多通道并联后,过电流保护需要留出多少裕度?并联后每个通道的电流一致性如何?你有任何相关的文件或数据解释吗?
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Hello Tonyx wu,
每个MOSFET上的限定电流如下定义,总电流不超过6A.
需要并联的通道数量,请参考芯片数据手册“9.2.2.2.1 H-Bridge Requirements for Parallel Operation”部分内容。
并联时,各输出通道电流差异主要与RDS(ON)相关。
DRV89xx-Q1 Automotive Multi-Channel Half-Bridge Drivers with Advanced Diagnostics datasheet (Rev. C)