- buck transient protection
- injector's led's moved to signal line
- add led's to ignition's signals
- buck out to 6-7V
- add linear 5V
- add 3V3 power
- add OLED disply
I'm not sure I understand your question. Standard coils are almost always fired by grounding the coil (-) through the IGBT. Please look at the Ignition Coil section of the Wiki and try asking again.
I found in datasheet, MPXH6400A minimum supply voltage is 4.64V In future I I don't know what kind of sensor be connected to board. 5V for sensors seems be universal. But if only map sensor need 5V and other not, hmmm, need to change
One consideration to keep 5V signal shifting is to allow piggyback installations on current systems. If only 3V3 except for MAP, then an adapter board would be needed to accept 5V signals from OEM ECMs. Your decision.
This. It can be used with smart or standard coils, although using internal coil drivers (IRGB14C40L) may bring noise onto the board. Everything is a compromise.
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