Integrated circuits - Measurement of electromagnetic immunity, 150 kHz to 1 GHz - Part 3: Bulk current injection (BCI) method

This part of IEC 62132 describes a bulk current injection (BCI) test method to measure the immunity of integrated circuits (IC) in the presence of conducted RF disturbances, e.g. resulting from radiated RF disturbances. This method only applies to ICs that have off-board wire connections e.g. into a cable harness. This test method is used to inject RF current on one or a combination of wires. This standard establishes a common base for the evaluation of semiconductor devices to be applied in equipment used in environments that are subject to unwanted radio frequency electromagnetic signals.

Circuits intégrés - Mesure de l'immunité électromagnétique, 150 kHz à 1 GHz - Partie 3: Méthode d'injection de courant (BCI)

La présente partie de la CEI 62132 décrit une méthode d'essai d'injection de courant (BCI) en vue de mesurer l'immunité des circuits intégrés (CI) en présence de perturbations RF conduites, comme par exemple celles résultant de perturbations RF rayonnées. Cette méthode s'applique uniquement aux CI connectés sur des liaisons externes à la carte, par exemple sur des torons. Cette méthode d'essai est utilisée pour injecter un courant RF sur un ou plusieurs fils. Cette norme établit une base commune pour l'évaluation des dispositifs à semi-conducteurs utilisés dans les matériels fonctionnant dans des environnements soumis à des signaux électromagnétiques à radiofréquences intempestifs.

General Information

Status
Withdrawn
Publication Date
25-Sep-2007
Withdrawal Date
24-Dec-2020
Technical Committee
SC 47A - Integrated circuits
Drafting Committee
WG 9 - TC 47/SC 47A/WG 9
Current Stage
WPUB - Publication withdrawn
Start Date
04-Jan-2021
Completion Date
31-Dec-2020
Standard

IEC 62132-3:2007 - Integrated circuits - Measurement of electromagnetic immunity, 150 kHz to 1 GHz - Part 3: Bulk current injection (BCI) method

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Frequently Asked Questions

IEC 62132-3:2007 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Integrated circuits - Measurement of electromagnetic immunity, 150 kHz to 1 GHz - Part 3: Bulk current injection (BCI) method". This standard covers: This part of IEC 62132 describes a bulk current injection (BCI) test method to measure the immunity of integrated circuits (IC) in the presence of conducted RF disturbances, e.g. resulting from radiated RF disturbances. This method only applies to ICs that have off-board wire connections e.g. into a cable harness. This test method is used to inject RF current on one or a combination of wires. This standard establishes a common base for the evaluation of semiconductor devices to be applied in equipment used in environments that are subject to unwanted radio frequency electromagnetic signals.

This part of IEC 62132 describes a bulk current injection (BCI) test method to measure the immunity of integrated circuits (IC) in the presence of conducted RF disturbances, e.g. resulting from radiated RF disturbances. This method only applies to ICs that have off-board wire connections e.g. into a cable harness. This test method is used to inject RF current on one or a combination of wires. This standard establishes a common base for the evaluation of semiconductor devices to be applied in equipment used in environments that are subject to unwanted radio frequency electromagnetic signals.

IEC 62132-3:2007 is classified under the following ICS (International Classification for Standards) categories: 31.200 - Integrated circuits. Microelectronics. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase IEC 62132-3:2007 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.

Standards Content (Sample)


IEC 62132-3
Edition 1.0 2007-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Integrated circuits – Measurement of electromagnetic immunity, 150 kHz to
1 GHz –
Part 3: Bulk current injection (BCI) method

Circuits intégrés – Mesure de l’immunité électromagnétique, 150 kHz à 1 GHz –
Partie 3: Méthode d’injection de courant (BCI)

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IEC 62132-3
Edition 1.0 2007-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Integrated circuits – Measurement of electromagnetic immunity, 150 kHz to
1 GHz –
Part 3: Bulk current injection (BCI) method

Circuits intégrés – Mesure de l’immunité électromagnétique, 150 kHz à 1 GHz –
Partie 3: Méthode d’injection de courant (BCI)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 31.200 ISBN 2-8318-9320-8
– 2 – 62132-3 © IEC:2007
CONTENTS
FOREWORD.3

