Driving Power Mosfets for DC to DC Converter

[Thomas Sabu]

Hi,

Is it possible to generate Complimentary PWM in nrF840? Do i need to use the PWM in Individual mode?

My application is a synchronous buck converter

thanks,

thomas

[Jared]

Hi,

Thomas Sabu said:

Is it possible to generate Complimentary PWM in nrF840? Do i need to use the PWM in Individual mode?

What do you mean by complimentary? The nRF52840 has 4 Pulse width modulation units.

regards

Jared 

[Thomas Sabu]

By Complimentary, i meant two pulses of opposite polarity.

And is it possible to give a dead time ?

[Jared]

Hi,

Regarding Dead time see this post.

The polarity of the output from the PWM can be controlled by setting the 15th bit of the 16 bit DECODER register in the PWM peripheral. You can have multiple channels that have different polarity at the same time. Read the documentation on the PWM peripheral here. 

 

 regards

Jared