Electromagnetic Compatibility of Automotive Electronic Components Immunity to Electrostatic Discharge (ESD)
Preface
Additional tests necessary for evaluation and relea of electronic components beside the EMC tests are defined and specified in the drawing, Technical Supply Specifications (TL standard), or other documents.Previous issues
TL 82466: 1998-08, 2000-07, 2005-02, 2007-11Changes
The following changes have been made as compared to TL 82466: 2007-11:–Table 1, adaptation of limit values
–Introduction of functional performance status classification (FPSC) acc. to ISO standard Contents
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英语幼儿教育Scope .............................................................................................................................2Terms and definitions .....................................................................................................2General requirements ....................................................................................................
3Underlying standards .....................................................................................................3Protection objectives ......................................................................................................3Test scope and test verity ..........................................................................................3Test equipment and general test requirements .............................................................5Tests at asmbly level (packaging and handling) ........................................................6Test tup and test conditions for tests at asmbly level .............................................6Procedure for tests at asmbly level . (6)
1233.13.24566.16.2Group Standard
TL 82466
Issue 2009-06
Class. No.:8MD50
Descriptors:
EMC, ESD, electrostatic discharge
Check standard for current issue prior to usage.
This electronically generated standard is authentic and valid without signature.
The English translation is believed to be accurate. In ca of discrepancies the German version shall govern.Numerical notation acc. to ISO practice.
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Technical responsibility Standards Department I/EE-27Dr. Matthias Rudolph Tel.: +49-841-89-36140EEI/Z
Harald Schindler
Tel.: +49-5361-9-78556
EKTC/4 Dirk Beinker EKTC
Tel.: +49-5361-9-32438
Manfred Terlinden
Confidential. All rights rerved. No part of this document may be transmitted or reproduced without prior permission of a Standards Department of the Volkswagen Group.Parties to a contract can only obtain this standard via the B2B supplier platform
© Volkswagen Aktiengellschaft
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Tests at system level .....................................................................................................7Test tup and test conditions for tests at system level .................................................7Procedure for testing at system level – direct discharge ................................................8Procedure for testing at system level – indirect discharge ...........................................10Test at vehicle level .....................................................................................................12Test tup and test conditions for tests at vehicle level ...............................................12Procedure for tests at vehicle level ..............................................................................12Documentation ......................................................
.......................................................14Referenced documents ................................................................................................14Description of the functional performance status classification (FPSC) .....................15Geometric tup of the coupling structure for indirect discharge at system level ......1677.17.27.388.18.2910Appendix A Appendix B Scope
This Technical Supply Specification (TL) contains requirements and tests to ensure electromagnetic compatibility (EMC) of electronic asmblies with respect to electrostatic discharges. The apply to discharges during:–asmbly,–rvicing,–
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that occur directly on the asmbly and to discharges to neighboring objects that can couple into supply and signal lines of the vehicle or into electric asmblies.Terms and definitions
Unless otherwi specified, the definitions of terms t forth in DIN EN 61000-4-2 "Testing of Inter‐ference Immunity to Electrostatic Discharge" apply.Asmbly
An asmbly is defined as one single component or a combination of components as supplied by the supplier.Direct discharge
Discharge occurs directly onto the DUT.
FPSC (Function Performance Status Classification)
This standard us the functional performance status classification (FPSC) as defined in
ISO 11452-1 AMD 1, ISO 7637-1 AMD 1 and ISO 10605. A detailed description can be gathered from Appendix A.Indirect discharge
Discharge occurs onto a coupling structure located in the vicinity of the DUT. It simulates a discharge onto objects located in the vicinity of the DUT or discharges that flow off via lines that are adjacent to lines of the DUT in the wiring harness.Malfunction
burson marstellerDisturbance of the device's function that is beyond permissible. The malfunction ends after the dis‐turbance subsides.Contact discharge
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Test method characterized by bringing the test generator electrode in contact with the DUT; discharge is then initiated by the generator discharge switch.Air discharge
国外中学Test method characterized by quickly bringing the charged test generator electrode clo to the de‐vice under test (DUT); the discharge arcs over to the DUT .Surface
Here the term "surfaces" does not only refer to larger surfaces but also to all gaps and openings (switches, tip switches, transition points, ventilation slots, speaker openings, etc.).Test step
In the context of this standard, the term test step refers to the specified number of discharges that occur at a discharge point and which have a specific polarity and voltage.Damage
One or more functions of the device do not perform as designed during and after exposure to the disturbance and the device has to be repaired or replaced or, if there is still functional capability, some parameters do not lie within the specified tolerances.System
A system is defined as the asmbly in conjunction with all components necessary for complete functioning (tip switches, switches, antennas, displays, nsors, actuators, etc.).General requirement
s Underlying standards西班牙语学习入门
TL 82466 is bad on DIN EN 61000-4-2 (Testing of Interference Immunity to Electrostatic Discharge)and ISO 10605 (Road vehicles - Test methods for electrical disturbances from electrostatic dis‐charge).Protection objectives
There must not be any permanent damage to an asmbly caud by electrostatic discharges during installation, after-sales rvice measures, or vehicle u. In addition, discharges from persons in the vehicle or at the vehicle must not cau malfunctions or function failures.
Design measures must be taken in order to prevent charging of components through air flows or motion.
The miconductor components connected to the DUT´s terminals must pass this test without addi‐tional protective circuitry at the respective pins. If this requirement is not met by miconductor
elements ud, the asmbly developer must explain how sufficient ESD interference immunity can be achieved using other suitable protection measures.Test scope and test verity
ESD testing must be performed at asmbly, system, and vehicle level. Component-specific perfor‐
mance specifications may contain additional tests or deviations as compared to the test scope and/or test verity defined in this TL, specified by the responsible Volkswagen Group EMC engineering department.
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All test scopes specified in Table 1 must be performed.
Table 1 – Test scope overview
a)
Additionally, in order to ensure sparkover resistance (e.g. insulated metallic surfaces).
Test equipment and general test requirements
The requirements for test generators as specified in DIN EN 61000-4-2 apply except for the following deviations:–It must be possible to lect an energy storage capacitance between 150 pF and 330 pF.–The discharge resistance must be 330 Ω.
–It must be possible to lect an output voltage of up to and including ± 15 kV for contact and air discharges.
–The test generator properties are to be documented according to ISO 10605.–17作业网英语
Relative humidity must lie between 20% and 60% during the test.
Prior to performing a test, a test plan is to be prepared, which contains all items, operating states and test verities to be tested.
baisA test starts with the lowest absolute test voltage and ends with the highest absolute test voltage. In this context, either alternating polarities (e.g. +4 kV → -4 kV → … → +15 kV → -15 kV) or parate test runs with positive and negative test voltage (e.g. +4 kV → … → +15 kV → -4 kV → … → -15 kV) are possible.复活节的来历
Unless agreed otherwi with the responsible EMC engineering department in the Volkswagen Group, the function is to be checked and the event log is to be read out after each discharge voltage.Discharges cau the charge to build up on conducting surfaces or connector pins. The charges must be dissipated before every new discharge.
During discharge, the electrode is to be kept perpendicular to the DUT to the extent possible. If this is not possible, an angle of at least 45° must be maintained.
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