特征
AEC-Q100合格
符合ISO26262的功能安全概念
4个高侧和低侧栅极预驱动器，用于8个外部电源NFET
具有可编程阈值的过电流保护
VDS监控的可编程和NFET独立阈值
10个集成全差分放大器，具有低偏移、非常精确的增益和自检功能
10个单独的ADC通道，用于电机电流和电压测量的数字处理
32位10 MHz SPI，带CRC，用于内部设置、自检和诊断
将外部电源NFET的全驱动电压降至5.5 V电池输入电压
监控主电源和内部调节器的连续BIST
双带隙基准
4个通用I/O级（GPIO）
按钮接口（9个可配置I/O引脚），用于在正常和睡眠模式下进行监控和诊断
2个电机速度传感器（MSS）接口，通过外部霍尔传感器获取速度信息反馈。
睡眠模式下的系统唤醒
看门狗（可通过SPI配置）
描述
L9369针对电子驻车制动的具体应用，适用于电缆拉拔器或电机齿轮机构（MGU）的系统配置。核心是两个H桥驱动器级，用于驱动后轮制动器执行器的8个外部FET。这些级通过SPI完全驱动和可配置，也处于PWM控制模式，并具有过电流保护，并具有磁源和栅极源电压监控功能。同步电机电压和电流采集通过全差分放大器执行，该放大器具有可编程且精确的增益和低偏移以及10 ADC sigma-delta调制器。两个可配置的HS/LS级具有可编程输出电压，用于驱动LED阵列，并具有前馈调节。2个电机速度传感器接口（MSS）可用于获取制动执行器的位置反馈（与灯驱动级和GPIO共享）。这套接口由4个GPIO（通用I/O）引脚完成，一个按钮接口允许在正常和睡眠模式下从电子驻车制动（EPB）按钮控制台管理特定的客户需求。
Automotive IC for a specific application of electric parking braking
Features
AEC-Q100 qualified
Functional safety concept for ISO26262 compliance
4 High-side and Low-side gate pre-drivers for 8external 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)
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 drainsource 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).
