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.
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-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)
? 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
