We have build PCB for testing the performance of LM74910 before using in our final design. Attached schematic diagram and showing jumper selection, changes made before testing.
We are able not able to reduce the inrush current. Selected Cdvdt capacitor shall reduce it to 3.3A but we are seeing about 30A.
Below is schematic
Test waveform showing Green = output, Purple = input, Blue = VDS across H – MOSFET, yellow = input current
Pls. advice, we are near to final release. Appreciate your quick response.
Thank you
