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你好，请问DRV593的驱动方式是PWM输出么？
如果驱动多个TEC，应该采用并联还是串联的方式呢？593的驱动电流最大好像只能达到2A。
还有，593和594的区别在哪里呢？
如果您愿意采用PWM驱动模式， DRV8412是一颗性价比较高的方案：电流高达3A,并同时可以驱动四颗TEC, 或并联使用电流高达6~7A. 你可以打开以下链接找到所有的有关资料。
focus-webapps.ti.com.cn/.../searchsite.tsp
DRV593/4是PWM输出。593/594的区别是；
The PWM switching frequency may be set to 500 kHz
or 100 kHz depending on system requirements. To
eliminate external components, the gain is fixed at
2.3 V/V for the DRV593. For the DRV594, the gain is
fixed at 14.5 V/V.
