IEC 62684:2018

IEC 62684 ®
Edition 2.0 2018-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Interoperability specifications of common external power supply supplies (EPS)
for use with data-enabled mobile telephones

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.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC 62684 ®
Edition 2.0 2018-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Interoperability specifications of common external power supply supplies (EPS)

for use with data-enabled mobile telephones

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.200; 35.100.05; 35.200 ISBN 978-2-8322-5377-9

– 2 – IEC 62684:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 6
4 EPS specification . 6
4.1 DC plug connector specification . 6
4.2 AC input characteristic . 7
4.3 Environmental specification . 7
4.4 DC output characteristics . 7
4.5 Protection . 7
4.6 EPS detection . 8
4.7 Reliability . 8
5 Testing requirements . 9
5.1 General . 9
Common mode voltage of the DC output .
5.2 Ripple voltage at the DC output . 9
Bibliography . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INTEROPERABILITY SPECIFICATIONS OF COMMON
EXTERNAL POWER SUPPLY SUPPLIES (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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.

– 4 – IEC 62684:2018 RLV © IEC 2018
International Standard IEC 62684 has been prepared by technical area 14: Interfaces and
methods of measurement for personal computing equipment, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
This second edition cancels and replaces the first edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Clause 1 is modified to include updated references to IEC Universal Serial Bus interface
standards;
b) Clause 2 is expanded to include references to IEC Universal Serial Bus interface
standards;
c) Subclause 4.1 is expanded to include requirements for non USB Micro-B plug DC plug
connectors;
d) Subclause 4.4 is modified to remove obsolete requirements for common mode noise and
reference requirements of IEC Universal Serial Bus interface standards;
e) Subclause 4.5 is modified to reference appropriate safety standards.
The text of this standard is based on the following documents:
CDV Report on voting
100/2872/CDV 100/2966/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTEROPERABILITY SPECIFICATIONS OF COMMON
EXTERNAL POWER SUPPLY SUPPLIES (EPS) FOR USE WITH
DATA-ENABLED MOBILE TELEPHONES

1 Scope
This document 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 external power supply.
Safety and EMC aspects are not covered by this document. Safety is covered by IEC 60950-1
or IEC 62368-1 and EMC is covered by EN 301 489-34 regional /national standards.
This document defines interoperability based on legacy USB technologies and does not cover
charging interfaces that implement IEC 62680-1-3 (USB Type-C™ ), IEC 62680-1-2 (USB PD)
and IEC 63002.
NOTE: The content of this document is based on Annex II dated 12 January 2010 to the MoU regarding
Harmonisation of a Charging Capability for Mobile Phone.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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
IEC 62368-1, Audio/video, information and communication technology equipment – Part 1:
Safety requirements
IEC 62680-1-1, Universal Serial Bus interfaces for data and power – Part 1-1: Common
components – USB Battery Charging Specification, Revision 1.2
IEC 62680-2-1:2015, Universal Serial Bus interfaces for data and power – Part 2-1: Universal
Serial Bus specification, Revision 2.0
IEC 62680-2-2, Universal Serial Bus interfaces for data and power – Part 2-2: USB Micro-USB
Cables and Connectors Specification, Revision 1.01
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 Type-C™ is a trademark of the USB Implementers Forum (USB-IF). This information is given for the
convenience of users of this document and does not constitute an endorsement by IEC of this product.

– 6 – IEC 62684:2018 RLV © IEC 2018
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, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
adaptor adapter
device for connecting from a USB Micro-B receptacle/plug defined in IEC 62680-2-2 to a
specific non Micro-USB connector
Note 1 to entry: An adapter can also be a cable.
3.2 Abbreviated terms
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
4 EPS specification
4.1 DC plug connector specification
The cable assembly supplied with the EPS shall terminate in a USB Micro-B plug, defined in
IEC 62680-2-2. 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 be compliant with the
USB Micro-B cables and connectors specification, IEC 62680-2-2.
– 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.

