Freescale MC12XS3系列12V多路汽车智能灯控制方案

Freescale公司的MC12XS3系列是12V多路eXtreme高边控制开关,采用SPI控制,具有可编程的多段锁住的过流关断保护特性,工作电压6.0V到20V,8.0MHz 16位3.3V和5.0V SPI控制,智能过流关断,短路和超温保护,主要用于汽车,照明,汽车门,窗提升和座椅控制,引擎控制,工业设备和大功率LED照明.本文介绍了MC12XS3系列产品主要特性,以及MC10XS3412主要特性,框图,典型应用电路, 评估板KIT10XS3412EVBE主要特性和建立框图,电路图,材料清单和PCB元件布局图.

The eXtreme Switch Gen 3 12V devices are SPI-Controlled smart high side switches providing diagnostics for the switch, light source and wiring harness, as well as comprehensive fault management and control of the loads without complex software. The devices use a programmable multi-step latched overcurrent shutdown protection.

This technique is preferable to the current limit method because it minimizes the thermal stress within the device during an over-load condition, greatly reducing the junction temperature rise and vastly improving reliability. This family is packaged in a PQFN package and a SOICW-EP package. Its low Rdson and large integration enable savings in terms of module size, power dissipation and total system cost.

MC12XS3系列产品主要特性:

Operating voltage range of 6.0 V to 20 V with sleep current< 5.0 μA, extended mode from 4.0 V to 28 V..

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