Spark Performance Electronics
Peak and Hold Injector Driver
> 4 Channel Peak And Hold PH401
4 Channel Peak And Hold PH401
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SPTRONICS Peak & Hold Injector Driver module allows ECU’s that have a saturated injector drive circuit to trigger low impedance injectors PH401 contains
4 independent injector drive channels. Each channel supplies full battery voltage to a fuel injector for rapid current rise, in order to produce positive injector opening. When the injector is fully opened, the injector driver reduces the load current to required current and operates as a constant current source. This condition holds the injector open, and reduces system power dissipation.
PH401 supply the low impedance injectors with the full battery voltage for the specific time (injector fully opening time specified by the manufacture) to ensure the injectors is fully opened, then reduce the current to the programmed current by switching the supply voltage (PWM signal).