L9369

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Automotive IC for a specific application of electric parking braking

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Product overview

Description

The L9369 targets the specific application of electric parking braking, suitable for system configuration in cable-puller or Motor Gear Unit (MGU).

The cores are two H-bridge driver stages to drive 8 external FETs for the rear wheels brakes actuators. The stages are fully driven and configurable via SPI, also in PWM control mode and protected against overcurrent, with drain-source and gate-source voltages monitoring.

A synchronized motor voltages and currents acquisition, is performed via full differential amplifiers with programmable and precise gain and low offset and 10 ADC sigma-delta modulators.

Two configurable HS/LS stages are present with programmable output voltage to drive LED arrays, with feedforward regulation.

2 Motor Speed Sensor interfaces (MSS) are available to acquire position feedback from brake actuators (shared with Lamp driver stage and GPIO).

The set of the interfaces is completed by 4 GPIO (General Purpose I/O) pins and a button interface allows to manage specific customer requirements from Electronic parking braking (EPB) button console both in Normal and Sleep Mode.

  • All features

    • AEC-Q100 qualified
    • Functional safety concept for ISO26262 compliance
    • 4 High-side and Low-side gate pre-drivers for 8 external power NFETs
    • Overcurrent protection with programmable thresholds
    • Programmable and NFET independent thresholds for VDS monitoring
    • 10 integrated Fully differential amplifiers with low offset, very precise gain, and self-test
    • 10 separate ADC channels for digital processing of motor current and voltage measurement
    • 32-bits - 10 MHz SPI with CRC for internal setting, self-test and diagnostics
    • Full drive of external power NFETs down to 5.5 V battery input voltage
    • Monitoring on Main power supply and continuous BIST for internal regulators
    • Double Bandgap reference
    • 4 General Purpose I/O stages (GPIO)
    • Button Interface (9 configurable I/O pins) for monitoring and diagnostics in Normal and Sleep Mode.
    • 2 Motor Speed Sensors (MSS) interfaces to acquire speed information feedbacks via external Hall sensors.
    • System wake-up in Sleep Mode
    • Watchdog (configurable via SPI)

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STMicroelectronics - L9369

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9369-TR
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LQFP 64 10x10x1.4 mm Automotive Ecopack2

L9369-TR

Package:

LQFP 64 10x10x1.4 mm

Material Declaration**:

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Marketing Status

Active

Package

LQFP 64 10x10x1.4 mm

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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