SIST EN 63002:2018
(Main)Identification and communication interoperability method for external power supplies used with portable computing devices (IEC 63002:2016)
Identification and communication interoperability method for external power supplies used with portable computing devices (IEC 63002:2016)
This International Standard defines interoperability guidelines for external power supplies
used with portable computing devices that implement the IEC 62680-1-2: Universal Serial Bus
Power Delivery Specification with the IEC 62680-1-3: Universal Serial Bus Interfaces for data
and power-Common Components- Type-CTM Type-C Cable and Connector Specification.
This International Standard defines normative requirements for an EPS to ensure
interoperability, in particular it specifies the data communicated from an EPS to a portable
computing device (Figure 1). The scope does not apply to all aspects of an EPS. This
International Standard does not specify normative requirements for the portable computing
device but provides recommendations for the behaviour of a portable computing device when
used with an EPS compliant with this International Standard.
This International Standard specifies the data objects used by a portable computing system
using IEC 62680-1-2 to understand the identity, design and performance characteristics, and
operating status of an external power supply. This International Standard is applicable to
external power supplies under 100 watts for portable computing devices, with a focus on
power delivery application for notebook computers, tablets, smartphones and other related
multimedia devices.
This International Standard relies on established mechanical and electrical specifications, and
communication protocols established by IEC 62680-1-2 and IEC 62680-1-3. This International
Standard proposes methods supported by IEC 62680-1-2 to mitigate problems caused by the
connection of untested combinations of EPS and portable computing devices with the aim of
improving consumer satisfaction.
In addition, as given in Annex C, this International Standard provides interoperability
guidelines for an EPS supporting charging using USB Type-C current when IEC 62680-1-2
functionality is not enabled. Considerations for captive and removable cable are presented in
Annex B.
An EPS is expected to follow the applicable global standards and regulatory compliance
requirements. Examples of those standards are given in Annex F.
Identifikation und Kommunikation Interoperabilitäts-Verfahren für externe Netzteile in tragbaren Computern (IEC 63002:2016)
Méthode d'identification et d'interopérabilité des communications des alimentations externes utilisées avec les dispositifs informatiques portatifs (IEC 63002:2016)
L'IEC 63002:20016 définit les lignes directrices en matière d'interopérabilité des alimentations externes utilisées avec les dispositifs informatiques portatifs mis en oeuvre dans le cadre de l'IEC 62680-1-2: Universal Serial Bus Power Delivery Specification avec l'IEC 62680-1-3: Universal Serial Bus Interfaces for data and power - Common Components - Type-CTM Type-C Cable and Connector Specification (disponible en anglais seulement). Elle spécifie les objets de données utilisés par un système informatique portatif s'appuyant sur l'IEC 62680-1-2 pour appréhender les caractéristiques d'identité, de conception et de performances, ainsi que l'état de fonctionnement d'une alimentation externe. La présente Norme internationale s'applique à des alimentations externes de moins de 100 watts destinées à des dispositifs informatiques portatifs, en mettant l'accent sur l'application de distribution de puissance pour les ordinateurs portables, les tablettes, les terminaux de poche et autres dispositifs multimédia connexes.
Postopek identifikacije in interoperabilnosti komunikacij zunanjih napajalnikov, ki se uporabljajo pri prenosnih računalniških napravah (IEC 63002:2016)
Specifikacija za dovajanje moči s standardom IEC 62680-1-3: vmesniki USB za podatkovne in močnostne komponente tipa CTM, specifikacija za kable in priključke tipa C.
Ta mednarodni standard določa normativne zahteve za EPS (zunanji napajalnik) za namene zagotavljanja interoperabilnosti; določa zlasti podatke, posredovane iz zunanjega napajalnika v prenosno računalniško napravo (slika 1). Področje uporabe se ne uporablja za vse vidike zunanjega napajalnika. Ta mednarodni standard ne določa normativnih zahtev za prenosno računalniško napravo, temveč podaje priporočila za delovanje prenosne računalniške naprave, kadar se uporablja z zunanjim napajalnikom v skladu s tem mednarodnim standardom.
