I need to interface ADuM4223 with the IGBT Part No : IXXK300N60B3 make : IXYS
I have chosen Bootstrap values Rboot : 0.43 ohms , Cboot : 1 uf, Dboot : MUR 360.
My application requires TOP & BOTTOM device will turn ON together,as it is isolated boost full bridge topology.
When i turned ON the circuit with low voltage,it starts drawing current from Main DC input even with Bridge open condition. Pls justify the problem which i am facing.The switching frequency is 25 kHz.
Kindly provide your comments & suggestions