imxrt1052 eflexpwm 低频率输出

[ccc_clive]

AHB_CLK 600M，在不降频的情况下,IPG_CLK150M，怎么输出1hz的pwm波形。按照最大128细分，16bit比较器最小也只有150M/128/65535=17.88HZ，无法到1hz。输出频率从50khz到几hz变化的。不知该如何实现

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[Google translation]
imxrt1052 eflexpwm low frequency output

AHB_CLK 600M, IPG_CLK150M, how to output 1hz pwm waveform without reducing frequency. According to the maximum subdivision of 128, the minimum 16bit comparator is only 150M/128/65535=17.88HZ, which cannot reach 1hz. The output frequency varies from 50khz to several hz. Don't know how to implement it

Hi,

Thank you so much for your interest in our products and for using our community.

You can take as reference the following idea, you just needed to do the math for the desired frequencies.

Clocking the eFlexPWM with an External Clock Signal (EXT_CLK) on i.MX RT Series

You will see something like this:

Hope it helps you.

Have a nice day!