Ta mednarodni standard določa podatkovne objekte, ki jih uporablja prenosni računalniški sistem v skladu s standardom IEC 62680-1-2 za razumevanje identitete, zasnove in zmogljivosti ter stanja delovanja zunanjega napajalnika. Ta mednarodni standard se uporablja za zunanje napajalnike z močjo manj kot 100 W za prenosne računalniške naprave, s poudarkom na zagotavljanju moči prenosnim računalnikom, tabličnim računalnikom, pametnim telefonom in drugim povezanim večpredstavnostnim napravam.
Ta mednarodni standard temelji na uveljavljenih mehanskih in električnih specifikacijah ter komunikacijskih protokolih, ki jih določata IEC 62680-1-2 in IEC 62680-1-3. Ta mednarodni standard predlaga metode, ki jih podpira IEC 62680-1-2, za zmanjšanje težav, ki jih povzroča povezava nepreizkušenih kombinacij zunanjih napajalnikov in prenosnih računalniških naprav s ciljem povečati zadovoljstvo potrošnikov.
Poleg tega ta mednarodni standard, kot je podano v dodatku C, določa smernice glede interoperabilnosti za polnjenje, ki podpira uporabo zunanjega napajalnika z uporabo toka prek priključka USB tipa C, kadar funkcionalnost IEC 62680-1-2 ni omogočena. Vidiki glede kaptivnega in odstranljivega kabla so predstavljeni v dodatku B.
Zunanji napajalnik mora izpolnjevati določila ustreznih globalnih standardov in zahteve glede skladnosti s predpisi. Primeri teh standardov so navedeni v dodatku F.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 63002:2018
01-februar-2018
3RVWRSHNLGHQWLILNDFLMHLQLQWHURSHUDELOQRVWLNRPXQLNDFLM]XQDQMLKQDSDMDOQLNRYNL
VHXSRUDEOMDMRSULSUHQRVQLKUDþXQDOQLãNLKQDSUDYDK ,(&
Identification and communication interoperability method for external power supplies
used with portable computing devices (IEC 63002:2016)
Identifikation und Kommunikation Interoperabilitäts-Verfahren für externe Netzteile in
tragbaren Computern (IEC 63002:2016)
Méthode d'identification et d'interopérabilité des communications des alimentations
externes utilisées avec les dispositifs informatiques portatifs (IEC 63002:2016)
Ta slovenski standard je istoveten z: EN 63002:2017
ICS:
31.020 Elektronske komponente na Electronic components in
splošno general
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
SIST EN 63002:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 63002:2018
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SIST EN 63002:2018
EUROPEAN STANDARD EN 63002
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2017
ICS 31.020; 35.200
English Version
Identification and communication interoperability method for
external power supplies used with portable computing devices
(IEC 63002:2016)
Méthode d'identification et d'interopérabilité des Identifikation und Kommunikation Interoperabilitäts-
communications des alimentations externes utilisées avec Verfahren für externe Netzteile in tragbaren Computern
les dispositifs informatiques portatifs (IEC 63002:2016)
(IEC 63002:2016)
This European Standard was approved by CENELEC on 2016-11-09. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 63002:2017 E
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SIST EN 63002:2018
EN 63002:2017
European foreword
The text of document 100/2595A/CDV, future edition 1 of IEC 63002, prepared by Technical Area 14
"Interfaces and methods of measurement for personal computing equipment", of IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 63002:2017.
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2017-09-03
national level by publication of an identical national
standard or by endorsement
(dow) 2020-03-03
• latest date by which the national standards conflicting with
the document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 63002:2016 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61000-4-11:2004 NOTE Harmonized as EN 61000-4-11:2004 (not modified).
IEC 62623 NOTE Harmonized as EN 62623.
IEC 62680-1-1 NOTE Harmonized as EN 62680-1-1.
IEC 62680-1-2 NOTE Harmonized as EN 62680-1-2.
IEC 62680-1-3 NOTE Harmonized as EN 62680-1-3.
IEC 62680-2-1 NOTE Harmonized as EN 62680-2-1.
