SIST EN IEC 63254:2023

Management and interfaces for WPT - Device-to-device wireless charging (D2DWC) for mobile devices with wireless power TX/RX module (IEC 63254:2022)

This standard defines specification and control protocol of D2DWC module for using wireless power TX and RX functions by only one single device. And the related antenna physical design examples are presented in Annex A for sharing information. This standard propose D2DWC module circuit requirement which are consisted with the D2DWC main AP, D2DWC IC, EMT/WPT Antenna Unit and PMIC unit. In the Chapter 5, ‘Specifications and control protocol of D2DWC’, the register information and message protocols for WPT control are defined in order to implement the WPT TX function. In this standard, the interface and protocol in the wireless power process of the mobile device can be used in accordance with the corresponding wireless power transfer standard. Any wireless power transfer standard working inside 100 - 350 kHz frequency range can be included from the scope of this standard. This standard can be used to mobile wireless power transfer in mobile phones and other mobile devices, IoT, and micro-sensor industries and related application fields.

Management und Schnittstellen für WPT - Drahtloses Laden von Gerät zu Gerät (D2DWC) für mobile Geräte mit drahtlosem Power TX/RX-Modul (IEC 63254:2022)

Gestion et interfaces pour WPT - Chargement sans fil de dispositif à dispositif (D2DWC) pour dispositifs mobiles avec module TX/RX d'énergie sans fil (IEC 63254:2022)

L'IEC 63254:2022 définit la spécification et le protocole de contrôle du module D2DWC pour l'utilisation des fonctions TX et RX d'énergie sans fil par un dispositif unique. Les exemples de conceptions physiques d'antenne connexes pour le partage d'informations sont donnés à l'Annexe A.
Le présent document établit les exigences relatives au circuit du module D2DWC, qui comprend l'AP D2DWC principal, l'IC D2DWC, l'unité d'antenne EMT/WPT et l'unité PMIC. L'Article 5 définit les informations de registre et les protocoles de message pour le contrôle WPT pour la mise en œuvre de la fonction TX WPT.
Dans le présent document, l'interface et le protocole du processus d'alimentation sans fil du dispositif mobile peuvent être utilisés conformément à la norme de transfert d'énergie sans fil correspondante. Toute norme de transfert d'énergie sans fil applicable dans la plage de fréquences comprise entre 100 kHz et 350 kHz peut être incluse dans le domaine d'application du présent document.
Le présent document peut être utilisé pour le transfert d'énergie sans fil dans les téléphones mobiles et autres dispositifs mobiles, dans les dispositifs d'IoT, les industries de microcapteurs et les domaines d'application connexes.

Upravljanje in vmesniki za WPT - Brezžično polnjenje med napravami (D2DWC) za mobilne naprave z brezžično napajalno močjo modula TX/RX (IEC 63254:2022)

Ta standard opredeljuje specifikacijo in nadzorni protokol modula D2DWC za uporabo funkcij brezžičnega napajanja TX in RX s samo eno napravo. Povezani primeri fizične zasnove antene so predstavljeni v dodatku A za izmenjavo informacij. Ta standard predlaga zahteve za vezje modula D2DWC, sestavljeno iz AP D2DWC, D2DWC IC, antenske enote EMT/WPT in enote PMIC. V 5. poglavju »Specifikacije in nadzorni protokol D2DWC« so opredeljeni podatki o registru in sporočilni protokoli za nadzor WPT, da se izvede funkcija WPT TX. V tem standardu se vmesnik in protokol v procesu brezžičnega napajanja mobilne naprave lahko uporabljata v skladu z ustreznim standardom za brezžični prenos energije. Vsak standard za brezžični prenos energije, ki deluje v frekvenčnem območju 100–350 kHz, je mogoče vključiti na področje uporabe tega standarda. Ta standard je mogoče uporabiti za mobilni brezžični prenos energije v mobilnih telefonih in drugih mobilnih napravah, IoT in industriji mikro-senzorjev ter sorodnih področjih uporabe.

