L9370
Automotive IC for a specific application of electric parking braking
Data brief
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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LQFP64 (10x10x1.4mm)
Description
The L9370 targets the specific application of
electric parking braking, suitable for system
configuration in cable-puller or Motor Gear Unit
Features
(MGU).
AEC-Q100 qualified
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
Functional safety concept for ISO26262
compliance
4 High-side and Low-side gate pre-drivers for 8
external power NFETs
and protected against overcurrent, with drain-
Overcurrent protection with programmable
source and gate-source voltages monitoring.
thresholds
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.
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
Two configurable HS/LS stages are present with
programmable output voltage to drive LED arrays,
with feedforward regulation.
32-bits - 10 MHz SPI with CRC for internal
2 Motor Speed Sensor interfaces (MSS) are
available to acquire position feedback from brake
actuators (shared with Lamp driver stage and
GPIO).
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
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.
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.
Table 1. Device summary
Order code
Package
Packing
L9370-TR
LQFP64
Tape & Reel
January 2019
DB3818 Rev 1
1/13
For further information contact your local STMicroelectronics sales office.
www.st.com