ESD2CAN24-Q1: Stand Off vs. Clamping Voltage Difference

Dajon McGill

Part Number: ESD2CAN24-Q1

Hey Team,

My customer and I are wondering what the difference is between the Reverse Stand-off voltage (Vrwm) and Clamping voltage (Vclamp) is on the ESD2CAN24-Q1.

Would this be a function of current sunk into diodes - in the case of Vrwm, would the DS be referring to operation at currents <3.5App?

Thank you for the help.

Best,
Dajon McGill

over 2 years ago

0 Matt Smith3 over 2 years ago

TI__Expert 8486 points

Hi Dajon,

Vrwm is the maximum voltage that should be on the signal line during normal operation. This is to ensure that the diode will not prematurely conduct during normal system operation. This is usually spec'd as the max voltage across the diode that will cause it to leak < 10-50 nA of current through it. You can read more about Vrwm here: https://e2e.ti.com/blogs_/b/analogwire/posts/esd-fundamentals-part-5-reverse-working-voltage-breakdown-voltage-and-polarity-configuration

Vclamp is the voltage the downstream circuitry sees when the diode is conducting during an ESD or surge event. This is spec'd for different types of transients based on their energy level/intensity. (ie 16 A TLP vs 6 A 8/20 us surge). You can read more about Vclamp here: https://e2e.ti.com/blogs_/b/powerhouse/posts/esd-fundamentals-part-3-clamping-voltage

Regards,

Matt Smith

Interface

Interface forum

ESD2CAN24-Q1: Stand Off vs. Clamping Voltage Difference