1)
IEC 62680-3-1 NOTE Harmonized as EN 62680-3-1 .
IEC 62684 NOTE Harmonized as EN 62684.
1)
To be published.
2
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SIST EN 63002:2018
EN 63002:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60950-1 - Information technology equipment - EN 60950-1 -
Safety -
Part 1: General requirements
IEC 62368-1 - Audio/video, information and EN 62368-1 -
communication technology equipment -
Part 1: Safety requirements
IEC 62680-1-2 - Universal serial bus interfaces for data EN 62680-1-2 -
and power -
Part 1-2: Common components - USB
Power Delivery specification
IEC 62680-1-3 - Universal serial bus interfaces for data EN 62680-1-3 -
and power -
Part 1-3: Universal Serial Bus
interfaces - Common components - USB
Type-C™ cable and connector
specification
3
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SIST EN 63002:2018
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SIST EN 63002:2018
IEC 63002
®
Edition 1.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Identification and communication interoperability method for external power
supplies used with portable computing devices
Méthode d'identification et d'interopérabilité des communications des
alimentations externes utilisées avec les dispositifs informatiques portatifs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.020; 35.200 ISBN 978-2-8322-3648-2
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 63002:2018
– 2 – IEC 63002:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 9
4 Important characteristics of an external power supply . 9
4.1 General . 9
4.2 Positive identification of a unique EPS model . 9
4.3 Static characteristics of the external power supply performance and design . 10
4.3.1 General . 10
4.3.2 Load current step performance of the EPS . 10
4.3.3 Holdup time . 10
4.3.4 Limited power source (LPS) compliance . 11
4.3.5 Touch current . 11
4.3.6 Minimum capabilities for peak current and overcurrent protection . 11
4.3.7 Surface temperature of the enclosure of the EPS . 12
4.3.8 Overvoltage protection in the EPS . 12
Annex A (informative) Open issues related to arbitrary combinations of EPS and
portable computing device . 13
A.1 EMC, safety and performance . 13
A.2 Authentication, attestation, and data integrity protection . 13
A.3 Conducted noise from the EPS . 13
Annex B (informative) Considerations regarding EPS cable . 14
Annex C (informative) Recommended capabilities for EPS and legacy support . 15
Annex D (informative) Example usage scenarios of enhanced reporting from the EPS . 16
D.1 General . 16
D.2 Unique identification of the EPS . 16
D.3 Identification of voltage regulation, load current step and slew rate . 16
D.4 Load current step magnitude and slew rate capability . 16
D.5 Holdup time . 17
D.6 Low touch current reporting . 17
D.7 Peak current capability . 17
D.8 Surface temperature of the EPS . 17
Annex E (informative) Common charging interoperability use cases . 18
E.1 General . 18
E.2 Examples of device use cases . 18
E.2.1 Smartphone . 18
E.2.2 Higher power portable computing devices (tablets, notebook computers,
etc.) . 18
E.3 Examples of consumer use cases . 18
Annex F (informative) Conformance and market considerations . 20
F.1 General . 20
F.2 Summary of reported items and test references . 20
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IEC 63002:2016 © IEC 2016 – 3 –
F.3 USB-IF Compliance Program . 21
F.4 General regulatory compliance for EPS . 21
F.5 Other considerations for system testing . 22
F.6 After-market firmware updates to EPS . 22
Bibliography . 23
Figure 1 – Scope of the identification and communication method . 7
Figure 2 – Measurement of holdup time . 11
Table F.1 – Summary of reported parameters from EPS to portable computing device . 20
Table F.2 – Examples of current regulations and standards in the US and EU
applicable to external power supplies used with portable computing devices (non-
exhaustive list) . 22
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SIST EN 63002:2018
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IDENTIFICATION AND COMMUNICATION INTEROPERABILITY
METHOD FOR EXTERNAL POWER SUPPLIES USED
WITH PORTABLE COMPUTING DEVICES
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 63002 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.
The text of this standard is based on the following documents:
CDV Report on voting
100/2595A/CDV 100/2700/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.
