作为汽车发动机冷却系统的重要构成部分之一,的作用是通过对冷却液进行加压,保证其在冷却系统中循环流动,来加速热量的散发。目前开始采用直流无刷电机,寿命长,可24小时持续工作。
本文引用地址:品佳集团推出基于ON LV8907UW的解决方案。LV8907UW是一个三相,无传感器(Sensor - less)无刷直流马达控制芯片。三相控制是基于侦测马达反电动势(BEMF)过零点的方波/梯形波控制方式,该芯片的软切换技术可达到梯形波或类正弦波电流波形,进一步降低电磁噪声。可有效缩短客户的开发周期,主要用在以下几个方面:
GUI调试界面:
►场景应用图
►产品实体图
►展示板照片
►方案方块图
►核心技术优势
(1)AEC−Q100 Qualified and PPAP Capable.
(2)Operating Junction Temperature Up to 175°C.
(3)Embedded Proprietary Sensor−less Trapezoidal and Pseudo−sinusoidal Commutation.
(4)Two−stage Charge Pump for Continuous 100% Duty Cycle Operation
(5)Supports Open−loop as well as Closed−loop Speed Control
►方案规格
(1)输入电压:5.5V - 20V
(2)支持Lin Bus
(3)驱动方式:梯形波控制
(4)Package:48-pin SQFP (7mm x 7mm)
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