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.
Feature
- AEC-Q100qualified
- FunctionalsafetyconceptforISO26262compliance
- 4High-sideandLow-sidegatepre-driversfor8externalpowerNFETs
- Overcurrentprotectionwithprogrammablethresholds
- ProgrammableandNFETindependentthresholdsforVDSmonitoring
- 10integratedFullydifferentialamplifierswithlowoffset,veryprecisegain,andself-test
- 10separateADCchannelsfordigitalprocessingofmotorcurrentandvoltagemeasurement
- 32-bits-10MHzSPIwithCRCforinternalsetting,self-testanddiagnostics