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SIST EN 63002:2018
IEC 63002:2016 © IEC 2016 – 5 –
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.
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SIST EN 63002:2018
– 6 – IEC 63002:2016 © IEC 2016
INTRODUCTION
The objective of this International Standard is to support interoperability of external power
supplies used with the increasing variety of portable computing devices that implement the
1
IEC 62680-1-2: USB Power Delivery with the IEC 62680-1-3: USB Type-C™ connector
standards. Broad market adoption of this International Standard is expected to make a
significant contribution to the global goals of consumer convenience and re-usability of power
supplies by building on the global market ecosystem of IEC 62680 compliant devices and
facilitating interoperability across different product categories.
IEC 62680-1-2 is expected to enjoy significant adoption in global markets for all kinds of
portable computing devices requiring less than 100 watts including notebook computers,
tablets, smartphones and other related devices. This International Standard enables the
reporting of the identity and power characteristics of external supplies supported by
IEC 62680-1-2 (USB Power Delivery) and specifies additional interoperability guidelines for
external power. The method for identification of a specific external power supply (EPS) will
enable equipment manufacturers to ensure compliant operation of an EPS using IEC 62680-1-
2; and promotes data communication that can be used by the portable computing device to
predict and mitigate interoperability concerns when an unfamiliar or incompatible external
power supply is connected to the device by a user.
This International Standard specifies the minimum technical requirements for interoperability
and includes recommendations for EPS functionality and the portable computing device. The
approach taken by this International Standard, focusing on common charging interoperability,
will allow manufacturers to innovate in aspects such as design, system performance, and
energy efficiency.
This International Standard also provides important information regarding consumer safety,
system reliability as well as relevant global standards and regulatory compliance.
Other international and regional standards, recommendations and regulatory policies for
“universal adapters” or “common product chargers” that reference this International Standard
should take into account open technical and regulatory compliance issues that are associated
with untested or arbitrary combinations of EPS and devices such as those identified in
Annex A. For clarity, this International Standard does not take the approach of specifying
“universal” or “common product adapters” because of these open issues and limitations to
satisfy market requirements. Instead, it focuses on interoperability specifications in order to
support global industry in developing interoperable charging solutions that meet regulatory
compliance and market requirements.
____________
TM TM
1
USB Type-C and USB-C are trademarks of the Universal Serial Bus Implementers Forum (USB-IF).
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SIST EN 63002:2018
IEC 63002:2016 © IEC 2016 – 7 –
IDENTIFICATION AND COMMUNICATION INTEROPERABILITY
METHOD FOR EXTERNAL POWER SUPPLIES USED
WITH PORTABLE COMPUTING DEVICES
1 Scope
This International Standard defines interoperability guidelines for external power supplies
used with portable computing devices that implement the IEC 62680-1-2: Universal Serial Bus
Power Delivery Specification with the IEC 62680-1-3: Universal Serial Bus Interfaces for data
TM
and power-Common Components- Type-C Type-C Cable and Connector Specification.
This International Standard defines normative requirements for an EPS to ensure
interoperability, in particular it specifies the data communicated from an EPS to a portable
computing device (Figure 1). The scope does not apply to all aspects of an EPS. This
International Standard does not specify normative requirements for the portable computing
device but provides recommendations for the behaviour of a portable computing device when
used with an EPS compliant with this International Standard.
External Power Supply Portable Computing Device
Battery
Operational, Safety, Reliability Operational, Safety, Reliability
Operational, Safety, Reliability
standards. National and standards. National and
standards. National and
International standards International standards
International standards
hardware specifications
battery specifications
EPS Status
USB-PD Power Protection/Safety
EPS USB-PD
Battery Cell
communication management elements
Characteristics communication
EPS to Portable Computing Device
Identification and Control Method
IEC
Figure 1 – Scope of the identification and communication method
This International Standard specifies the data objects used by a portable computing system
using IEC 62680-1-2 to understand the identity, design and performance characteristics, and
operating status of an external power supply. This International Standard is applicable to
external power supplies under 100 watts for portable computing devices, with a focus on
power delivery application for notebook computers, tablets, smartphones and other related
multimedia devices.
