Testing Waters New Design 100Vto12V 250-300W DC-DC Converter

[Stochastic]

I am in the process of designing a 250-300W converter. The input range will be from around 20V to 100V DC and the output will be somewhere around automotive 12V.
Basically, I want to be able to run any 12V electronics (lights, stereo, etc) on my new bike :



(Build thread coming for this bike)

I found one DC-DC converter that compares to the one I am building but lacks the wide range of input voltage mine will have: Sevcon http://www.electricmotorsport.com/ev-parts/dc-dc-converters/sevcon-72-80v-to-13-5v-300w-dc-dc-converter-w-enable-622-11202-ford-th-nk-upgrade.html

I should have a prototype PCB in my hands next week to begin characterizing/ debugging.

If all checks out I will do a run of them if there is an interest.

More info and pics to come.

Also, I’m designing some 10K thermistor circuits that can be connected to a can bus and displayed on a separate screen, or possibly switched into interfacing with the single CA-V3 thermistor input, or lastly have some indicator leds.

What do you guys think?

-Matthew

 

[amberwolf]

I am in the process of designing a 250-300W converter. The input range will be from around 20V to 100V DC and the output will be somewhere around automotive 12V.
Basically, I want to be able to run any 12V electronics (lights, stereo, etc) on my new bike

Sounds good to me--will it be "12V" or will it be "automotive 12V" (~14.5V)? (or switchable?)

Cuz the former wouldn't do as well with actual automotive or motorcycle lighting/gear, but the latter should would work fine, especially at that wattage (which comes out ot something like 17A at 250W, which would run even car headlights in halogen or maybe even HID).

I'm using a wallwart for some old battery charger, and it puts out around 15V at enough amps to run some varied LED lighting, but it won't run my halogen car headlight and and operate an old car horn without dimming hte lights too much. I still run the headlight and horn of 4s EIG NMC cuz no DC-DC or wallwart I've tried has yet to give enough current (or could give the current but only if the load is applied gradually)....

Unfortunatley I'm not in the market to buy one, but it'd be nice to know there was one out there that could do it if I could afford it.