M
Marco Trapanese
- Jan 1, 1970
- 0
Hello,
I read a lot of stuff about ESD protection. I know the difference
between avalanche diodes and fast switching diodes, etc...
Let's see an example: a connector with 3 lines:
+24V
signal (0-24V)
0V
My board have a large "earth" plane on one edge (where I put
connectors). This plane is connected to the ground *outside* the board,
at the power supply unit.
The ESD protection will be effective if I can discharge the energy far
from my circuit, so the diodes will be connected between line and the
earth plane.
Am I wrong here?
I'm going to use unidirectional TVSs with a working voltage of 24V for
both power line and signal line.
And for 0V (GND) ? May I use a standard BAV99 with both terminal
connected to the earth? In this way any spike that rises over the Vf
will be clamped and discharged to the earth.
Is it correct? What do you recommend?
Thanks in advance
Marco
I read a lot of stuff about ESD protection. I know the difference
between avalanche diodes and fast switching diodes, etc...
Let's see an example: a connector with 3 lines:
+24V
signal (0-24V)
0V
My board have a large "earth" plane on one edge (where I put
connectors). This plane is connected to the ground *outside* the board,
at the power supply unit.
The ESD protection will be effective if I can discharge the energy far
from my circuit, so the diodes will be connected between line and the
earth plane.
Am I wrong here?
I'm going to use unidirectional TVSs with a working voltage of 24V for
both power line and signal line.
And for 0V (GND) ? May I use a standard BAV99 with both terminal
connected to the earth? In this way any spike that rises over the Vf
will be clamped and discharged to the earth.
Is it correct? What do you recommend?
Thanks in advance
Marco