Other Parts Discussed in Thread: TINA-TI
Tool/software:
Hi, I am trying to simulate UC1901 ij TINA-TI in open loop without PWM cont and conv. Not able to understand why driver output voltage ( single) is not varying by changingfedback signal value. I am using internal reference of 1.5 volt and changing feedback one by one from 1.45 to 1.3 but driver voltage remains same. WHy? isnt it supposed to change so as to change pwm signals and regulate output. 