1 Scope and object.5
2 Normative references .5
3 Terms and definitions .5
4 General .5
5 Test conditions .6
5.1 General .6
5.2 Test equipment .7
5.3 Test board.7
6 Test procedure .9
6.1 Hazardous electromagnetic fields .9
6.2 Calibration of forward power limitation.9
6.3 BCI test .10
6.4 BCI test set-up characterization procedure .11
7 Test report.12

Annex A (informative) Examples for test levels and frequency step selection .13
Annex B (informative) Example of BCI test board and set-up .15
Annex C (informative) Example of RF test board and set-up .18

Bibliography.19

Figure 1 – Principal current path when using BCI.6
Figure 2 – Schematic diagram of BCI test set-up .7
Figure 3 – Example test board, top view .8
Figure 4 – Calibration set-up.10
Figure 5 – BCI test procedure flowchart for each frequency step.11
Figure 6 – Impedance validation test set-up.11
Figure B.1 – General view.15
Figure B.2 – Example of top view of the test board .16
Figure B.3 – Test board build-up.16
Figure B.4 – Test board and copper fixture .17
Figure B.5 – Example of a non-conductive probes support fixture .17
Figure C.1 – Compact RF coupling to differential IC ports.18

Table A.1 – Test severity levels .13
Table A.2 – Linear frequency step .14
Table A.3 – Logarithmic frequency step .14

62132-3 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
INTEGRATED CIRCUITS –
MEASUREMENT OF ELECTROMAGNETIC
IMMUNITY, 150 kHz TO 1 GHz –
Part 3: Bulk current injection (BCI) method

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62132-3 has been prepared by subcommittee 47A: Integrated
circuits, of IEC technical committee 47: Semiconductor devices.
The text of this standard is based on the following documents:
FDIS Report on voting
47A/773/FDIS 47A/776/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62132-3 © IEC:2007
A list of all parts of the IEC 62132 series, published under the general title Integrated circuits
− Measurement of electromagnetic immunity, 150 kHz to 1 GHz can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
62132-3 © IEC:2007 – 5 –
INTEGRATED CIRCUITS –
MEASUREMENT OF ELECTROMAGNETIC
IMMUNITY, 150 kHz TO 1 GHz –
Part 3: Bulk current injection (BCI) method

1 Scope and object
This part of IEC 62132 describes a bulk current injection (BCI) test method to measure the
immunity of integrated circuits (IC) in the presence of conducted RF disturbances, e.g.
resulting from radiated RF disturbances. This method only applies to ICs that have off-board
wire connections e.g. into a cable harness. This test method is used to inject RF current on
one or a combination of wires.
This standard establishes a common base for the evaluation of semiconductor devices to be
applied in equipment used in environments that are subject to unwanted radio frequency
electromagnetic signals.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 62132-1:2006, Integrated circuits – Measurement of electromagnetic immunity, 150 kHz
to 1 GHz – Part 1: General conditions and definitions
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62132-1 apply.
4 General
The characterization of RF immunity (or susceptibility) of an integrated circuit (IC) is essential
to define the optimum design of a printed circuit board, filter concepts and for further
integration into an electronic system. This document defines a method for measuring the
immunity of ICs to RF current induced by electromagnetic disturbance.
This method is based on the bulk current injection (BCI) method used for equipment and
systems [1, 2, 3]. The BCI method simulates the induced current as a result of direct radiated
RF signals coupled onto the wires and cables of equipment and systems.
In general, in electronic systems, off-board wire connections or traces on the printed circuit
board act as antennas for electromagnetic fields. Via this coupling path, these electro-
magnetic fields will induce voltages and currents at the pins of the IC and may cause
interference. ICs are often used in various configurations dependent on their application. In
this case, immunity levels of electronic equipment are closely linked to the ability of an IC to
withstand the effects of an electromagnetic field represented.
To characterize the RF immunity of an IC, the induced current level necessary to cause the
IC’s malfunction is measured. The malfunction may be classified from A to E according to the
performance classes defined in IEC 62132-1.

