Hi. I need to make an ignition coil driver. I used a bjt transistor and worked ok for few seconds before overheating and forced me to disconnect it. I saw on internet that Igbt is the most common manufacturers choice for that kind of applications. Has anyone done the same project and got decent results? I want to know if its possible to run an ignition coil using only one transistor without overheating risk.
Here you can see my first try with bjt transistor for few seconds.
Google IS your friend.......there are plenty examples for IGBT drive circuits , you need a HighVoltage (3-400 volt) HighCurrent IGBT (10 amp) .
Many are available for exactly this purpose.....BIP373 is the easy to use without many extra components to drive.
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Most of the coils these days are capacitive discharge, so if you connect them as a kettering system you'll cook the guts out of both the driver and the coil itself.
I have built/modified/ hacked many of these in the past and the best/cheapest/least problem way is to get a controller to drive the coil.
Most can be had for less than $10.00 and the type depends on how you intend to use it and what you have at hand. i.e. there is a 4 pin 12v dc unit and also, if running from the power coils on a motorcycle magneto, 300-400v input units.