5744p min frequency

[fullmoon]

Hello
You are using an nxp 5744P MCU.
I'm currently trying to drive pwm switching to 2kHZ, but it's not working
It runs at 2.5kHZ, but is the minimum pwm frequency of 5744P 2.5kHZ?
Thank you.

[petervlna]

Hello,

I expect that you face this issue:

https://community.nxp.com/t5/MPC5xxx/PWM-frequency-calculation/td-p/1864192

You could lower the source clock by divider at AUX_0

petervlna_0-1724138437279.png

But better is to lower it directly in FlexPWM so you wont lower accuracy of other modules running form MOTC.

2.45kHz ->  160MHz/2^16 = 2.45 kHz (when PRSC is off)

set the PRSC to /2 and you can go to the 1.2kHz

petervlna_0-1724138684484.png

Best regards,

Peter

[fullmoon]

Hello
Yes, it is currently in progress with 160MHZ.
Nevertheless, the PWM set to 2kHZ comes out to 2.4kHZ, and if you send out half the duty, it comes out to 60% duty.
Please save me

[petervlna]

Hello,

I have edited my original post.

Best regards,

Peter