Hi AD experts,
My board looks very sensitive to ESD (Works one day perfectly and don't work the day after), and I trying to find out.
Don't work means that :
- inputs still valid --> OV<500mV; UVF&UVR>500mV (at multimeter)
- GATE are not triggered (0V) --> MOSFET are OFF
- CH2 FET is closed, even when the LTC4421 power is remooved
- INTVCC is ok : 3.8V measured
Does it make sense to use Bidirectional TVS as ESD protection for source input ? Since input range absolute Maximum Rating of LTC4421 is -10V to 60V (not symetrical).
TVS used in my design is :
Subber is present.
Additional question : if the current limit feature isn't needed. Can we just tie SENSE pin to GND ?
[edited by: NiceJ at 7:53 AM (GMT -5) on 17 Dec 2020]