– 6 – 62132-3 © IEC:2007
A principal set-up for the bulk current injection method is presented in Figure 1.
Current monitoring
IC
Current probe
under test
Power injection
DUT
Injection probe
IC controlling
I
disturbance
and monitoring
Supportive circuitry
and by-pass
capacitor
V
ss
GND
IEC  1811/07
Figure 1 – Principal current path when using BCI
Two electrically shielded magnetic probes are clamped on one wires or a combination of wires
that is/are connected to the device under test. The first probe is for the injection of RF power
that induces I onto the wires. The second probe is used for monitoring the induced
disturbance
current on those wires.
The disturbance current flows in a loop comprising: wire(s), the selected IC’s pin(s), V
ss
terminal, ground path and supportive circuitry. This supportive circuit provides the IC
functional elements as source and/or load(s). The supportive circuitry is directly connected to
the IC. When the equivalent RF impedance of the supportive circuitry is larger than 50 Ω, then
a by-pass capacitor is recommended. The by-pass capacitor, to be used at the supportive
circuitry side, may also be needed to confine the loop area in which the induced current will
be flowing. By default, the lumped by-pass capacitor of 1 nF shall be used. It represents the
capacitance from the wire onto a cable harness or chassis. Deviation from using this bypass
capacitor (e.g. as functional performance becomes affected) shall be given in the test report
The by-pass capacitor may be supplemented with optional decoupling network, see Figure 3,
to achieve the required attenuation towards the supportive circuitry. The decoupling
impedance is determined by the RF immunity of the supportive circuitry. It shall not adversely
affect the response of the device under test, i.e. the result of the test.
The disturbance current I induced into the wire(s) flows through the IC and may
disturbance
create a failure in the device’s operation. This failure is defined by parameters called the
immunity acceptance criteria, which are checked by a controlling and monitoring system.
5 Test conditions
5.1 General
The general test conditions are described in the IEC 62132-1.
During the immunity tests, either a continuous wave (CW) or an amplitude modulated (AM) RF
signal shall be used as the disturbance signal. The device under test (DUT) shall be exposed
at each frequency for sufficient dwell time. By default, an amplitude modulated RF signal
using 1 kHz sinusoidal signal with a modulation index of 80 % is recommended for testing.
When an AM signal is used, the peak power shall be the same as for CW, see IEC 62132-1.
When other modulation schemes are used, they shall be noted in the EMC IC test report.

62132-3 © IEC:2007 – 7 –
The levels of disturbance current required to test the IC’s immunity depend on the application
environment. Table A.1 in Annex A gives some examples of typical values for disturbance
current injection.
NOTE Where required by the customer, to satisfy high test levels, additional protection components could be
used to permit high current injection. All other pins must be left loaded according to 6.4 of IEC 62132-1.
5.2 Test equipment
The test equipment comprises the following equipment and facilities:
• ground reference plane;
• current injection probe(s);
• current measurement probe(s);
• RF signal generator with AM and CW capability;
• RF power amplifier(s). A minimum 50 Watt RF power amplifier is recommended;
• RF wattmeter or equivalent instrument, to measure the forward (and reflected) power;
• RF voltmeter or equivalent instrument which, together with the current measurement probe,
measures the disturbance current induced;
• directional coupler;
• DUT monitoring equipment (optional: optical interface(s)).
A schematic diagram of the test set-up is shown in Figure 2.

RF
wattmeter
Directional RF
RF
RF
coupler voltmeter
ampl ifier
generator
Optional:
Device
decoupling
under
network
test
Injection
Measurement
probe
probe
V
ss
Supportive
circuitry
Default:
by-pass
capacitor
Ground reference plane
IEC  1812/07
Figure 2 – Schematic diagram of BCI test set-up
An injection probe or set of probes capable of operating over the test frequency range is
required to couple the disturbance signal into the connecting lines of the DUT. The injection
probe is a transformer.
NOTE An optical interface can be used for monitoring the DUT response against the immunity criteria given. Use
of optical interface is not mandatory but recommended.
5.3 Test board
An example of a BCI test board is shown in Figure 3. This example of the BCI test board has
an opening in the middle to accommodate the two current probes.

