[原创] Infineon TLE984x系列ARM MCU汽车马达控制方案

Infineon公司的TLE9842-2QX是TLE984x系列中一员,集成了32位ARM® Cortex® M0 MCU核,继电器驱动器,高边开关,LIN收发器和能工作在汽车电池的电源系统.时钟高达40MHz,具有单周期的乘法器,集成了40KB闪存,4KB EEPROM,768B 100次可编存储器(100TP),2KB RAM以及引导ROM,工作电压3.0 V到 28 V,工作温度-40℃ 到150℃,主要用在汽车窗提升,汽车天窗,雨刷,泵马达控制,风扇马达控制等.本文介绍了TLE9842-2QX主要特性,功能框图,简化应用框图及所用外接元件表以及TLE984x系列评估板主要特性,框图,电路图,材料清单和PCB设计图.

TLE9842-2QX is a part of the TLE984x product family. The TLE984x product family integrates an ARM® Cortex® M0 microcontroller core along with relay drivers, high side switches, LIN transceiver and a power supply system that enables the device to operate at the vehicle battery level. The TLE984x family offers scalability in terms of Flash memory sizes ranging from 36kB to 64kB with pin-compatible devices.

The TLE984x family was specifically designed to fit to a wide range of LIN-slave applications where a small package form factor and a minimum number of external components are essential. The TLE984x product family is offered in a leadless VQFN-48 package to save board space.

TLE9842-2QX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
– 40 KB Flash (including EEPROM)
– 4 KB EEPROM (emulated in Flash)
– 768 bytes 100 Time Programmable Memory (100TP)
– 2 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
• 10 General-purpose I/O Ports (GPIO)
• 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)
• 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℃ up to 150℃
• Package VQFN-48-31 with LTI feature
• Green package (RoHS compliant)
• AEC Qualified

TLE9842-2QX目标应用:

Window Lift
Sunroof
Wiper
Fan/Blower Motor Control
Pump Motor Control.
LIN addressed Relay Motor Applications


图1.TLE9842-2QX框图

图2.TLE9842-2QX简化应用框图
图2应用框图的外接元件表:


TLE984x系列评估板

The TLE984x Evaluation Board offers complete evaluation of all functions and peripherals of the TLE984x product family.This board is designed to provide a fast and easy start of evaluation, for Infineons embedded Power TLE984xdevice family. Initialy, the evaluation board brings several interfaces and interconnections.

The TLE984x device is placed in the center of the PCB. A socket provides the possibility to test and evaluate all ICsout of the TLE984x device family. Every pin of the IC is connectable via rows of pinheader. The board is protectedagainst reverse polarity of input voltage supply. A bidirectional relay can be connected to the integrated lowsideswitches, optionaly. In addition to that, a scew-connector is placed near the relay to contact and drive a DCmotor(example: window lift motor).

The evaluationboard provides an on board debugger. It provides a SWDDebugconnection and a virtual COM port for serial UART communication.Highside and Lowside switches and VDDEXT are connectable via 4mm standard laboratory wires.

The High-Voltage-Monitor pins can be triggered with dedicated pushbuttons.For analog input values a potentiometer is connected to PIN P2.2.
The LIN connection is able to be configured to master and slave mode.

TLE984x系列评估板目标应用:

Motor Control & Drives


图2.TLE984x系列评估板外形图

图3.TLE984x系列评估板框图

图4.TLE984x系列评估板电路图(1)

图5.TLE984x系列评估板电路图(2)
TLE984x系列评估板材料清单(BOM):



图6.TLE984x系列评估板PCB元件布局图

图7.TLE984x系列评估板PCB设计合成图
详情请见:
https://www.infineon.com/dgdl/Infineon-TLE9842-2QX-DS-v01_00-EN.pdf?fileId=5546d46259d9a4bf015a84aabc5f7511
和https://www.infineon.com/dgdl/Infineon-TLE984x_Evalboard-UM-v01_00-EN.pdf?fileId=5546d4625696ed760156b1cd7d263f22
Infineon-TLE9842-2QX-DS-v01_00-EN.pdf
Infineon-TLE984x_Evalboard-UM-v01_00-EN.pdf

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