IEC 62684:2011

Interoperability specifications of common external power supply (EPS) for use with data-enabled mobile telephones

IEC 62684:2011 specifies the interoperability of common external power supplies for use with data enabled mobile telephones. It defines the common charging capability and specifies interface requirements for the the external power supply. Safety and EMC aspects are not covered by this International Standard. Safety is covered by IEC 60950-1 and EMC is covered by EN 301 489-34. The French version of this standard has not been voted upon.

Spécifications de l'intéropérabilité de l'alimentation externe commune (EPS) pour téléphones mobiles avec service de données

La CEI 62684:2011 spécifie l'interopérabilité des alimentations externes communes utilisables avec des téléphones mobiles avec service de données. Elle définit leurs fonctionnalités communes en charge et spécifie les exigences d'interface pour l'alimentation externe. Les aspects liés à la sécurité et la CEM ne sont pas couverts par la présente Norme Internationale. La sécurité est traitée par la CEI 60950-1 et la CEM est traitée dans la EN 301 489-34. La version française de cette norme n'a pas été soumise au vote.

General Information

• Status: Published
• Publication Date: 26-Jan-2011
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• ICS: 35.100.05 - Multilayer applications
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Start Date: 05-Feb-2018
• Completion Date: 26-Oct-2025

Relations

• Revised: IEC 62684:2018 - Interoperability specifications of common external power supply (EPS) for use with data-enabled mobile telephones
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62684 ®
Edition 1.0 2011-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Interoperability specifications of common external power supply (EPS) for use
with data-enabled mobile telephones

Spécifications de l’intéropérabilité de l’alimentation externe commune (EPS)
pour téléphones mobiles avec service de données

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by

any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or

IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
 Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
 IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
 Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
 Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
 Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
 Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
 Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
 Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: [e-mail]
Tél.: [phone]
Fax: [phone]
IEC 62684 ®
Edition 1.0 2011-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Interoperability specifications of common external power supply (EPS) for use
with data-enabled mobile telephones

Spécifications de l’intéropérabilité de l’alimentation externe commune (EPS)
pour téléphones mobiles avec service de données

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX L
ICS 33.050, 33.060.80 ISBN 978-2-88912-354-4

– 2 – 62684  IEC:2011
CONTENTS
FOREWORD . 3

1 Scope . 5

2 Normative references . 5

3 Terms and definitions . 5

4 Abbreviations . 6

5 EPS specification . 6

5.1 DC plug connector specification . 6

5.2 AC input characteristic . 6
5.3 Environmental specification . 6
5.4 DC output characteristic . 7
5.5 Protection . 7
5.6 EPS detection . 7
5.7 Reliability . 8
6 Testing requirements . 8
6.1 General . 8
6.2 Common mode voltage of the DC output . 8
6.3 Ripple voltage at the DC output . 9
Bibliography . 10

62684  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
INTEROPERABILITY SPECIFICATIONS

OF COMMON EXTERNAL POWER SUPPLY (EPS)

FOR USE WITH DATA-ENABLED MOBILE TELEPHONES

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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 62684 has been prepared by technical area 1: Terminals for audio,

video and data services and content, of IEC technical committee 100: Audio, video and
multimedia systems and equipment.
The text of this standard is based on the following documents:
CDV Report on voting
100/1714/CDV 100/1771/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62684  IEC:2011
The committee has decided that the contents of this publication will remain unchanged until

the stability 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.
62684  IEC:2011 – 5 –
INTEROPERABILITY SPECIFICATIONS

OF COMMON EXTERNAL POWER SUPPLY (EPS)

FOR USE WITH DATA-ENABLED MOBILE TELEPHONES

1 Scope
This International Standard specifies the interoperability of common external power supplies

for use with data enabled mobile telephones. It defines the common charging capability and
specifies interface requirements for the the external power supply.
Safety and EMC aspects are not covered by this International Standard. Safety is covered by
IEC 60950-1 and EMC is covered by EN 301 489-34.
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 60950-1:2005, Information technology equipment – Safety – Part 1: General requirements
EN 301 489-34 Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services – Part 34:
Specific conditions for External Power Supply (EPS) for mobile phones
Universal Serial Bus Specification, Cables and Connectors Class Document, Revision 2.0,
August 2007
(http://www.usb.org/developers/docs)
USB Battery Charging Specification, Revision 1.1
USB Micro-USB Cables and Connectors Specification, Revision 1.01
USB-IF Cable Assembly Test Requirements for Compliant Usage of Connectors and Cables in
Micro-USB 1.01
USB-IF Connector Test Requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
adaptor
device for connecting from a USB Micro-B receptacle/plug to a specific non Micro-USB
connector
NOTE An adapter can also be a cable.