– 8 – 62132-3 © IEC:2007
The standard test board as defined in IEC 62132-1 needs to be modified to fulfil the BCI test
condition requirements. If the standard test board is used, a low impedance ground
connection between standard test board and the BCI test board shall be made. Gasket,
contact springs or multiple screws shall be used to contact the BCI test board to the BCI test
fixture support at the inner hole when the GRP is not included with the BCI test board layer
stack-up.
Power supply
Control
Supportive
Wire
I/O tested
circuitry
Measurement
Device under
probe
test
Injection
Standard test
probe
board
BCI test board
IEC  1813/07
Figure 3 – Example test board, top view

The wire(s) to which the current is injected to is/are connected at one end to the selected IC
pin(s) and on the other end connected to the support circuitry. The support circuitry may
comprise a load, a supply or a signal source necessary to operate the device under test as
intended.
The BCI test board has the advantage of fixing the position of the probes resulting in a more
reproducible measurement. The size of the holes and the injection wire length should be at
least designed to the size of the probes used. The hole shall exceed the size of the probes on
all sides by at least 10 mm, with a maximum of 30 mm. In general, the wire length shall be
limited to a quarter of a wavelength at the maximum frequency used with the BCI test method
(≈ 75 mm in air at 1 GHz).
The BCI test board is placed on a copper test fixture connected to the ground reference plane
(GRP), shown in Annex C. Size of GRP is typically table top size extended to a minimum of
0,1 m beyond the footprint of the test fixture. The copper test fixture needs to be high enough
to allow the injection probe-carrying fixture.
NOTE 1 The GRP may also be incorporated in one of the BCI test board copper layers. In this case, the copper
test fixture support is no longer necessary.
The shield of the injection probe and the measurement probe shall be grounded with a short
connection underneath the copper test fixture to the GRP.
NOTE 2 Coaxial feed-through connectors can be mounted through the GRP (underneath the copper test fixture)
to be connected to the current injection and measurement probes directly.

62132-3 © IEC:2007 – 9 –
6 Test procedure
6.1 Hazardous electromagnetic fields
RF fields may exist within the test area. Care shall be taken to ensure that the requirements
for limiting the exposure of human to RF energy are met. It is preferable to perform the RF
immunity test in an enclosure providing sufficient RF shielding.
6.2 Calibration of forward power limitation
The required forward RF power from the RF generator and RF amplifier is determined in the
BCI test set-up calibration procedure of the injection probe. In this process the level of
forward RF power (in CW mode) supplied to the injection probe is established, which is
necessary to generate the desired current I .
disturbance
Calibration is performed in the calibration fixture, composed of an electrically short section of
a transmission line. The short section permits the measurement of current in the central
conductor of the line, while the current injection probe is clamped around the central
conductor. The output terminals of the fixture are terminated with a 50 Ω load each with
minimum of 0,5 W power dissipation, spectrum analyser or RF voltmeter. Measurement of the
voltage established across the 50 Ω input impedance of RF receiver permits the calculation of
current flowing in the central conductor.
The calibration procedure shall be as follows.
a) The injection probe shall be clamped in the calibration fixture as shown in Figure 6. Fix the
probe in the central position, equidistant from either end of the fixture walls.
The calibration fixture will be terminated by a 50 Ω RF load at one end and a 50 Ω RF
receiver (spectrum analyser, voltmeter, etc.) at the other, with an attenuator if necessary.
Caution: use a load with an adequate power rating.
NOTE Lower power ratings can be used during calibration assuming that the system behaves linearly.
b) Connect the components of test equipment as shown in Figure 4.
c) Increase the amplitude of the test signal to the injection probe until the required current
level, as measured by the RF receiver, is reached.
d) Record the forward RF power necessary to generate the desired current I . This
disturbance
forward RF power is admitted as the maximum forward power limit, P .
limit
e) Repeat steps d) to e) for each frequency step within the specified frequency range.

