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  • Direct fuel injection ASIC for automotive applications

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    To drive the solenoid coil of a fuel injection unit found in modern car engines, we designed a high-voltage ASIC. The fuel injection unit needs both  timing and voltage programmability to optimally control the combustion process of the engine. The ASIC contains over-current and over-temperature protection and reliable-injector diagnosis (valid bit). It is designed in an OnSemi I2T100 technology qualified for automotive applications.

    Features:

     

    • Voltage 65V boosted
    • Currents of up to 25A (offchip driver) with 0.5% precision    
    • Timing of 126usec to 2000usec with 0.5% precision
    • Power supply system, diagnosis and protection features
    • I2T100 technology (0.7um CMOS with HV extensions)
    • Temperature range of -40°C to 125°C