AM2634: Question regarding comparator DAC and ramp generator performance.

Matthew Triche

Part Number: AM2634

I'm currently researching the viability of the AM263x device for a peak current mode control application. However...I'm concerned with the sampling rate of the comparator DAC and the performance of the ramp generator. There does not appear to be a spec for this in the TRM or any datasheet.

What is the maximum sampling rate of the comparator DAC and ramp generator?

over 2 years ago

0 Mihira Madhava Bollapragada over 2 years ago

TI__Intellectual 2297 points

Hi Matthew,

To My Understanding, you are looking for hte CMPSS DAC- RampGenerator update rate / period. CMPSS DAC shadow to active value updates take place with every SYSCLK/ EMPWM_SYNC_PER signal as per selection.

the Ramp Generator behaviour can be referred at Section 7.4.3.5.2 from TRM [a block diagram from this section is pasted below for quick refernce]

0 Matthew Triche over 2 years ago in reply to Mihira Madhava Bollapragada

Prodigy 20 points

This is incredibly helpful! It explains all I need to know. Thank you.

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AM2634: Question regarding comparator DAC and ramp generator performance.