– 10 – 62132-3 © IEC:2007
Injection probe
Attenuator
Load
+ receiver
50 Ω
50 Ω
Directional coupler
Wattmeter
RF
generator
Amplifier
IEC  1814/07
Figure 4 – Calibration set-up
6.3 BCI test
For the RF immunity tests, a substitution method with power and current limitation is used,
which allows keeping track of RF power and RF current up to the limits. Substitution method
is well adapted in this IC immunity test method and related to the ISO method.
• Connect the current probes, other test equipment and test board.
• Supply the DUT and check for a proper operation.
• For each test frequency, increase the amplitude of the signal gradually to the injection
probe until
– target test current limit level for I is reached as indicated by monitoring the
disturbance
output of the measurement current probe, or
– the calibrated maximum forward power P supplied to the injection probe is reached.
limit
Also in this case, although the injected current level is not reached, the maximum
current level is recorded, or
– the RF immunity level of the IC is found. If a failure of IC occurs or the limit for
I is met or P target level is reached, in all cases the monitored current and
disturbance limit
the forward power are recorded.
NOTE 1 For the purpose of investigation, the details regarding the RF immunity determination could be recorded
too.
NOTE 2 Assuming no glitches are generated during frequency transitions, the RF amplitude at the next frequency
may be chosen e.g. 10 dB less than the previous level (taken into account the frequency dependency of the system)
to speed up the test.
Test procedure is depicted in detail in the flowchart given in Figure 5. That flowchart applies
for only one frequency step.
62132-3 © IEC:2007 – 11 –
Start
Increase gradually
forward power
Occurrence of
Yes
IC failure
No
No
No
P I
limit limit
reached reached
Yes Yes Yes
Record measured injected current
and forward power
IEC  1815/07
Figure 5 – BCI test procedure flowchart for each frequency step
6.4 BCI test set-up characterization procedure
In order to validate the BCI test board impedance, a validation procedure is required.
For this validation, all components of the test set-up shall be used, except for the device
under test. The port represented by the selected pin(s) under IC test is replaced with a 50 Ω
reference impedance. Figure 6 shows a schematic of the validation test set-up.

Optional:
decoupling
network
Injection Measurement
probe
probe
Supportive
50 Ω
circuitry
Default:
by-pass
capacitor
BCI test board
IEC  1816/07
Figure 6 – Impedance validation test set-up

– 12 – 62132-3 © IEC:2007
During the validation over the whole frequency range, the value of injected current is fixed.
A value of 10 mA for the disturbance current injected is recommended. For each frequency
step, the RF forward power needed shall be noted.
Test board validation could be characterized by transfer impedance defined with:
P ( f )
forward
Z( f ) =
I
In cases involving use of several test boards, the Z(f) values should be the same. That allows
comparison of IC immunity tests results done under the same conditions.
7 Test report
The test report shall be prepared in accordance with the requirements given in IEC 62132-1.
Immunity acceptance criteria should be clearly described in the test report. The test board
configuration should also be described in detail to reproduce the results.
In all cases, such parameters as injected RF current I , the applied forward RF power
disturbance
P , calibration power P and the current I , which are recorded during the
forward limit disturbance
calibration and measurement processes, shall be documented in the test report.
Additional critical items such as test board description and value of by-pass capacitor (default)
and decoupling (when used) should be listed in the test report.

62132-3 © IEC:2007 – 13 –
Annex A
(informative)
Examples for test levels and frequency step selection