– 6 – 62684  IEC:2011
4 Abbreviations
For the purposes of this document, the following abbreviations apply:

AC Alternating Current
DC Direct Current
EPS External Power Supply
ESR Equivalent Series Resistance

EUT Equipment Under Test
GND GrouND
USB Universal Serial Bus
Vbus Virtual Bus
5 EPS specification
5.1 DC plug connector specification
The cable assembly supplied with the EPS shall terminate in a USB Micro-B plug. The cable
assembly may be permanently connected to the EPS or may be a detachable cable. In either
case, the terminating USB Micro-B plug
– shall meet the USB-IF connector test requirements,
– shall be compliant to the USB Micro-B cables and connectors specification, Rev 1.01
(Micro-USB 1.01) and
– shall be rated to meet all electrical specifications.
An EPS provided with a detachable cable shall be equipped with an USB standard A
receptacle to connect to the EPS. The detachable cable assembly, supplied for use with the
EPS, shall have Standard A and USB Micro-B plugs and meet the USB-IF cable assembly test
requirements for compliant usage of connectors and cables in Micro-USB 1.01.
The above requirement also applies to cables used as an adaptor, i.e. when the USB Micro-B
is connected to the mobile telephone by an adaptor where the mobile telephone does not
have a Micro-USB interface.
5.2 AC input characteristic
The EPS shall meet Class II requirements of IEC 60950-1 with a maximum touch current not
exceeding 90 µA.
The EPS AC input shall operate over the following range:
– voltage range: the rated input voltage range should be at least 100 V to 230 V;
– frequency: 50 Hz to 60 Hz.
5.3 Environmental specification
The EPS operational environmental range over which the DC output characteristics defined in
5.4 shall be maintained, shall be
– temperature range: 0 °C to +45 °C,
– relative humidity: up to 90 %.

62684  IEC:2011 – 7 –
5.4 DC output characteristic
For EPS with permanently connected cables, the voltage at the USB Micro-B plug of the EPS

shall be 5 V ± 0,25 V with no load current to rated output current.

For EPS with detachable cables the voltage at the USB standard A receptacle shall be

(5 ± 0,25) V with no load current to rated output current. The maximum voltage drop caused

by the detachable cable shall be 125 mV when measured across the power pair pins of the

USB Micro-B plug, while drawing 500 mA from a nominal 5 V source.

The minimum rated output current shall be 500 mA.

The maximum rated output current shall be 1 500 mA.
The maximum output current at any voltage shall not be greater than 1 500 mA.
The ripple voltage on the output with a no load current to maximum rated output current shall
be no more than 80 mV peak-to-peak measured at 20 MHz bandwidth using the test method
as defined in Clause 6.
The common mode noise at the DC output when measured in accordance with Clause 6 shall
be
– AC voltage frequency component: 95 V peak-to-peak maximum,
– EPS switching frequency component:
a) the peak-to-peak voltage measured in the frequency range of 1 kHz to 100 kHz shall
not exceed 1 V peak-to-peak;
b) the peak-to-peak voltage measured in the frequency range of 100 kHz to 400 kHz shall
not exceed 200 mV peak-to-peak;
c) the peak-to-peak voltage measured in the frequency range of 400 kHz to 1 MHz shall
not exceed 39 mV peak-to-peak;
d) the peak-to-peak voltage measured in the frequency range of 1 MHz to 100 MHz shall
not exceed 20 mV peak-to-peak;
e) the occupied bandwidth of the fundamental measured with peak hold shall not exceed
±10 % of the EPS switching frequency;
f) the maximum amount of slew within any 100 ns window is 1,25 V peak-to-peak.
NOTE Noise in the FM and TV bands from the EPS should be minimized as it may cause interference to any FM
radio and/or TV function of the mobile telephone to which the EPS is connected. At the time of writing, no suitable
method of measurement has been defined and is the subject of ongoing work.

5.5 Protection
The maximum output voltage under Single Fault Condition shall not exceed 9 V.
The maximum output current under Single Fault Condition shall not exceed 3 A.
The EPS shall not be damaged as a result of either any over-temperature condition of the
EPS circuitry components which is not due to a fault of the EPS, or any output short circuit
condition. If shut down occurs, the unit shall not resume operation until AC power is cycled or
the failure condition causing the shut down has been removed.
5.6 EPS detection
To enable the mobile telephone to detect that it is connected to an EPS, the EPS shall meet
the USB-IF charging port test requirements for a dedicated charging port as defined in USB
Battery Charging Specification, Revision 1.1 (BC 1.1), Section 4.1 ‘Charging Port’.

