S1102011A3PFPR中文资料-【太航半导体】(2022推荐)(今日/厂家)
随着工业4.、智能机器人、汽车电子等市场的兴起,电机驱动与控制领域市场潜力将会逐渐释放,电机控制器市场规模也将逐渐提升,电机的重要性再次引起了人们的关注。ADI公司亚太区电机与电源控制行业市场部经理于常涛认为,电机一直都非常重要。他以全球40%的能源都是被电机消耗的数据为例,说明了电机的重要性。他认为:“在不同应用领域,电机的类型也是各有不同。如果以工业自动化为例,PMSM(永磁同步马达)的应用越来越广泛,原因很简单,节能、高效,控制性能好。安全高效节能通讯,是我们看到在电机驱动与控制的普遍发展趋势,ADI作为半导体工业,也是从这几个方面来提供有差异化的解决方案的。而马达控制器对电机驱动的重要性不言而喻。
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依据DSP主流厂商产品的特点,可以预计未来DSP技术将向以下几个方面继续发展与更新:一是DSP芯核集成度越来越高,通过缩小DSP芯片尺寸,实现了DSP系统级的集成电路;二是为了面向复杂应用领域,可编程DSP芯片将成为未来主导;三是定点DSP仍占据主流,随着DSP定点运算器件成本的不断低,能耗越来越小的优势日渐明显,未来定点DSP芯片仍将是市场的主角。总体上来看,通过对多种计算类芯片全方位对比,计算类芯片经过几十年的发展,CPU不再一枝独秀,多种新应用领域对复杂计算产生强大需求,由此产生专注于图像处理的芯片GPU;可以灵活编程,大幅缩短开发周期的芯片FPGA;进行了定制设计优化,在特定应用场景下功耗及量产成本较低的ASIC芯片;
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RF电路布局要想降低寄生信号,需要RF工程师发挥创造性。记住以下这八条规则,不但有助于加速产品上市进程,而且还可提高工作日程的可预见性。流经所布线路的所有电流都有相等的回流。耦合策略固然很多,不过回流通常流经相邻的接地层或与信号线路并行布置的接地。在参考层继续时,所有耦合都仅限于传输线路,一切都非常正常。不过,如果信号线路从顶层切换至内部或底层时,回流也必须获得路径。图1就是一个实例。顶层信号线路电流下面紧挨着就是回流。当它转移到底层时,回流就通过附近的通孔。不过,如果附近没有用于回流的通孔时,回流就要通过近可用的接地通孔。更远的距离会产生电流环路,形成电感器。如果这种不必要的电流路径偏移,碰巧又同另一条线路交叉。