The cable assembly supplied with the EPS may also terminate in a non USB Micro-B plug if a
manufacturer makes available an adaptor from the Micro-USB connector of a common EPS to
a specific non-Micro-USB socket in the mobile phone.
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 USB 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
in IEC 62680-2-2.
The above requirement also applies to a 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.
4.2 AC input characteristic
The EPS shall meet Class II the requirements of IEC 60950-1 or IEC 62368-1 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 covers the range
100 V to 230 V;
– frequency: 50 Hz to 60 Hz.
4.3 Environmental specification
The EPS operational environmental range, over which the DC output characteristics defined
in 4.4 shall be maintained, shall be
– temperature range: 0 °C to +45 35 °C,
– relative humidity:  up to 90 %.
4.4 DC output characteristics
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 DC output voltage of the EPS shall be as specified in IEC 62680-2-1. The cable voltage
drop shall be as specified in IEC 62680-2-1.
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 when measured in accordance with the test method defined in 5.2.
___________
Memorandum of Understanding regarding Harmonisation of a Charging Capability for Mobile Phones.
5 June 2009, clause 4.2.1.
– 8 – IEC 62684:2018 RLV © IEC 2018
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.
Proprietary methods for faster charging at higher voltages and/or currents are permitted,
provided that interoperability according to IEC 62680-1-1 is guaranteed when the peer
connected device (EPS or the mobile telephone) supports only IEC 62680-1-1.
4.5 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.
The EPS shall comply with all appropriate safety standards, for example as specified by
IEC 60950-1 or IEC 62368-1.
4.6 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’
IEC 62680-1-1.
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.
4.7 Reliability
The 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 Table 6-7 of IEC 62680-2-1:2015.
– USB Micro-B plug: 10 000 cycles;
– Standard-A receptacle and plug: 10 000 cycles (ruggedized Standard-A).
5 Testing requirements
5.1 General
The requirements in Clause 5 have been developed to try to ensure that common EPSs
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 document.
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 test procedures outlined in 5.2 shall be
used.
6.2 Common mode voltage of the DC out
...

IEC 62684 ®
Edition 2.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Interoperability specifications of common external power supplies (EPS) for use
with data-enabled mobile telephones

Spécifications d'interopérabilité des alimentations externes (EPS) communes
destinées aux 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 l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 18 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) 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 IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Découvrez notre puissant moteur de recherche et consultez
webstore.iec.ch/advsearchform gratuitement tous les aperçus des publications. Avec un
La recherche avancée permet de trouver des publications IEC abonnement, vous aurez toujours accès à un contenu à jour
en utilisant différents critères (numéro de référence, texte, adapté à vos besoins.
comité d’études, …). Elle donne aussi des informations sur les
projets et les publications remplacées ou retirées. Electropedia - www.electropedia.org

Le premier dictionnaire d'électrotechnologie en ligne au monde,
IEC Just Published - webstore.iec.ch/justpublished
avec plus de 22 000 articles terminologiques en anglais et en
Restez informé sur les nouvelles publications IEC. Just
français, ainsi que les termes équivalents dans 16 langues
Published détaille les nouvelles publications parues.
additionnelles. Egalement appelé Vocabulaire
Disponible en ligne et une fois par mois par email.
Electrotechnique International (IEV) en ligne.

Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC online collection - oc.iec.ch

IEC 62684 ®
Edition 2.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Interoperability specifications of common external power supplies (EPS) for use

with data-enabled mobile telephones

Spécifications d'interopérabilité des alimentations externes (EPS) communes

destinées aux téléphones mobiles avec service de données

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.200; 35.100.05; 35.200 ISBN 978-2-8322-9256-3

– 2 – IEC 62684:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 6
4 EPS specification . 6
4.1 DC plug connector specification . 6
4.2 AC input characteristic . 6
4.3 Environmental specification . 6
4.4 DC output characteristics . 7
4.5 Protection . 7
4.6 EPS detection . 7
4.7 Reliability . 7
5 Testing requirements . 7
5.1 General . 7
5.2 Ripple voltage at the DC output . 7
Bibliography . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INTEROPERABILITY SPECIFICATIONS OF COMMON
EXTERNAL POWER SUPPLIES (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 14: Interfaces and
methods of measurement for personal computing equipment, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
This second edition cancels and replaces the first edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Clause 1 is modified to include updated references to IEC Universal Serial Bus interface
standards;
b) Clause 2 is expanded to include references to IEC Universal Serial Bus interface
standards;
c) Subclause 4.1 is expanded to include requirements for non USB Micro-B plug DC plug
connectors;
– 4 – IEC 62684:2018 © IEC 2018
d) Subclause 4.4 is modified to remove obsolete requirements for common mode noise and
reference requirements of IEC Universal Serial Bus interface standards;
e) Subclause 4.5 is modified to reference appropriate safety standards.
The text of this standard is based on the following documents:
CDV Report on voting
100/2872/CDV 100/2966/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTEROPERABILITY SPECIFICATIONS OF COMMON
EXTERNAL POWER SUPPLIES (EPS) FOR USE WITH
DATA-ENABLED MOBILE TELEPHONES

