allennlowaton
Full Member level 5
Hello EDA fellows,
I put my design in IR drop and power/ground bounce simulations.
I obtained failed results.
The circuit should produce constant currents (20mA) for the LEDs, but after simulation showed that the current increases (now ranged 20mA~25mA )
For the IR drop, I connect a one resistor(that will have a drop of 50mV) at VDDexternal to VDDinternal and another resistor (that can have a drop of 50mV) at ground internal to ground external.
For the power and ground bounce, I just replaced the resistors with a 4nH inductors.
I put my design in IR drop and power/ground bounce simulations.
I obtained failed results.
The circuit should produce constant currents (20mA) for the LEDs, but after simulation showed that the current increases (now ranged 20mA~25mA )
For the IR drop, I connect a one resistor(that will have a drop of 50mV) at VDDexternal to VDDinternal and another resistor (that can have a drop of 50mV) at ground internal to ground external.
For the power and ground bounce, I just replaced the resistors with a 4nH inductors.