L9369数据手册集成电路（IC）的线性稳压器控制器规格书PDF

描述 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.

特性 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)

简介

L9369属于集成电路（IC）的线性稳压器控制器。由制造生产的L9369稳压器 - 线性 + 开关此产品族中的产品用于构建执行 DC-DC 转换或电压调节功能的电路，采用的是开关模式和线性稳压器功能的组合。虽然具体的拓扑各不相同，但此类产品的主要目的是将开关模式技术的效率优势与线性稳压技术的低噪声特性结合在一起。