I have designed in ADuM4135 for a double pulse test (DPT). The circuit works fine but after some power turn on and off event the Vout_on don't show any output signal.
I have attached the schematic file for the driver circuit designed for the DPT.
I have used the R15P22005D IC which generates +20/-5V for VDD2 and VSS2. I have not attached the power circuit board which contains the MOSFET modules.
I have designed the new board and just soldered the R15P22005D, ADuM4135 IC and some filter capacitors with following configurations below
1. VDD1 = 3.3V
2. VIN+ = 3.3V from DSP controller output
3. VIN- = GND
4. Pin 4 and Pin 5 pull up by using 10k resistor
5. Pin 6 = 3.3V
on the secondary side DESAT and GND2 is connected together.
6. Pin 9 and Pin 16 = -5V
7. Pin 13 = 20V
The circuit works fine before with circuit configurations attached with but suddenly its stops working and than I used the new board with new ADuM4135 IC but still there is no output shown at pin 14.
Hope anyone help me in this matter.