– 8 – 62684  IEC:2011
The top level requirements are

– the EPS shall short the D+ and D- lines with a resistance not greater than 200 Ω,

– the resistance between the D+ or D- lines of the EPS and either Vbus or GND shall be

greater than 2 MΩ,
– the capacitance between the D+ or D- lines of the EPS and either Vbus or GND shall be

less than 1 nF.
5.7 Reliability
Durability of the plug and receptacles shall, as a minimum, meet the performance as given in

Table 3-1 of Universal Serial Bus, Cables and Connectors Class Document, Revision
2.0 August 2007:
– USB Micro-B plug: 10 000 cycles;
– Standard-A receptacle and plug: 10 000 cycles (ruggedized Standard-A).
6 Testing requirements
6.1 General
The requirements in Clause 5 have been developed to try to ensure that common EPS
perform correctly with any data enabled mobile phone to which they may be connected. Most
of the requirements can be verified using existing and well understood measurement
techniques which do not need defining in this International Standard.
The common mode voltage and ripple voltage at the DC output can be affected by the load on
the output of the EPS. For these parameters, the following test procedures shall be used.
6.2 Common mode voltage of the DC output
a) The EPS shall be connected to an AC power source wherein one or the other of the AC
mains is a neutral conductor, bonded to earth either at the upstream service transformer,
or locally in the laboratory environment.
Rationale
1) In most installations, it is required that one or the other of the AC mains is bonded to
earth at the upstream service transformer, and is termed the “neutral” or “return”
conductor; and
2) common-mode noise is manifested to the greatest extent when one or the other of AC
mains is bonded as such.
NOTE Many synthesized AC power supplies produce isolated AC outputs with no connection to earth.

Common-mode noise measurements are reduced is such situations, since the EPS common-mode noise
source has no real ground reference. Therefore, isolated AC outputs should have one or the other of the
output lines bonded to local ground or neutral. Similar considerations exist when using variable
autotransformers to produce the required AC line voltage.
b) The EPS shall be powered by 253 V AC - 1 % / + 0 % at 50 Hz ± 1 %.
Rationale
1) Common-mode noise amplitude is greater at higher AC mains voltage, and
2) AC mains voltages that may be seen by the EPS and its associated mobile terminal
are permitted to range up to 230 V AC + 10 %;
c) The EPS shall be loaded with a (10 ± 0,01) Ω resistive load, between the Vbus and GND
terminals of the USB Micro-B plug. For an EPS with a detachable cable, a 1 m cable
length shall be used during testing. To provide the equivalent capacitive load of a generic
mobile terminal, a conductive metal box measuring
(100 ± 1) mm × (60 ± 1) mm × (12 ± 1) mm shall be connected to the GND terminal of the
USB Micro-B plug. The EPS cable, resistor, and simulated mobile terminal shall be kept at

62684  IEC:2011 – 9 –
least 30 cm from nearby metal structures and shall be supported upon a low-dielectric

material, such as Styrofoam or corrugated cardboard box.

Rationale
While the amplitude and frequency of common-mode noise produced by a given EPS will

dynamically change over the operational modes and battery charging cycle, it is necessary
to create a common test load which will give repeatable measurements. The resistive

portion of the load will cause a certain frequency and amplitude of common-mode noise

from a given EPS, while the USB cable and simulated mobile terminal contribute a

distributed shunt capacitance to earth, which in normal use, serves to attenuate the

common mode noise, as in a capacitive AC voltage divider. Without this latter provision,

any common mode noise test is generally too restrictive, and is not realistic.

d) The common-mode noise waveform shall be measured at the GND terminal of the USB
Micro-B plug. The sampling probe shall have an input impedance of 10 MΩ in parallel with
8 pF.
Rationale
Common-mode noise is that electrical signal present at the output negative conductor with
respect to earth. The probe impedance, as well as shunt capacitance to the test bench,
does artificially load, and therefore attenuate, the measured common-mode noise.
6.3 Ripple voltage at the DC output
a) The USB Micro-B plug of the EPS shall be connected to a load representative of a mobile
phone with the following characteristics:
– USB Micro-B receptacle connection;
– a capacitance of (1 ± 0,1) µF between the Vbus and GND terminals of the USB
Micro-B receptacle. This capacitance shall have a typical ESR of 0,01 Ω at 1 MHz and
0,6 Ω at 10 kHz;
– a variable or switchable resistance between the Vbus and GND terminals of the USB
Micro-B receptacle. It shall be possible to select a resistance of 10 kΩ to simulate a no
load condit
...