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关于LED的多路PWM驱动芯片

Other Parts Discussed in Thread: LM3464A, LP55231, TPS61196

RT,我现在需要设计一块驱动16个LED的板子,要求这16个LED都能够以不同的PWM占空比发光,相互之间并不干扰,这两天我查了一下TI的常用LED驱动芯片,貌似并没有找到可以同时输出16路不同PWM的芯片,请问要如何解决这个问题呢?