infineon 公司的TLE 8444SL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,反相和同相输入以淘汰MC的毗连数量,睡眠模式的功耗很低,不到5uA,3.3V/5V兼容输入,具有短路,超温掩护以及内置诊断特点如过压和欠压锁住,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.本京电港论坛文章先容TLE 8444SL主要特点, 方框架图, 短路掩护和开路检测简化电路原理图纸, 误差标识产生电路原理图纸, 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 based 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线路板-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主要特点: • 4 Half-Bridge Power Outputs (1.3Ù RDS(ON)MAX @ Tj=150°C) • Minimum Overcurrent Shutdown at 0.9A • Simple parallel interface control of Half-Bridge Outputs • Inverted and Non-inverted Inputs to minimize number of microcontroller connections • Very low current consumption in sleep mode (max. 5μA) • Error Flag Diagnosis • Open Load Diagnosis in ON-state for all outputs • Outputs protected against overcurrent • Over temperature protection with hysteresis • Over and Under voltage lockout • 3.3V / 5V compatible inputs with hysteresis • No crossover current • Internal freewheeling diodes • Thermally enhanced package (fused leads) • Green Product (RoHS compliant) • AEC Qualified TLE 8444SL目标应用: • Unipolar or Bipolar Loads • Stepper Motors (e.g. Idle Speed Control) • DC brush Motors 详情请复制打开此衔接地址: |