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Range of PWM Duty Cycle on BF50x

Question asked by mauri1106 on Jan 25, 2011
Latest reply on Jan 31, 2011 by mauri1106

Hello.

Reading the HW reference manual (rev 0.2) of the BF50x, I've found this phrase (page 14-15 or page 555 of the pdf document) about PWM duty cycle:

"Each duty cycle register range is from (–PWMTM/2 – PWMDT) to (+PWMTM/2 + PWMDT), which, by definition, is scaled such that a value of 0 represents a 50% PWM duty cycle."

This little confuse me because I understand that, in single-update mode, I can vary duty cycle from 50% to 100%: but if I need the whole range from 0% to 100%, how can I do?

 

In my application I have to drive an H-Bridge and I need to change each branch in the whole range from 0% to 100% and I would use (if possible) the single-update mode.

 

Thanks a lot for your help

Maurizio

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