Infineon公司的TLE8444SL是四路半桥马达驱动IC,四路半桥功率输出,导通电阻小于1.3欧姆,并行接口控制半桥输出,反相和同相输入以减少MC的连接数量,睡眠模式的功耗很低,不到5uA,3.3V/5V兼容输入,具有短路,超温保护以及内置诊断特性如过压和欠压锁住,开路检测等,目标应用在单极或双极负载,步进马达以及DC有刷马达.本文介绍TLE8444SL主要特性,方框图,短路保护和开路检测简化电路图,误差标识产生电路图,DC有刷马达负载应用电路以及双极步
Infine
on公司的
TLE8444
SL是四路半桥马达驱动
IC,四路半桥
功率输出,导通电阻小于1.3欧姆,并行接口控制半桥输出,反相和同相输入以减少
MC的连接数量,睡眠模式的功耗很低,不到5uA,3.3V/5V兼容输入,具有短路,超温保护以及内置诊断特性如过压和欠压锁住,开路检测等, 目标应用在单极或双极负载,步进马达以及DC有刷马达.本文介绍TLE 8444SL主要特性, 方框图, 短路保护和开路检测简化电路图, 误差标识产生电路图, DC有刷马达负载应用电路以及双极步进马达负载应用电路.
The TLE 8444SL is a protected Quad-Half-Bridge-IC targeted towards automotive and industrial motion control applications. It is a monolithic die b
ased on Infineon’s smart mixed technology SPT which combines bipolar and CMOS control circuitry with DMOS power devices.
DC-Motors can be driven in forward (cw), reverse (ccw), brake and high impedance modes where as Stepper-Motors can be driven in No-Current, negative / positive output current modes. These various modes can easily be achieved via standard parallel interface of the device to a microcontroller.
The PG-
SSOP-
24-7 package is advantageous as it saves PCB-board space and costs. The integrated short circuit and over-temperature protection as well as it’s built-in diagnosis features such as over- and under voltage-lockout and open load detection improves system reliability and performance.
TLE 8444SL主要特性:
• 4 Half-Bridge Power Outputs (1.3Ù RDS(ON)
MAX@ Tj=
150°C)
• Mini
mum Overcurrent Shutdown at 0.9A