A.1 Typical values for current injection
The test signals severity level is the test current of the calibrated test current applied. These
test severity levels are expressed in terms of the equivalent RMS (root-mean-square) mA
value of the unmodulated current signal. These test levels are taken from the requirements for
module testing in automotive/avionic applications. The levels applied at IC testing shall be
provided by the end-user and are determined by the criticality of the function(s) controlled.
Other application environments require less stringent limits.
Examples of severity levels are given in Table A.1. Levels of injected current are related to IC
pin connection. Pins connected to external wiring could be tested with the highest current
values, whereas pins with only local connections could be allowed to withstand the lower
levels. Values should be clearly detailed in the IC test plan.
Table A.1 – Test severity levels
Test severity level Current (CW value)
No insertion loss
I 50 mA
II 100 mA
III 200 mA
IV 300 mA
V Specific value agreed between the users
of this standard
In case of use of additional protection components applied on the test board, in order to
withstand higher current values, a description of this protection circuitry and its layout should
be added in the IC test report.
A.2 Frequency steps
Injected current induced by electromagnetic disturbances on wire is obtained at discrete
frequencies. The distance between 2 test frequencies is defined as the frequency step.
The choice of the frequency steps should cover the whole immunity range of IC and avoid
skipping frequencies on which an immunity problem may occur. In general, the root causes of
IC disturbances are due to impedance resonances. These are often very narrow and the
frequency step should take into account this phenomenon.
There are 2 ways to define frequency steps: with a linear or a logarithmic approach.
An example of a linear frequency step (automotive and aerospace applications) is given in
Table A.2.
– 14 – 62132-3 © IEC:2007
Table A.2 – Linear frequency step
Frequency band Maximum frequency size step
10 kHz to 100 kHz 2 kHz
100 kHz to 1 MHz 20 kHz
1 MHz to 10 MHz 200 kHz
10 MHz to 100 MHz 2 MHz
100 MHz to 1 GHz 5 MHz
An example of a logarithmic frequency step (automotive applications) is given in Table A.3.
Table A.3 – Logarithmic frequency step
Frequency Frequency Frequency step
min. max.
10 kHz 100 kHz 10 %
100 kHz 100 MHz 5 %
100 MHz 1 GHz 2 %
62132-3 © IEC:2007 – 15 –
Annex B
(informative)
Example of BCI test board and set-up

B.1 Example of BCI test board and set-up

The BCI test set-up presented in this example uses injection probes, e.g. model F140 from
FCC. The probes shall be able to inject high current values with a frequency range of 100 kHz
to 1 GHz. Probes associated to a small current probe, e.g. 94111 model, allow the needs of
the test to be covered.
Due to the size of the two probes, 110 mm wide for both, a test board with an opening of
120 mm to put the two probes is required to allow the probes used in the lower frequency
range
(< 500 MHz). Figure B.1 shows a general view of the test board. The recommended distance
between probes is 10 mm.
Wattmeter
Power
RF
amplifier
Optical
voltmeter
interface
Directional
RF
coupler
generator
Measurement
Injection
Failure
probe
probe
detection
Supportive
circuitry
IC under
test
Wire
Test board
IEC  1817/07
Figure B.1 – General view
A hole, typical size: 120 mm × 150 mm shall permit placement of the two probes used in the
lower frequencies, when using conventional BCI probes. Distance between probes may be
limited to 1 mm.
When smaller injection and measurement probes are used to enable testing up to higher
frequencies, a metal plate shall cover this hole in the test board with a hole exceeding these
probes by 10 mm on each side. This sub-board shall make firm electrical contact at each
edge of the test board.
The position of the current measurement probe should be close to the IC, required length less
than 20 mm, which permit to measure the current injected in the IC. In this case, it is more
appropriate to measure the surface currents induced in the differential lines than to create a
discontinuity in the differential transmission line path. The distance between probes should be
limited to 1 mm.
– 16 – 62132-3 © IEC:2007
To minimize effects due to the test board, each side of the test board should be wide enough
to be considered as a ground reference plane. Recommended size is minimum 30 mm, see
Figure B.2.
Injection
Supportive
IC under
probe Current
circuitry
test
probe
d
10 mm ≤ d ≤ 20 mm
By-pass
capacitance
120 mm
IEC  1818/07
Figure B.2 – Example of top view of the test board
The ground reference plane (GRP) is considered to be a solid ground plane. The disturbance
current return path is considered through this GRP in the test set-up. Up to 1 GHz, this
ground reference plane will have neglectable influence on the measurement set-up and can
be disregarded.
The test board consists of at least two copper layers on an FR4 carrier material. The device
under test, associated devices and tracks are placed on the topside. The bottom side is
dedicated to a solid ground plane. A test board build-up is presented in Figure B.3.

Supportive
circuitry IC under test
Top Signal tracks
Bottom Solid ground plane
IEC  1819/07
Figure B.3 – Test board build-up

The test board bottom side, being a GND plane, is placed on the copper test fixture,
connected to the ground reference plane as shown in Figure B.4. The copper test fixture shall
be able to carry the BCI bottom test board conductively. The test fixture is placed on a copper
ground reference plane (GRP). The shield of the injection probe has to be grounded
underneath the copper test fixture to the GRP. It is recommended in order to ensure
reproducibility, when large current probes have to be supported.

