i working on the new project with viper06HS (115khz) -primary regulation .
i have a problem , output voltage 12 v on the second winding drop with increase current(connecting load)
when i used Light load the output is 12 (3mA) and when i start to increes the current (heavy load about 100mA)
the output voltage is drop to 8.5v
the feedback is from auxiliary winding (without optocoupler)
maybe the problem is from the feedback
and when this future is available in eDesignSuite ?
input :90-265 VAC
output : 12v up to 200mA
PRI (1-3)=1.6mH ±10%
PRI(1-3) = 120 turns
AUX(5-4) = 20 turns
SEC(9-6) = 15 turns
TURNS RATIO (1-3):(9-6) 8:1, ±1%
TURNS RATIO (1-3):(5-4) 6:1, ±1%
add pic(circuit and transformer )