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IGBT ignition coil driver

Aeronuts

Oct 7, 2014
1
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Oct 7, 2014
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Since the PIC is a microcontroller which gives 0 and 1 logics, I suggest to put a non-invertering hex buffer and using Logic Level IGBT. The choice of logic level IGBT so that its lesser parts count to just drive the ignition coil. Another approached I think was to use a optoisolator before feeding the logic signal to the IGBT

-- Just my opinion sir.

Jay - Aeronuts
 

Bluejets

Oct 5, 2014
6,921
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Oct 5, 2014
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6,921
Try a 100R and a 5V6 zener to ground on your 5v supply to chip and hall effect.
Also a 0.01uf on the supply terminals of the hall effect right on the base of the device.
 

Nick1

Jan 17, 2024
1
Joined
Jan 17, 2024
Messages
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Use a V3040 IGBT it's designed for the job, logic gate, protection zeners built in etc etc.
You can get them in TO220 if you wish.
You'll need to put a small time delay (say 0.5ms) in when the coil fires to inhibit the micro's
input from picking up the large splash you get with switching an ignition coil. If it's an interrupt
just disable interrupts for 500us as you trigger the coil.
Nick
 
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