General Information

• Status: Published
• Public Enquiry End Date: 28-Mar-2021
• Publication Date: 06-Feb-2023
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Nov-2022
• Due Date: 14-Jan-2023
• Completion Date: 07-Feb-2023
• Ref Project: EN IEC 63254:2022 - Management and interfaces for WPT - Device-to-device wireless charging (D2DWC) for mobile devices with wireless power TX/RX module

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2023
Upravljanje in vmesniki za WPT - Brezžično polnjenje med napravami (D2DWC) za
mobilne naprave z brezžično napajalno močjo modula TX/RX (IEC 63254:2022)
Management and interfaces for WPT - Device-to-device wireless charging (D2DWC) for
mobile devices with wireless power TX/RX module (IEC 63254:2022)
Management und Schnittstellen für WPT - Drahtloses Laden von Gerät zu Gerät
(D2DWC) für mobile Geräte mit drahtlosem Power TX/RX-Modul (IEC 63254:2022)
Gestion et interfaces pour WPT - Chargement sans fil de dispositif à dispositif (D2DWC)
pour dispositifs mobiles avec module TX/RX d'énergie sans fil (IEC 63254:2022)
Ta slovenski standard je istoveten z: EN IEC 63254:2022
ICS:
29.200 Usmerniki. Pretvorniki. Rectifiers. Convertors.
Stabilizirano električno Stabilized power supply
napajanje
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63254

NORME EUROPÉENNE
EUROPÄISCHE NORM November 2022
ICS 29.240.99; 33.160.01
English Version
Management and interfaces for WPT - Device-to-device wireless
charging (D2DWC) for mobile devices with wireless power
TX/RX module
(IEC 63254:2022)
Gestion et interfaces pour WPT - Chargement sans fil de Management und Schnittstellen für WPT - Drahtloses
dispositif à dispositif (D2DWC) pour dispositifs mobiles avec Laden von Gerät zu Gerät (D2DWC) für mobile Geräte mit
module TX/RX d'énergie sans fil drahtlosem Power TX/RX-Modul
(IEC 63254:2022) (IEC 63254:2022)
This European Standard was approved by CENELEC on 2022-11-02. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63254:2022 E
European foreword
The text of document 100/3799/FDIS, future edition 1 of IEC 63254, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 63254:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-08-02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-11-02
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 shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63254:2022 was approved by CENELEC as a European
Standard without any modification.

IEC 63254 ®
Edition 1.0 2022-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Management and interfaces for WPT – Device-to-device wireless charging

(D2DWC) for mobile devices with wireless power TX/RX module

Gestion et interfaces pour WPT – Chargement sans fil de dispositif à dispositif

(D2DWC) pour dispositifs mobiles avec module TX/RX d'énergie sans fil

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.240.99; 33.160.01 ISBN 978-2-8322-5703-6

– 2 – IEC 63254:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Operation scenarios . 8
4.1 Architecture . 8
4.2 Communication procedure for D2DWC . 9
4.2.1 General . 9
4.2.2 Total operation scenario of D2DWC . 9
4.2.3 TX operation scenario of D2DWC . 10
4.2.4 RX operation scenario of D2DWC . 11
5 Specifications and control protocol of D2DWC unit . 12
5.1 General control of a D2DWC unit of the TX-RX combined type . 12
5.1.1 General . 12
5.1.2 Purposes of WPT control of the D2DWC unit . 14
5.1.3 Operation control of the D2DWC unit . 14
5.2 Design guide for D2DWC TX-RX combined power transmitter . 17
5.3 Control protocol of D2DWC unit . 18
5.3.1 General . 18
5.3.2 WPT command . 19
5.3.3 D2DWC control . 20
5.3.4 Reply of D2DWC . 22
5.3.5 D2DWC parameter . 22
Annex A (informative) Antenna design guide for D2DWC TX-RX combined power
transmitter . 24
A.1 5-W-class WPT RX antenna . 24
A.1.1 General . 24
A.1.2 Antenna design guide . 24
A.1.3 Detailed specifications of circuit . 25
A.2 15-W-class WPT RX antenna design guide . 26
A.2.1 General . 26
A.2.2 Detailed specifications of circuit . 27
Annex B (informative) Regulation certification . 29
Bibliography . 30

Figure 1 – Overall architecture of the proposed EMT/WPT module. 8
Figure 2 – Operation scenario of D2DWC . 9
Figure 3 – TX operation scenario of D2DWC using battery power only . 10
Figure 4 – TX operation scenario of D2DWC using constant power supply . 11
Figure 5 – RX operation scenario of D2DWC . 12
Figure 6 – Wireless charging control architecture of the proposed standard . 13
Figure 7 – System operation efficiency . 14
Figure 8 – Operation diagram for D2DWC WPT . 14

