Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I designed a PWM control system for a switch mode regulator & would like to know how to calculate R1 & R2 which determine hysterisis
That is incorrect.For VoH the highest output of the comparator and VoL the lowest output of the comparator...
The trip point high is:
ViH=-VoL*R1/R2
and the trip point low is:
ViL=-VoH*R1/R2
That is incorrect.
The trip points are R1/(R1+R2) not R1/R2. For example if R1=R1 the trip point is 1/2 the output voltage not 1 times the output voltage.