原标题：TLE9845QX系列产品的汽车马达控制方案

　　Infineon公司的TLE9845QX系列产品是集成了32位ARM® Cortex® M0内核的继电器驱动芯片,MCU工作频率高达40MHz.器件在单个芯片上集成了通过继电器或PN MOSFET半桥来检测,控制和启动电机所需的所有功能,包括48KB闪存,4KB EEPROM,768B 100TP存储器,4KB RAM以及引导ROM,具有高集成度和高性价比.主要用在汽车的电机控制应用如车窗升降器,雨刮,汽车天窗,风扇和风机等.本文介绍了TLE9845QX主要特性,框图,电源管理单元框图,统控制单元-数字模块框图和Cortex-M0框图,以及TLE984x评估板主要特性,框图,电路图,材料清单,PCB元件布局图和设计图.

　　This highly integrated circuit contains analog and digital funcTIonal blocks. For system and interface control anembedded 32-Bit Cortex-M0 microcontroller is included. For internal and external power supply purposes, on-chiplow drop-out regulators are existent. An internal oscillator (no external components necessary) provides a costeffecTIve and suitable clock in parTIcular for LIN slave nodes. As communicaTIon interface, a LIN transceiver andseveral High Voltage Monitor Inputs with adjustable threshold and filters are available. Furthermore two High-Sides Switches (e.g. for driving LEDs or powering of switches), two low-side switches (e.g. for relays) and severalgeneral purpose input/outputs (GPIO) with pulse-width modulation (PWM) capabilities are available.

　　The Micro Controller Unit supervision and system protection including reset feature is controlled by aprogrammable window watchdog. A cyclic wake-up circuit, supply voltage supervision and integrated temperaturesensors are available on-chip.

　　All relevant modules offer power saving modes in order to support terminal 30 connected automotive applications.

　　A wake-up from the power saving mode is possible via a LIN bus message, via the monitoring inputs or repetitivewith a programmable time period (cyclic wake-up).

　　The integrated circuit is available in a package with 0.5 mm pitch and is designed to withstand the challengingconditions of automotive applications.

　　The TLE9845QX has several operational modes mainly to support low power consumption requirements.

　　TLE9845QX主要特性:

　　• 32-bit ARM Cortex-M0 Core

　　– up to 40 MHz clock frequency

　　– one clock per machine cycle architecture

　　– single cycle multiplier

　　• On-chip memory

　　– 48 KB Flash (including EEPROM)

　　– 4 KB EEPROM (emulated in Flash)

　　– 768 bytes 100 Time Programmable Memory (100TP)

　　– 4 KB RAM

　　– Boot ROM for startup firmware and Flash routines

　　• On-chip OSC

　　• 2 Low-Side Switches incl. PWM functionality, can be used e.g. as relay driver

　　• 2 High-Side Switches with cyclic sense option and PWM functionality, e.g. for supplying LEDs or switch panels(min. 150 mA)

　　• 5 High Voltage Monitor Input pins for wake-up and with cyclic sense with analog measurement option

　　• 6 Analog input Ports

　　• 10-Bit A/D Converter with 6 analog inputs + VBAT_SENSE + VS + 5 high voltage monitoring inputs

　　• 8-Bit A/D Converter with 7 inputs for voltage and temperature supervision

　　• Measurement unit with 12 channels together with the onboard 10-Bit A/D converter and data post processing

　　• 16-Bit timers - GPT12, Timer 2 and Timer 21

　　• Capture/compare unit for PWM signal generation (CCU6)

　　• 2 full duplex serial interfaces (UART1, UART2), UART1 with LIN support

　　• 2 synchronous serial channels (SSC1, SSC2)

　　• Usage as P/N-channel Power MOSFET driver (Half Bridge Application) supported by four additional differentialchannels in ADC1

　　• On-chip debug support via 2-wire SWD

　　• LIN Bootstrap loader to program the Flash via LIN (LIN BSL)

　　• 1 LIN 2.2 transceiver

　　• Single power supply from 3.0 V to 28 V

　　• Low-dropout voltage regulators (LDO)

　　• 5 V voltage supply VDDEXT for external loads (e.g. Hall-sensor)

　　• Core logic supply at 1.5 V

　　• Programmable window watchdog (WDT1) with independent on-chip clock source

　　• Power saving modes:

　　– Micro Controller Unit slow-down mode

　　– Sleep Mode with cyclic sense option

　　– Cyclic wake-up during Sleep Mode

　　– Stop Mode with cyclic sense option

　　• Power-on and undervoltage/brownout reset generator

　　• Overtemperature protection

　　• Short circuit protection for all voltage regulators and actuators (High Side, Low Side)

　　• Loss of clock detection with fail safe mode for power switches

　　• Temperature Range TJ: -40 °C up to 150 °C

　　• Package VQFN-48-31 with LTI feature

　　• Green package (RoHS compliant)

　　• AEC Qualified