IEC 63254:2022 © IEC 2022 – 3 –
Figure 9 – D2DWC TX operation voltage diagram . 15
Figure 10 – D2DWC TX operation voltage diagram . 16
Figure 11 – D2DWC RX operable voltage/current diagram . 17
Figure 12 – Major function blocks of D2DWC . 18
Figure 13 – D2DWC unit wireless power transfer and control protocol of the MCU . 19
Figure A.1 – D2DWC TX/RX antenna of the 5-W-class WPT RX standard . 24
Figure A.2 – D2DWC TX/RX circuit diagram of the 5-W-class WPT RX specifications . 25
Figure A.3 – D2DWC TX/RX antenna of the 15-W-class WPT RX specifications . 26
Figure A.4 – D2DWC TX/RX circuit diagram of the 15-W-class WPT RX specifications . 27

Table 1 – Specifications for the TX operation of D2DWC unit . 13
Table 2 – WPT CMD fields . 19
Table 3 – WPT subcommands. 19
Table 4 – D2DWC Control Command fields . 20
Table 5 – Determination of the D2DWC wireless power transfer operation . 20
Table 6 – Determination of battery charging amount . 20
Table 7 – D2DWC unit temperature limit . 21
Table 8 – D2DWC unit voltage limit . 21
Table 9 – D2DWC unit current limit . 21
Table 10 – Operation setting when wireless charging stops . 21
Table 11 – Operation setting when an error occurs . 22
Table 12 – Responses of D2DWC Control CMDs . 22
Table 13 – D2DWC parameter command fields . 22
Table 14 – Output voltage field of D2DWC . 22
Table 15 – D2DWC output current field . 23
Table 16 – Current temperature of D2DWC unit . 23
Table 17 – Output current of the battery terminal . 23
Table 18 – Output current of battery terminal . 23
Table 19 – Risk state field of the D2DWC unit . 23
Table 20 – Desired minimum voltage of the D2DWC unit . 23
Table A.1 – D2DWC TX/RX antenna parameters of the 5-W-class WPT RX
specifications . 25
Table A.2 – Electric characteristics of the D2DWC TX/RX circuit of the 5-W-class WPT

RX specifications . 26
Table A.3 – D2DWC TX/RX antenna parameters of the 15-W-class WPT RX
specifications . 27
Table A.4 – Electric characteristics of the D2DWC TX/RX circuit of 15-W-class WPT
RX specifications . 28

– 4 – IEC 63254:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MANAGEMENT AND INTERFACES FOR WPT –
DEVICE-TO-DEVICE WIRELESS CHARGING (D2DWC) FOR
MOBILE DEVICES WITH WIRELESS POWER TX/RX MODULE

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
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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.
IEC 63254 has been prepared by technical area 15: Wireless power transfer, of IEC technical
committee 100: Audio, video and multimedia systems and equipment. It is an International
Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
100/3799/FDIS 100/3820/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

IEC 63254:2022 © IEC 2022 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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.
– 6 – IEC 63254:2022 © IEC 2022
MANAGEMENT AND INTERFACES FOR WPT –
DEVICE-TO-DEVICE WIRELESS CHARGING (D2DWC) FOR
MOBILE DEVICES WITH WIRELESS POWER TX/RX MODULE

