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DRV8305 电机启动后发烫

Other Parts Discussed in Thread: BOOSTXL-DRV8305EVM, DRV8305

自己DIY了一块DRV8305的驱动板,与TI的BOOSTXL-DRV8305EVM所不同的是更换了MOS管,在进行无刷直流电机驱动中,发现电机启动后,DRV8305发烫很明显,使用测温枪发现其温度最高可达80度左右,请教一下到底是什么原因所致呢?