1.The periphery circuits of UC3875 is shown in figure 1.
2.From the datasheet of UC3875 , I know the duty cycle of pin C and D is complementary. If input voltage of pin NI is constant in one cycle，the output duty cycle of c and d is consistent.
However, If there is ripple from input voltage of pin NI in one cycle, the output duty cycle of c and d is not consistent.(the ripple of pin NI is hard to suppress) ,as figure 2 shows.
3.question：how to keep consistent for duty cycle of c and d？or Can you recommend a kind of new chip for me?
