficiency has dropped to 93% apparently but it looks pretty efficient with 12V in and 5V out

anymore updates on this?

 

[bobhaha]

Price estimates? Stability? Do you have access to a CRO to test the output of this driver? Sounds promissing, let us know if any updates are available!

 

[boscoj]

CRO = Constant Resistance Output?/something? Yes we can test constant resistance dynamic loads . . .

We did some input threshold tests and found that with a 1.5A load that the module remains stable as long as the input voltage is 5.0V or above. If the voltage drops below 5.0V, then the output decays proportionately.

Looks like it will be quite a bit larger than a flexdrive but will handle input voltage from 4.5-14 and output whatever you want 6A+ provided you have the input.

Price estimates? Stability? Do you have access to a CRO to test the output of this driver? Sounds promissing, let us know if any updates are available!