1 Scope
This document defines the specification and the control protocol of the D2DWC module for the
use of wireless power TX and RX functions by a single device. The related antenna physical
design examples for sharing information are presented in Annex A.
This document proposes the D2DWC module circuit requirement, which consists of the D2DWC
main AP, D2DWC IC, the EMT/WPT antenna unit and the PMIC unit. In Clause 5, the register
information and message protocols for WPT control are defined in order to implement the WPT
TX function.
In this document, the interface and protocol in the wireless power process of the mobile device
can be used in accordance with the corresponding wireless power transfer standard. Any
wireless power transfer standard working within the 100 kHz to 350 kHz frequency range can
be included in the scope of this document.
This document can be used for mobile wireless power transfer in mobile phones and other
mobile devices, IoT devices, micro-sensor industries and related application fields.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
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 Terms and definitions
3.1.1
D2DWC
device-to-device wireless charging
wireless charging technology that uses a magnetic field-transmission function between mobile
devices, which can simultaneously perform wireless power TX and RX functions
3.1.2
D2DWC unit
IC that enables wireless power transmission/reception, and includes a magnetic
field-transmission function, mux, which allows the selection of WPT TX, and a transmission
inverter
IEC 63254:2022 © IEC 2022 – 7 –
3.1.3
WPT
wireless power transfer
technology that wirelessly sends energy to a load with no transmission line by converting
electric energy to electromagnetic waves
Note 1 to entry: To convert electric energy to electromagnetic waves, the electric energy is converted to RF signals
of a specific frequency and the energy is transmitted through the electromagnetic waves generated from them.
3.1.4
EMT
elective magnetic transmission
technology for transmitting elective magnetic waves and is currently used to create and send
magnetic waves for magnetic billing service of mobile phones
3.1.5
PMIC
power-management IC
device for managing battery charging, which includes a boost function
3.1.6
SPI
serial peripheral interface
synchronized serial data connection standard for operation in full-duplex communication mode
3.1.7
UART
universal asynchronous receiver/transmitter
device for receiving and sending data after converting parallel data to serial data
3.1.8
I C Bus
inter-integrated circuit bus
protocol for transmitting clocks, data, and commands
3.1.9
WPC Class 0 specification
specification used to load the battery of devices such as mobile phones, tablets, and small
accessories
Note 1 to entry: It has a maximum transmission power of 15 W.
Note 2 to entry: Power class 0 is defined by the WPC (World Power Consortium).
3.2 Abbreviated terms
WPT wireless power transfer
TX transmitter
RX receiver
RFU reserved for future use
MCU micro controller unit
– 8 – IEC 63254:2022 © IEC 2022
4 Operation scenarios
4.1 Architecture
This document proposes the physical definition and control information of modules for wireless
power transfer (WPT) between mobile devices that are operated by batteries instead of a
constant power supply and simultaneously support wireless power TX and RX. The total
architecture for the D2DWC technical standard proposed herein is shown in Figure 1.
To implement the features of the D2DWC, the following components are required:
a) D2DWC unit for performing magnetic field transmission function and wireless charging
TX/RX among mobile devices,
b) PMIC unit for battery charging,
c) EMT/WPT antenna unit for both EMT function and WPT TX/RX, and
d) microcontroller unit (MCU) for monitoring and controlling the D2DWC unit.
Among these components, the D2DWC unit consists of an EMT module, a WPT TX/RX module,
an EMP/WPT TX mux, and a power amp module. The EMT module can control and transmit
magnetic waveforms, and uses the same bandwidth as that of the frequencies specified in the
WPT for use in billing services, etc. The WPT TX/RX module has the functions to perform
wireless power transfer and reception. For WPT, it determines which magnetic field waveform
to send through the EMT module and mux. The EMT/WPT TX mux selects the waveform after
selecting the EMT and WPT TX signals. Finally, the power amp module sends the magnetic
field waveforms during EMT or WPT TX.
In order to examine each IC and module, for WPT, the D2DWC unit uses the mux to select and
send EMT and WPT TX, and a transmission inverter to generate and transmit magnetic fields,
which is shared between EMT and WPT. Furthermore, the WPT module can selectively perform
the TX/RX function. Outside of the D2DWC unit, there is one EMT/WPT antenna that shall be
used for three functions, for which the EMT and WPT functions shall be performed with the
same frequency. The antenna is shared for EMT and WPT functions, but the antenna can be
switched selectively depending on the EMT frequency. At a given frequency, the same antenna
may be used for both EMT and WPT TX. The optional EMT antenna is indicated to show the
selective change in the antenna length according to the impedance matching between the TX
and RX. Finally, the D2DWC unit is externally connected to the PMIC for battery charging, and
battery charging/discharging occurs during wireless power transfer and reception. Information
related to regulation and certification is presented in Annex B.

Figure 1 – Overall architecture of the proposed EMT/WPT module

IEC 63254:2022 © IEC 2022 – 9 –
4.2 Communication procedure for D2DWC
4.2.1 General
In this document, WPT can be controlled in accordance with t
...