IEC 62637-1:2011

Battery charging interface for small handheld multimedia devices - Part 1: 2 mm barrel interface

IEC 62637-1:2011 defines a charging interface between small handheld multimedia devices and power-supply accessories, specifically chargers. Devices, which could be based on this standard may vary over time, but have to comply with the limited power available. The interface is a 2 mm barrel type charging interface. The French version of this standard has not been voted upon. This bilingual version (2011-07) replaces the English version.

Interface de charge de batterie pour petits appareils multimédia portables - Partie 1: Spécification de l'interface cylindrique 2 mm

La CEI 62637-1:2011 définit une interface de charge entre de petits appareils multimédia portables et des accessoires d'alimentation, en particulier des chargeurs. Les appareils selon la présente norme peuvent varier dans le temps, mais ils doivent rester dans la limite de la puissance disponible. L'interface est une interface de charge de type cylindrique 2 mm. La version française de cette norme n'a pas été soumise au vote. La présente version bilingue,publiée en 2011-07, correspond à la version anglaise.

General Information

• Status: Published
• Publication Date: 29-Mar-2011
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.99 - Other audio, video and audiovisual equipment
• ICS: 97.180 - Miscellaneous domestic and commercial equipment
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2011
• Completion Date: 30-Mar-2011

Standards Content (Sample)

IEC 62637-1 ®
Edition 1.0 2011-03
INTERNATIONAL
STANDARD
Battery charging interface for small handheld multimedia devices –
Part 1: 2 mm barrel interface
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.

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About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 62637-1 ®
Edition 1.0 2011-03
INTERNATIONAL
STANDARD
Battery charging interface for small handheld multimedia devices –
Part 1: 2 mm barrel interface
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
S
ICS 33.160.99; 97.180 ISBN 978-2-88912-398-8

– 2 – 62637-1  IEC:2011(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Abbreviations and symbols . 7
4 Specifications for 2 mm barrel interface . 7
4.1 General . 7
4.2 Temperature . 8
4.3 Voltage . 8
5 Electrical specification for 2 mm barrel type chargers . 8
5.1 Charger output capacitance . 8
5.2 Maximum transient voltage and current values . 8
5.3 Maximum output ripple voltage . 9
5.4 High-frequency voltage components at the charger output . 10
5.5 Feel current of AC chargers . 11
5.6 Charging voltage/current window . 11
5.7 Current linearity for chargers . 12
6 Accessories connected between the 2 mm barrel charger and the mobile device . 13
6.1 Accessory interfaces . 13
6.2 Electrical specifications for accessories . 14
6.3 Booting up the mobile device when connected to an accessory . 14
6.4 Charger identification . 14
7 Charger identification method for the 2 mm barrel interface . 15
8 Connectors for the 2 mm barrel interface . 15
8.1 Connectors . 15
8.2 Charging voltage polarity . 15
Annex A (normative) Artificial load . 17
Annex B (normative) Coupling/decoupling network . 18
Annex C (informative) Additional information on connectors for 2 mm barrel interface . 19
Bibliography . 21

Figure 1 – Scope of the charging interface standard . 6
Figure 2 – Maximum permitted charger output capacitance . 8
Figure 3 – Maximum duration of charging current overshoot and maximum voltage
undershoot . 9
Figure 4 – Maximum peak-to-peak ripple voltage . 10
Figure 5 – Maximum high-frequency output voltage components. 11
Figure 6 – Charging current/voltage window for 2 mm barrel type chargers . 12
Figure 7 – Current linearity specification example . 13
Figure 8 – Accessory/device interface . 14
Figure 9 – Charger identification voltages . 15
Figure 10 – General view of the 2 mm barrel charging plug . 16
Figure A.1 – Artificial load . 17
Figure B.1 – Coupling/decoupling network . 18

62637-1  IEC:2011(E) – 3 –
Figure C.1 – 2 mm barrel charging plug – Details. 19
Figure C.2 – 2 mm barrel charging receptacle – Details . 19
Figure C.3 – Bending durability . 20

Table 1 – Limits for maximum voltage and settling time . 9
Table 2 – Maximum ripple voltage in different frequency ranges . 10
Table 3 – Maximum conducted interference . 10
Table 4 – Electrical specification for accessory contacts . 14

– 4 – 62637-1  IEC:2011(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
BATTERY CHARGING INTERFACE FOR SMALL HANDHELD
MULTIMEDIA DEVICES –
Part 1: 2 mm barrel interface
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 62637-1 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
100/1673/CDV 100/1749/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

62637-1  IEC:2011(E) – 5 –
A list of all parts of the IEC 62637 series, under the general title Battery charging interface for
small handheld multimedia devices, can be found on the IEC website.
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.
A bilingual version of this publication may be issued at a later date.

