L99SD01-E

STMICROELECTRONICS  L99SD01-E  芯片, 电感性负载驱动器, 14A, POWERSSO-36

The is an Integrated Solenoid Driver intended for driving inductive loads such as compressed natural gas CNG injectors. The inputs are CMOS-compatible. The diagnostic outputs CLAMP_FLAG and FAULT provide an indication of demagnetization mode and fault conditions, respectively. The integrated standard serial interface I²C allows to digitally set peak and holds current values and other injection parameters. It also provides detailed diagnostic information. The device should work with pre-programmed peak and hold current values when values are not set by external micro. All injection parameters can be changed during operating conditions and taken into account at the first injection rising edge after the end of communication. Diagnostic information is available in case of overcurrent, over-temperature, over-voltage and open-load.

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CMOS compatible input

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Integrated clamp structure - Switch S1 clamp voltage of 45V minimum

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Current sense amplifier with internal sense resistor

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S1 switch PWM operation above 10kHz

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I²C Standard interface for mode control and enhanced diagnostic

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Diagnostic output - Open drain fault detection

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Diagnostic output - Flag of clamp activation at the end of injection cycle

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Input for voltage monitoring and feedback

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Thermal shutdown and warning

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Overcurrent shutdown and diagnostic

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Under-voltage and over-voltage detection

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Open-load detection

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Up to 14A load current

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60mR Excitation switch S1

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60mR Recirculation switch S2