EDA_hg81
Advanced Member level 2
I have a stack PCB with top PCB and bottom PCB.
The +5V on bottom board is powered from top board.
Current situation is, when the top board and bottom board are attached, the +5V dropped down to +3.6V. I have confirmed the +5V power plane is not shortcut to ground.
After all components connected with +5V power plane are removed, the +5V is still dropped to +3.6V.
Please let me know what is this problem?
Thanks.
The +5V on bottom board is powered from top board.
Current situation is, when the top board and bottom board are attached, the +5V dropped down to +3.6V. I have confirmed the +5V power plane is not shortcut to ground.
After all components connected with +5V power plane are removed, the +5V is still dropped to +3.6V.
Please let me know what is this problem?
Thanks.