Phenomenological approach for ESD immunity design

Abstract

It was verified that, a 330 ohdl50 pF ESD contact discharge simulator met the IEC 801-2 requirements in 150 ps and 350 ps rise time test setups. This same ESD simulator using air discharge in a 150 s test setup, with a charge rolta e, between 2 and 8 i v had a peak current 2 times higfer and a rise time of 116 of the contact values. A five step design order is presented to achieve cost effective ESD equipment immunity desi . The key consideration for obtaining this %sign is the understanding of the common-mode (CM) ESD current path. A number of examples illustrate this key from the simple reset hardening to the advance concept of ESD differential termination of the converted transient and using a CM inductor to improve the CM rejection in the receptor.

ESD field penetration through slots into shielded enclosures: a time domain approach

“…But also the overall size of the sensor is important for reduced field distortion. Sensor concepts with an active electro-optical conversion [2], [3] have no metallic leads but suffer from large dimensions due to an additional power supply. Using an electro-optical modulator, as described in [4], [5], most of the sensor materials is nonmetallic.…”

“…Compliance to EMC directives is nowadays a challenge for electronic designers because of the great amount of electromagnetic phenomena against which an equipment should be immune [1]. In this framework, the electrostatic discharge (ESD) stress represents one of the most severe susceptibility test because the discharge is characterized by an high level excitation as well as by a wide frequency spectrum [2], [3].…”