Infineon TLE8201汽车门控制驱动方案

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Infineon公司的TLE8201是汽车门控制驱动模块，包括了驱动前门负载中所有的功率级如中心锁，死锁或反射镜折叠，反射镜位置，镜面除霜和5W或10W转向信号灯，礼貌／告警，或控制面板照明．TLE8201还具有短路保护，超温保护以及诊断等功能.本文介绍了TLE8201的主要特性，方框图，双马达门锁应用案例和反射镜控制方案以及TLE8201R评估板主要特性和电路图．

Door Module Power IC TLE 8201R
The TLE 8201R is an Application Specific Standard Product for automotive door-module
applications. It includes all the power stages necessary to drive the loads in a typical front
door application, i.e. central lock, deadlock or mirror fold, mirror position, mirror defrost
and 5W or 10W lamps, e.g for turn signal, courtesy/warning or control panel illumination.
It is designed as a monolithic circuit in Infineons mixed technology SPT which combines
bipolar and CMOS control circuitry with DMOS power devices.
Short circuit and over-temperature protection and a detailed diagnosis are in line with the
safety requirements of automotive applications. The current sense output allows to
improve the total system performance. The standard SPI interface saves microcontroller
I/O lines while still giving flexible control of the power stages and a detailed diagnosis.
TLE8201主要特性：
Full bridge (150mohm) for main doorlock motor
Two half-bridges (400mohm) for deadbolt and mirror position motor or mirror fold motor
Two half-bridges (800m) for mirror position
High-side switch (100m) for mirror defrost
Four high-side switches (500m) for 5W and 10W lamps
Current sense analog output with multiplex
All outputs with short circuit protection and diagnosis
Over-temperature protection with warning
Open load diagnosis for all outputs
Charge pump-Output for n-channel MOS-FET reverse-polarity protection
Very low current consumption in sleep mode
Standard 16-bit SPI for control and diagnosis
Over-and Undervoltage Lockout
Power-SO package with full-size heatslug for excellent low thermal resistance



图１．TLE8201方框图



图２．采用TLE8201的双马达门锁应用案例




图２．采用TLE8201的反射镜控制方案
TLE8201R评估板



TheTLE 8201R Evaluation Board is intended to provide a simple, easy to usetool for first application tests. It provides access to all in- andoutputs with standard 4mm jacks.
The SPI can be connected to theprinter-port of a PC. A PC-Software which emulates the SPI signals atthe printer port is also included in the demo-kit.
Besides the TLE8201R Chip itself, the board also contains a 5V regulator and passivecomponents, e.g. for power supply decoupling. Some functions of the TLE8201R are available via switches on the board.
The TLE 8201R is anApplication Specific Standard Product (ASSP) for automotive door-moduleapplications. It includes all the power stages necessary to drive theloads in a typical front door application, i.e. central lock, deadlockor mirror fold, mirror position, mirror defrost and up to four 5W lamps.

TLE8201R评估板主要特性：
Full bridge (150mΩ) for main doorlock motor
Two half-bridges (400mΩ) for deadbolt and mirror position motor or mirror fold motor
Two half-bridges (800mΩ) for mirror position
High-side switch (100mΩ) for mirror defrost
Four high-side switches (500mΩ) for 5W and 10W lamps
Analog current sense output and build-in multiplexer to reduce ADC-channels of the micro-controller
All outputs with short circuit protection and diagnosis


图3.TLE8201R评估板电路图