I am using Texas Instrument SG3524 PWM controller for 400Khz but I am getting constant output and not pulse (100% duty). Someone please tell where I am doing wrong or can share the circuit.
Trouble shooting from 1/2 way around the world is hard. You must give much more information.I am using 5K pot for Rt and 1nF for Ct.
I think not. See picture below. The block "T" will keep duty cycle below 50%. (only one output can be on at a time) If you connect COL 1 and COL 2 together than yes you can get 90%.but only 75% to 95%.