Other Parts Discussed in Thread: LM5156
Is there a way to force the controller LM5155 to work in constant PWM mode and avoid getting to pulse skipping mode operation? On various units having the same design with LM5155 I am noticing some units where the controller works in pulse skipping mode and some units working in constant PWM mode, input and load condition is the same. Vin = 14V , Vout = 55V, Iout = 1A , Cout = 4400uF, Iin(limit) =3A, Lm = 10uH and Fsw = 1.8MHz. What could be tweaked in the design to ensure constant PWM operation? We are facing EMC issue when the controller enters the pulse skipping mode.