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[原创] Infineon TLE9879单片三相马达驱动器解决方案

关键词:ARM Cortex M3汽车电子 马达驱动 BLDC TLE9879QXA40

时间:2019-11-12 11:27:30       来源:中电网

infineon公司的TLE9879QXA40是单片三相马达驱动器,集成了工业标准的ARM® Cortex® M3核,可以实现先进的马达控制算法如磁场定向控制(FOC).TLE9879包括六个全集成的NFET驱动器,通过外接功率NFET来驱动三相马达,电荷泵可以低电压工作,可编程电流和电流斜率控制具有优异的EMC性能.它的外设包括电流传感器,带有用于PWM控制的捕获和比较的同步逐次逼近ADC和16位计时器.此外还集成LIN收发器使得能和通用I/O的设备进行通信.它还包括片上线性电压稳压器给外部负载供电.高度集成的器件包含了模拟和数字功能区块,嵌入的32位微控制器(工作频率高达40MHz)用来系统和接口控制.片上低压降的稳压器用来给内部和外部供电.内部振荡器提供成本效益的时钟,特别适合于LIN通信.而LIN收发器用作通信接口.还集成了具有外接MOSFET的马达桥或BLDC马达桥的驱动级,具有PWM功能,保护特性和电荷泵特性,其10位SAR ADC实现高精度传感器测量,而8位ADC用来诊断测量.单电源5.5V-27V工作,工作温度Tj= -40℃到+150℃,具有AEC 认证,主要用在汽车马达驱动如泵和风扇.本文介绍了TLE9879QXA40主要特性,框图,系统控制单元-数字模块框图和Cortex-M3框图,原型平台(Arduino)的TLE9879 BLDC屏蔽板主要特性,框图,电路图,元件放置图,材料清单和PCB设计图.

The TLE9879QXA40 is a single chip 3-Phase motor driver that integrates the industry standard ARM® Cortex® M3core, enabling the implementation of advanced motor control algorithms such as field-oriented control.

It includes six fully integrated NFET drivers optimized to drive a 3-Phase motor via six external power NFETs, acharge pump enabling low voltage operation and programmable current along with current slope control foroptimized EMC behavior. Its peripheral set includes a current sensor, a successive approximation ADCsynchronized with the capture and compare unit for PWM control and 16-bit timers. A LIN transceiver is also integrated to enable communication to the device along with a number of general purpose I/Os. It includes anon-chip linear voltage regulator to supply external loads.

It is a highly integrated automotive qualified device enabling cost and space efficient solutions for mechatronicBLDC motor drive applications such as pumps and fans.

This highly integrated circuit contains analog and digital functional blocks. An embedded 32-bit microcontroller isavailable for system and interface control. On-chip, low-dropout regulators are provided for internal and externalpower supply. An internal oscillator provides a cost effective clock that is particularly well suited for LINcommunications. A LIN transceiver is available as a communication interface. Driver stages for a Motor Bridge orBLDC Motor Bridge with external MOSFET are integrated, featuring PWM capability, protection features and acharge pump for operation at low supply voltage. A 10-bit SAR ADC is implemented for high precision sensormeasurement. An 8-bit ADC is used for diagnostic measurements.

The Micro Controller Unit supervision and system protection (including a reset feature) is complemented 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 automotive applications connected to terminal30. A wake-up from power-save mode is possible via a LIN bus message, via the monitoring input or using aprogrammable time period (cyclic wake-up).Featuring LTI, the integrated circuit is available in a VQFN-48-31 package with 0.5 mm pitch, and is designed towithstand the severe conditions of automotive applications.

The TLE9879QXA40 has several operation modes mainly to support low power consumption requirements.

TLE9879QXA40主要特性:

• 32 bit ARM Cortex M3 Core
– up to 40 MHz clock frequency
– one clock per machine cycle architecture
• On-chip memory
– 128 kByteFlash including
– 4 kByte EEPROM (emulated in Flash)
– 512 Byte 100 Time Programmable Memory (100TP)
– 6 kByte RAM
– Boot ROM for startup firmware and Flash routines
• On-chip OSC and PLL for clock generation
– PLL loss-of-lock detection
• MOSFET driver including charge pump
• 10 general-purpose I/O Ports (GPIO)
• 5 analog inputs, 10-bit A/D Converter (ADC1)
• 16-bit timers - GPT12, Timer 2, Timer 21 and Timer 3
• Capture/compare unit for PWM signal generation (CCU6)
• 2 full duplex serial interfaces (UART) with LIN support (for UART1 only)
• 2 synchronous serial channels (SSC)
• On-chip debug support via 2-wire SWD
• 1 LIN 2.2 transceiver
• 1 high voltage monitoring input
• Single power supply from 5.5 V to 27 V
• Extended power supply voltage range from 3 V to 28 V
• Low-dropout voltage regulators (LDO)
• High speed operational amplifier for motor current sensing via shunt
• 5 V voltage supply 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
– MCU slow-down Mode
– Sleep Mode
– Stop Mode
– Cyclic wake-up Sleep Mode
• Power-on and undervoltage/brownout reset generator
• Overtemperature protection
• Short circuit protection
• Loss of clock detection with fail safe mode entry for low system power consumption
• Temperature Range Tj = -40 ℃ to +150 ℃
• Package VQFN-48 with LTI feature
• Green package (RoHS compliant)
• AEC qualified

图1.TLE9879QXA40框图

图2.系统控制单元-数字模块框图

图3.Cortex-M3框图

图4.TLE9879QXA40简化应用框图
应用框图外接元件表:


用于原型平台(Arduino)的无刷直流电机(BLDC)屏蔽板

This application note describes the BLDC Shield for Arduino equipped with the TLE9879QXA40, a single chip 3-Phase motor driver that integrates the industry standard ARM® Cortex® M3 core.

The BLDC Motor Control Shield with TLE9879QXA40 for Arduino Uno makes it easy to control and drive a BLDCmotor. It features an Infineon TLE9879QXA40, a single chip 3-Phase motor driver with integrated MOSFETs.

The shield can be controlled by a microcontroller via an SPI interface - here the Arduino Uno R3 is used asmaster. Both the shield and the Arduino board are connected via the pin headers.

Up to four shields can be stacked via the pin headers, to control up to four BLDC motors.

图5.多达4个BLDC屏蔽板外形图

图6.原型平台(Arduino)的TLE9879 BLDC屏蔽板概述图

TLE9879 BLDC屏蔽板主要特性:

• An Arduino Uno R3 connected to the shield can control a single chip 3-Phase motor driver via the SPIinterface
• BLDC motor control
- 5.5 V - 28 V normal operating input voltage
- 28 V - 40 V extended operating input voltage
• Possibility to stack up to four shields
• SPI interface for high configurability and detailed diagnosis
• Protections:
- overtemperature
- overcurrent
- undervoltage
- overvoltage
• Motor speed control

图7.TLE9879 BLDCArduino屏蔽板简化应用框图

图8.TLE9879 BLDC Arduino屏蔽板框图

图9.TLE9879 BLDC Arduino屏蔽板元件放置图

图10.TLE9879 BLDC Arduino屏蔽板电路图
TLE9879 BLDC Arduino屏蔽板材料清单:




图11.TLE9879 BLDC Arduino屏蔽板PCB顶层布局图
详情请见:


Infineon-BLDC_shield-UM-v01_00-EN.pdf
Infineon-TLE9879QXA40-DS-v01_00-EN.pdf

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