MPL-B330P-MJ74AA
由于TEC制冷和发热的速率和电流的大小有关。为了快速升温一般几个帕尔贴级联,此时需要高于能够承受10A的电流驱动电路。传统的TEC控制电路使用分立元件搭建H桥驱动,如图3所示,这种方案设计复杂,尺寸大,但是能够承受大电流。高度集成节省布板空间和成本。
TI现推出DRV824X-Q1系列的高集成度直流电机驱动方案,其采用BiCMOS高功率工艺技术,可提供出色的功率处理和热性能,该系列引脚兼容,一旦完成一个设计,容易扩展到这个系列其他的料号。以DRV8245-Q1为例,该器件作为TEC的H桥控制芯片具有以下优势。
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