150 mm
≥30 mm
62132-3 © IEC:2007 – 17 –
IEC  1820/07
Figure B.4 – Test board and copper fixture

To fix the position of probes, a specific support is recommended. An example of that support
is shown in Figure B.5. The probe support shall be made of non-conductive materials, with an
ε of around 4.
r
Injection Measurement
probe probe
IEC  1821/07
.
Figure B.5 – Example of a non-conductive probes support fixture

– 18 – 62132-3 © IEC:2007
Annex C
(informative)
Example of RF test board and set-up

As an RF probe injection, a multi-wire RF transformer can be used, e.g. a SMD type. Coupling
onto a differential transmission line with a ground plane underneath can be performed with a
3-wire RF transformer, and its frequency range can be extended by adding capacitive
coupling (increase capacitances: C4/C5 in Figure C.1). The center wire is then used for
injection where the off center wires are in series with the differential transmission line.

3-wire RF transformer
L1 20 μH
10 3 4 8
C1
C3 C4 C6
DUT
3 pF 3 pF 3 pF 3 pF
port
L2 20 μH
R4
2 5
R3
C2
C5
3 pF
3 pF
L3 20 μH
1 6 9
Supportive R2
R1
50 Ω
50 Ω
circuit
RF
disturbance
V1
source
Transmission lines
Transmission lines
IEC  1822/07
Figure C.1 – Compact RF coupling to differential IC ports

62132-3 © IEC:2007 – 19 –
Bibliography
[1] ISO 11452-4:2005, Road vehicles – Component test methods for electrical disturbances
from narrowband radiated electromagnetic energy – Part 4: Bulk current injection (BCI)
[2] DO160D section 20.4: Conducted Immunity (CS) test
[3] MIL-STD-461E: Requirements for the Control of Electromagnetic Interference
Characteristics of Equipments and Subsystems (CS114)

___________
– 20 – 62132-3 © CEI:2007
SOMMAIRE
AVANT-PROPOS.21

1 Domaine d’application et objet.23
2 Références normatives.23
3 Termes et définitions .23
4 Généralités.23
5 Conditions d'essai .24
5.1 Généralités.24
5.2 Matériel d’essai .25
5.3 Carte d’essai .26
6 Modalités d'essai.27
6.1 Champs électromagnétiques dangereux .27
6.2 Etalonnage de la limitation de puissance directe .27
6.3 Essai BCI .28
6.4 Procédure de caractérisation du dispositif d’essai BCI.29
7 Rapport d'essai .30

Annexe A (informative) Exemples de niveaux d’essai et de choix de pas de fréquence .31
Annexe B (informative) Exemple de carte d’essai BCI et mise en oeuvre .33
Annexe C (informative) Exemple de carte d’essai RF et mise en oeuvre .36

Bibliographie.37

Figure 1 – Trajet du courant principal lors de l’utilisation du BCI .24
Figure 2 – Schéma du montage d’essai BCI.25
Figure 3 – Exemple de carte d’essai, vue de dessus.26
Figure 4 – Montage d’étalonnage.28
Figure 5 – Logigramme de la procédure d’essai BCI pour chaque échelon de fréquence .29
Figure 6 – Montage d’essai de validation d’impédance.29
Figure B.1 – Vue générale .33
Figure B.2 – Exemple de vue de dessus de la carte d’essai .34
Figure B.3 – Assemblage de carte d’essai .34
Figure B.4 – Carte d’essai et montage en cuivre.35
Figure B.5 – Exemple de montage de support de pinces non conducteur .35
Figure C.1 – Couplage RF compact aux accès différentiels du CI .36

Tableau A.1 – Niveaux de sévérité d’essai.31
Tableau A.2 – Pas de fréquence linéaires.32
Tableau A.3 – Pas de fréquence logarithmiques .32

62132-3 © CEI:2007 – 21 –
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
CIRCUITS INTÉGRÉS –
MESURE DE L’IMMUNITÉ ÉLECTROMAGNÉTIQUE
150 kHz À 1 GHz –
Partie 3: Méthode d’injection de courant (BCI)

AVANT-PROPOS
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