The L9370 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.
- 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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Product Specifications (1)
|Resource title||Latest update|
|26 Sep 2020||
26 Sep 2020
Application Notes (1)
|Resource title||Latest update|
|19 Nov 2019||
19 Nov 2019
CAD/EDA Symbols, Footprints and Models
Quality and Reliability
|Part Number||Marketing Status||Package||Grade||RoHS Compliance Grade||Material Declaration**|
|LQFP 64 10x10x1.4||Automotive||Ecopack2||
Package:LQFP 64 10x10x1.4
LQFP 64 10x10x1.4
RoHS Compliance Grade
(**) 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.
Sample & Buy
|Part Number||Order from Distributors||Order from ST||Marketing Status||ECCN (US)||ECCN (EU)||Packing Type||Package||Temperature (°C)||Country of Origin||Budgetary Price (US$)*/Qty|
|L9370TR||No availability of distributors reported, please contact our sales office||
|EAR99||NEC||Tape And Reel||LQFP 64 10x10x1.4||-40||175||MALAYSIA|