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DRV5023: How to increase the ESD Rating for this component

Part Number: DRV5023
Other Parts Discussed in Thread: DRV5032


I am representing a company making cable harnesses for an Automotive company. We are using this sensor to detect the presence of a magnet. With the magnet correctly positioned, the controller allows the mechanism to function. If the magnet moves, the mechanism will stop.

We are currently going through the Automotive Grade Review process, which has flagged the following issue:

TI states the HBM ESD rating for the DRV5023 sensor to be ± 2500V. Our Automotive Customer needs the sensor to have a HBM ESD rating of ± 8000V.

We're assuming there is not a comparable sensor from TI that does meet the ESD rating requirement, so is there anything we can do to increase the rating to the required level. Would adding a capacitor between VCC & GND and another one between OUT & GND help, if it does, what values would be required.

If anyone is able to help & needs any further information, please let me know.

Many thanks in advance


  • Hey Anthony,

    Thanks for considering to use Texas Instruments.  Unfortunately at the moment our highest HBM rating for unipolar switches is 6000V and that is for the DRV5032, which is not automotive qualified.

    The HBM ESD and other ESD ratings are dependent upon internal circuitry which may be composed of diodes or some special transistor configuration.  As such you cannot really change it.  However, depending on where a person touches the board you might be able to help attenuate some of the incoming discharge with resistors, caps, and tvs diodes.  Yet if the user touches the board right at where trace enters into the part, your extra preventative circuitry may not be of much use.  Perhaps with a non-conductive lacquer of sorts you could increase the resistance and clearance (distance between Human output potential and device input potential), as well as prevent the user from touching between your device pin and the additional protective circuitry.