This International Standard relies on established mechanical and electrical specifications, and
communication protocols established by IEC 62680-1-2 and IEC 62680-1-3. This International
Standard proposes methods supported by IEC 62680-1-2 to mitigate problems caused by the
connection of untested combinations of EPS and portable computing devices with the aim of
improving consumer satisfaction.
In addition, as given in Annex C, this International Standard provides interoperability
guidelines for an EPS supporting charging using USB Type-C current when IEC 62680-1-2
functionality is not enabled. Considerations for captive and removable cable are presented in
Annex B.
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SIST EN 63002:2018
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An EPS is expected to follow the applicable global standards and regulatory compliance
requirements. Examples of those standards are given in Annex F.
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 62680-1-2, Universal Serial Bus interfaces for data and power – Part 1-2: Common
components – USB Power Delivery Specification
IEC 62680-1-3, Universal Serial Bus interfaces for data and power –Part 1-3: Common
TM
components –USB Type-C Cable and Connector Specification
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
vendor identification
VID
unique 16-bit unsigned value assigned by the USB-IF to a given vendor
3.1.2
portable computing device
computing device that is easily moved and can operate on battery power
3.1.3
power source
device designed to comply with a IEC 62680-1-2 device that supplies power over V
BUS
3.1.4
power sink
device designed to comply with IEC 62680-1-2 that receives and consumes power
EXAMPLE Portable computing device.
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IEC 63002:2016 © IEC 2016 – 9 –
3.1.5
external power supply
EPS
equipment contained in a separate physical enclosure external to the computer casing and
designed to convert mains power supply to lower DC voltage(s) for the purpose of powering
the computer
Note 1 to entry: An external power supply is not built into the device in a way that the power consuming device
inherently knows the identity of the power supply.
3.2 Abbreviated terms
AC alternating current
DC direct current
V voltage, V
A current, A
W watt
Hz hertz
IoC contracted operating current in IEC 62680-1-2
LPS limited power source
VAC volts alternating current
EPS external power supply
USB universal serial bus
USB PD universal serial bus power delivery
USB-IF Universal Serial Bus Implementers Forum
PDO power data object
VID vendor identification
PID product identification
4 Important characteristics of an external power supply
4.1 General
Untested combinations of an EPS and a portable computing device will benefit from some
reporting of the EPS identity, characteristics and status to the portable computing device. The
portable computing device is recommended to use such information to confirm operation of
the EPS, modify its operation with the EPS, or to reject usage of the EPS. Examples of
common usage cases expected for EPS are given in Annex E, and examples of the
application of the EPS identity and characteristics in Annex D.
4.2 Positive identification of a unique EPS model
The specific model number of the EPS might be recognized by the portable computing device
to allow optimized and compliant operation. The portable computing device can benefit by the
ability to distinguish whether the power supply is generic or known.
The hardware version might affect the quality and performance of the EPS. Some provision
reporting the date of manufacture or a hardware version allows the portable computing device
to identify an EPS whose performance characteristics might vary.
The EPS shall use the USB-IF VID to identify its specific vendor. The EPS should also report
a PID unique to the model of the EPS. Lastly, the OEM may report information that helps
identify hardware version of the model of the EPS or serial number. The contents of the OEM-
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specific identifier and hardware version are not standardized by this International Standard,
but might be read by any portable computing device.
4.3 Static characteristics of the external power supply performance and design
4.3.1 General
IEC 62680-1-2 enables identification of the voltage and power capabilities of the power
source and also some key electrical parameters for voltage tolerance. This International
Standard extends the range of the EPS capabilities that are communicated to the portable
computer.
4.3.2 Load current step performance of the EPS
The power consumption of a portable computing device can change dynamically. The ability
of the EPS to regulate its voltage output might be important if the portable computing device
is sensitive to fluctuations in voltage. Transient changes in the system load with a fixed-
voltage EPS will result in changes to the load current from the EPS. The ability of the EPS to
respond to transient changes in power sink load is k
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