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[原创] ST L99UDL01汽车通用门锁解决方案

关键词:汽车电子 汽车门锁 AEC-Q100 L99UDL01

时间:2020-05-26 13:18:49       来源:中电网

ST公司的L99UDL01是汽车通用门锁集成电路,有六个输出的多个半桥集成电路,是PWM可配置和电流稳流的,对于更高电流节点有多达两个外部可配置的半桥.诊断功能包括开路,对电池短路,对地短路以及通过10位电流反馈的负载完整性.L99UDL01满足AEC-Q100汽车规范,PWM电流调整高达25kHz,4MHz 24位SPI接口用来控制和诊断,输出具有高度安全性,热告警和关断保护,采用外接N沟MOSFET进行反向电池保护,主要用在汽车中央门锁系统的驱动门锁激励器.本文介绍了L99UDL01主要特性,框图,典型应用案例和评估板EVAL-L99UDL01主要特性,应用框图,主板和子板电路图,PCB设计图.

The L99UDL01 is a multiple half-bridge IC with 6 integrated outputs that are PWM configurable and current regulated and up to two externally configured half bridges for higher current nodes. The level of diagnostics includes open load, short to battery, short to ground, and load integrity via 10 bit current feedback.

The L99UDL01 is commanded entirely by SPI using duration and current level commands.

L99UDL01主要特性:

AEC-Q100 qualified 
Six integrated fully protected 0.09  half bridges 
Integrated half bridges can be fully independent or paralleled up to three in parallel Two levels of standby
– Standby (SPI initiated)
– Sleep (VDD=0 V) 
Very low current consumption in standby
– Only wake-up circuit active 
High level of programmability
– On-time duration
– Directi..

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