1 Scope
This document 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 external power supply.
Safety and EMC aspects are not covered by this document. Safety is covered by IEC 60950-1
or IEC 62368-1 and EMC is covered by regional /national standards.
This document defines interoperability based on legacy USB technologies and does not cover
charging interfaces that implement IEC 62680-1-3 (USB Type-C™ ), IEC 62680-1-2 (USB PD)
and IEC 63002.
NOTE The content of this document is based on Annex II dated 12 January 2010 to the MoU regarding
Harmonisation of a Charging Capability for Mobile Phone.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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, Information technology equipment – Safety – Part 1: General requirements
IEC 62368-1, Audio/video, information and communication technology equipment – Part 1:
Safety requirements
IEC 62680-1-1, Universal Serial Bus interfaces for data and power – Part 1-1: Common
components – USB Battery Charging Specification, Revision 1.2
IEC 62680-2-1:2015, Universal Serial Bus interfaces for data and power – Part 2-1: Universal
Serial Bus specification, Revision 2.0
IEC 62680-2-2, Universal Serial Bus interfaces for data and power – Part 2-2: USB Micro-USB
Cables and Connectors Specification, Revision 1.01
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org
• ISO Online browsing platform: available at http://www.iso.org/obp
___________
USB Type-C™ is a trademark of the USB Implementers Forum (USB-IF). This information is given for the
convenience of users of this document and does not constitute an endorsement by IEC of this product.

– 6 – IEC 62684:2018 © IEC 2018
3.1.1
adapter
device for connecting from a USB Micro-B receptacle/plug defined in IEC 62680-2-2 to a
specific non Micro-USB connector
Note 1 to entry: An adapter can also be a cable.
3.2 Abbreviated terms
AC alternating current
DC direct current
EPS external power supply
ESR equivalent series resistance
EUT equipment under test
GND ground
USB Universal Serial Bus
4 EPS specification
4.1 DC plug connector specification
The cable assembly supplied with the EPS shall terminate in a USB Micro-B plug, defined in
IEC 62680-2-2. 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 be compliant with the
USB Micro-B cables and connectors specification, IEC 62680-2-2.
The cable assembly supplied with the EPS may also terminate in a non USB Micro-B plug if a
manufacturer makes available an adaptor from the Micro-USB connector of a common EPS to
a specific non-Micro-USB socket in the mobile phone.
An EPS provided with a detachable cable shall be equipped with a USB Standard-A
receptacle to connect to the EPS. The detachable cable assembly, supplied for use with the
EPS, shall have USB Standard-A and USB Micro-B plugs and meet the USB-IF cable
assembly requirements in IEC 62680-2-2.
The above requirement also applies to a cable 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.
4.2 AC input characteristic
The EPS shall meet the requirements of IEC 60950-1 or IEC 62368-1 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 covers the range 100 V to 230 V;
– frequency: 50 Hz to 60 Hz.
4.3 Environmental specification
The EPS operational environmental range, over which the DC output characteristics defined
in 4.4 shall be maintained, shall be
– temperature range: 0 °C to +35 °C,
– relative humidity:  up to 90 %.
___________
Memorandum of Understanding regarding Harmonisation of a Charging Capability for Mobile Phones.
5 June 2009, clause 4.2.1.
4.4 DC output characteristics
The DC output voltage of the EPS shall be as specified in IEC 62680-2-1. The cable voltage
drop shall be as specified in IEC 62680-2-1.
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 when measured in
accordance with the test method defined in 5.2.
Proprietary methods for faster charging at higher voltages and/or currents are permitted,
provided that interoperability according to IEC 62680-1-1 is guaranteed when the peer
connected device (EPS or the mobile telephone) supports only IEC 62680-1-1.
4.5 Protection
The EPS shall comply with all appropriate safety standards, for example as specified by
IEC 60950-1 or IEC 62368-1.
4.6 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 requirements for a Dedicated Charging Port as defined in
IEC 62680-1-1.
4.7 Reliability
The durability of the plug and receptacles shall, as a minimum, meet the performance as
given in Table 6-7 of IEC 62680-2-1:2015.
5 Testing requirements
5.1 General
The requirements in Clause 5 have been developed to try to ensure that common EPSs
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 document.
The ripple voltage at the DC output can be affected by the load on the output of the EPS. For
these parameters, the test procedures outlined in 5.2 shall be used.
5.2 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 condition and other resistances suitable to draw 25 %, 50 %, 75 % and 100 %
of the rated current of the EPS.

– 8 – IEC 62684:2018 © IEC 2018
b) Place the EUT into an envi
...