Overview
IEC TS 62215-2:2007 - "Integrated circuits - Measurement of impulse immunity - Part 2: Synchronous transient injection method" - is a Technical Specification from the IEC that defines a reproducible test method to quantify the impulse immunity of integrated circuits (ICs). The specification describes how to apply short, fast‑rise conducted impulses of varying amplitude, duration and polarity to an IC while synchronizing the disturbance with the IC activity. The aim is a uniform testing environment that yields controlled, repeatable measurements of IC immunity to fast synchronous transients.
Key Topics
- Measurement philosophy and set‑up concept: Principles for obtaining quantitative, reproducible immunity results and verifying the test environment.
- Synchronous transient injection: Use of short impulses in conductive mode that are synchronized to IC operation to ensure controlled conditions.
- Coupling networks: Design and verification of coupling circuits for different pin types (ground, supply, I/O, reference) to transfer the transient with known impedance and characteristics.
- Test circuit board and IC loading: Requirements for board topology, pin loading/termination, decoupling and power supply arrangements to avoid test artefacts.
- IC specific considerations: Guidance on supply voltage, decoupling, required IC stimulation/activity, monitoring of IC responses and stability over time.
- Test conditions and equipment: Ambient conditions, impulse immunity of the test set‑up, required test equipment and measurement relationships.
- Test procedure and verification: Time step calculation, number of measurements, monitoring checks and system verification to ensure valid results.
- Reporting: Required content of the test report including immunity limits/levels, performance classes and explicit notation of any deviations from the specification.
Applications
IEC TS 62215-2 is intended for:
- Semiconductor manufacturers performing design validation and robustness testing of ICs against fast conducted transients.
- EMC test laboratories establishing standardized methods for IC impulse immunity testing.
- Design and QA engineers in automotive, industrial, communications and consumer electronics who need to assess device immunity to synchronous transient disturbances.
- Compliance and product safety teams that require quantitative, reproducible immunity data to support system‑level EMC assessments.
Practical use cases include vulnerability analysis during IC development, qualification of products for harsh electrical environments, and comparative benchmarking of device immunity.
Related Standards
- IEC 61967‑4 (referenced normative document) - conducted emissions direct coupling methods.
- IEC 62215‑1 (in preparation) - terms and definitions for IC impulse immunity.
- The introduction notes relation to transient pulse types resembling IEC 61000‑4‑2 (ESD), IEC 61000‑4‑4 (EFT) and IEC 61000‑4‑5 (surge).
Keywords: IEC TS 62215-2, impulse immunity, synchronous transient injection, integrated circuits, IC testing, EMC, coupling network, DUT, test setup, immunity levels.