Step up DC-DC 6 or 12V to over 300 V

[BMWTouring]

Is there a solution to step up from 5V DC to 300V? Or 12V to 300V (DC)?

I found something on this forum as Flyback Inverters... I want to use it to power my CDI.

 

[WimRFP]

You can convert almost every voltage to 300VDC, but the complexity depends on many parameters (power requirements, short circuit behavior, tolerance, etc).

 

[leo_o2]

You can use boost circuit. However, it is better to use 2 or 3 stages.

 

[Orson Cart]

Best bet is a push pull converter with transformer - bridge rectified secondary to get the 300V, 50 watts at 300V is 10 amps from 5V - don't forget...

 

[BMWTouring]

Ok. Is there a schema? I need to have enough power. This because the ignition reeds the 300v. The bobine fries it up....

 

[leo_o2]

How about the output current requirement?

 

[BMWTouring]

Just like a conventional ignition from a moped...

 

[mtwieg]

Are you sure you actually need 300VDC for ignition? I thought that usually you just deliver high voltage pulses, which can be provided from a lower voltage DC source with a step up transformer.

 

[BMWTouring]

Oke that sounds simple For me it is not i guess 8-O

SportDevices. CDI Programmable Digital Ignition.

I found this. But the most of the parts are not defined. Is the 4:50 coil an own winded coil?? How do I do that? Or is this for sale?

 

[WimRFP]

Just like a conventional ignition from a moped...

Leo_o2 asked you a question regarding current, as this has large influence on the topology and the design itself.

Do you think that your reply does help him to help you?

 

[BMWTouring]

Maybe I did not understand the question right? As a Dutchman my English should be good, but I could have misinterpreted the question.

I think it should be a DC. input current is around 80 uA?