– 6 – 62637-1  IEC:2011(E)
BATTERY CHARGING INTERFACE FOR SMALL HANDHELD
MULTIMEDIA DEVICES –
Part 1: 2 mm barrel interface
1 Scope
This part of IEC 62637 defines a charging interface between small handheld multimedia
devices and power-supply accessories, specifically chargers. Devices, which could be based
on this standard may vary over time, but have to comply with the limited power available .
The interface is a 2 mm barrel type charging interface. This standard does not include the
whole charger nor does it include the internal functions of the device. Chargers and devices
shall follow the applicable EMC and safety standards. The scope of this part of IEC 62637 is
illustrated in Figure 1.
Charger Battery
Mobile device
Operational, safety and
Operational, safety, Operational, safety and reliability
reliability standards
reliability standards standards,
National / International
National / International National / International Standards
Standards
Standards
EM SW
Charger HW component
Battery specifications
specifications specification EM IC
including protection circuitry
Protection Protection / safety Battery
Protection Charging
Energy
elements cell
elements
elements solution
Charger interface specification
- Electrical parameters
- Mechanical parameters
IEC  4
...

IEC 62637-1 ®
Edition 1.0 2011-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Battery charging interface for small handheld multimedia devices –
Part 1: 2 mm barrel interface
Interface de charge de batterie pour petits appareils multimédia portables –
Partie 1: Spécification de l'interface cylindrique 2 mm

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.

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

IEC Central Office
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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
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IEC 62637-1 ®
Edition 1.0 2011-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Battery charging interface for small handheld multimedia devices –
Part 1: 2 mm barrel interface
Interface de charge de batterie pour petits appareils multimédia portables –
Partie 1: Spécification de l'interface cylindrique 2 mm

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 33.160.99; 97.18 ISBN 978-2-88912-597-5

– 2 – 62637-1  IEC:2011
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Abbreviations and symbols . 7
4 Specifications for 2 mm barrel interface . 7
4.1 General . 7
4.2 Temperature . 8
4.3 Voltage . 8
5 Electrical specification for 2 mm barrel type chargers . 8
5.1 Charger output capacitance . 8
5.2 Maximum transient voltage and current values . 8
5.3 Maximum output ripple voltage . 9
5.4 High-frequency voltage components at the charger output . 10
5.5 Feel current of AC chargers . 11
5.6 Charging voltage/current window . 11
5.7 Current linearity for chargers . 12
6 Accessories connected between the 2 mm barrel charger and the mobile device . 13
6.1 Accessory interfaces . 13
6.2 Electrical specifications for accessories . 14
6.3 Booting up the mobile device when connected to an accessory . 14
6.4 Charger identification . 14
7 Charger identification method for the 2 mm barrel interface . 15
8 Connectors for the 2 mm barrel interface . 15
8.1 Connectors . 15
8.2 Charging voltage polarity . 15
Annex A (normative) Artificial load . 17
Annex B (normative) Coupling/decoupling network . 18
Annex C (informative) Additional information on connectors for 2 mm barrel interface . 19
Bibliography . 21

Figure 1 – Scope of the charging interface standard . 6
Figure 2 – Maximum permitted charger output capacitance . 8
Figure 3 – Maximum duration of charging current overshoot and maximum voltage
undershoot . 9
Figure 4 – Maximum peak-to-peak ripple voltage . 10
Figure 5 – Maximum high-frequency output voltage components. 11
Figure 6 – Charging current/voltage window for 2 mm barrel type chargers . 12
Figure 7 – Current linearity specification example . 13
Figure 8 – Accessory/device interface . 14
Figure 9 – Charger identification voltages . 15
Figure 10 – General view of the 2 mm barrel charging plug . 16
Figure A.1 – Artificial load . 17
Figure B.1 – Coupling/decoupling network . 18

62637-1  IEC:2011 – 3 –
Figure C.1 – 2 mm barrel charging plug – Details. 19
Figure C.2 – 2 mm barrel charging receptacle – Details . 19
Figure C.3 – Bending durability . 20

Table 1 – Limits for maximum voltage and settling time . 9
Table 2 – Maximum ripple voltage in different frequency ranges . 10
Table 3 – Maximum conducted interference . 10
Table 4 – Electrical specification for accessory contacts . 14

– 4 – 62637-1  IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
BATTERY CHARGING INTERFACE FOR SMALL HANDHELD
MULTIMEDIA DEVICES –
Part 1: 2 mm barrel interface
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 iden
...