SIST EN 63028:2018

SLOVENSKI STANDARD
SIST EN 63028:2018
01-april-2018
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Wireless Power Transfer - AirFuel Resonant Baseline System Specification (BSS) (IEC
63028:2017)
Drahtlose Energieübertragung - Magnetische Resonanz Interoperabilität - A4WP
Grundlegende System Spezifikation (BSS) (IEC 63028:2017)
Transfert d'énergie sans fil - Interopérabilité relative à la résonance magnétique -
Spécification du système de référence (BSS) A4WP (IEC 63028:2017)
Ta slovenski standard je istoveten z: EN 63028:2017
ICS:
29.240.99 'UXJDRSUHPDY]YH]L] Other equipment related to
RPUHåML]DSUHQRVLQ power transmission and
GLVWULEXFLMRHOHNWULþQHHQHUJLMH distribution networks
33.160.99 Druga avdio, video in Other audio, video and
avdiovizuelna oprema audiovisual equipment
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 63028:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 63028:2018

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SIST EN 63028:2018


EUROPEAN STANDARD EN 63028

NORME EUROPÉENNE

EUROPÄISCHE NORM
September 2017
ICS 29.240.99; 33.160.99; 35.200

English Version
Wireless Power Transfer - AirFuel Resonant Baseline System
Specification (BSS)
(IEC 63028:2017)
Transfert d'énergie sans fil - Interopérabilité relative à la Drahtlose Energieübertragung - Magnetische Resonanz
résonance magnétique - Spécification du système de Interoperabilität - A4WP Grundlegende System
référence (BSS) A4WP Spezifikation (BSS)
(IEC 63028:2017) (IEC 63028:2017)
This European Standard was approved by CENELEC on 2017-07-24. 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 63028:2017 E

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SIST EN 63028:2018
EN 63028:2017
European foreword
The text of document 100/2901/FDIS, future edition 1 of IEC 63028, prepared by Technical
Area 15 "Wireless power transfer" 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 63028:2017.

The following dates are fixed:
• latest date by which the document has to be (dop) 2018-04-24
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2020-07-24
• 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 shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 63028:2017 was approved by CENELEC as a European
Standard without any modification.
2

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SIST EN 63028:2018
EN 63028:2017

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
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
Airfuel Wireless -  Available -
Power Transfer at:http://www.airfuel.org/technologies/speci
System Baseline fication-download
System
Specification (BSS)

v1.3
Airfuel Wireless Available
Power Transfer at:http://www.airfuel.org/technologies/speci
System Baseline fication-download
System
Specification (BSS)

v1.2.1
Bluetooth core Available at:
specification v4.0 https://www.bluetooth.org/docman/handler
s/downloaddoc.ashx?doc_id=229737
CSA4 Available at:
https://www.bluetooth.org/docman/handler
s/downloaddoc.ashx?doc_id=269452

3

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SIST EN 63028:2018

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SIST EN 63028:2018




IEC 63028

®


Edition 1.0 2017-06




INTERNATIONAL



STANDARD








colour

inside










Wireless power transfer – Airfuel alliance resonant baseline system specification

(BSS)



























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 29.240.99; 33.160.99; 35.200 ISBN 978-2-8322-4429-6



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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SIST EN 63028:2018
– 2 – IEC 63028:2017  IEC:2017
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, symbols and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Symbols and abbreviated terms . 13
3.2.1 Symbols . 13
3.2.2 Abbreviated terms . 17
4 System description . 17
5 Conformance and backwards compatibility . 18
6 Device types . 19
6.1 PTU classification . 19
6.2 PRU category . 20
7 Power transfer specifications . 20
7.1 System equivalent circuit and reference parameters . 20
7.2 General system requirements . 21
7.2.1 Operating frequency . 21
7.2.2 Z relationship to R . 21
TX_IN RECT
7.2.3 Power stability . 21
7.2.4 PTU co-location protection. 21
7.2.5 PRU self-protection (informative) . 21
7.3 Resonator requirements . 21
7.3.1 Resonator coupling efficiency (RCE) . 21
7.3.2 PTU resonator requirements . 22
7.3.3 PRU resonator requirements . 24
7.4 Load parameters . 25
7.4.1 Load parameters introduction . 25
7.4.2 Minimum load resistance . 26
7.4.3 Maximum allowable dynamic load . 26
7.4.4 Maximum load capacitance . 26
8 Power control specifications . 26
8.1 Control objectives . 26
8.2 PTU specifications . 26
8.2.1 PTU state . 26
8.2.2 General state requirements . 27
8.2.3 PTU power save state. 28
8.2.4 PTU Low Power state . 30
8.2.5 PTU Power Transfer state . 31
8.2.6 PTU Configuration state . 33
8.2.7 PTU Local Fault state . 34
8.2.8 PTU latching fault state . 34
8.2.9 PTU state transitions . 35
8.2.10 PTU Test Mode. 38
8.3 PRU specifications . 38
8.3.1 PRU general requirements . 38

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SIST EN 63028:2018
IEC 63028:2017  IEC:2017 – 3 –
8.3.2 PRU state model . 41
8.3.3 Null state . 42
8.3.4 PRU boot . 42
8.3.5 PRU On state . 42
8.3.6 PRU System Error state . 43
8.3.7 PRU state transitions . 44
9 Signaling specifications . 45
9.1 Architecture and state diagrams . 45
9.1.1 Architecture . 45
9.1.2 Overall charge process . 46
9.2 Charge procedure and requirements . 48
9.2.1 Removing PRU from WPT network . 48
9.2.2 Power Sharing mode . 48
9.3 Bluetooth low energy requirements . 49
9.3.1 Bluetooth low energy requirements introduction . 49
9.3.2 Bluetooth low energy objectives . 49
9.3.3 PTU hardware requirement . 49
9.3.4 PRU hardware requirement . 49
9.3.5 Basic network structure . 49
9.3.6 RF requirements . 49
9.3.7 Timing and sequencing requirements . 50
9.3.8 Profile structure . 53
9.4 BLE profile definition . 53
9.4.1 GATT sub-procedure . 53
9.4.2 Configuration . 53
9.4.3 PRU requirements . 54
9.4.4 PTU requirements . 55
9.4.5 Connection establishment . 55
9.4.6 Security considerations . 57
9.4.7 Charge completion . 57
9.5 WPT service characteristics . 58
9.5.1 WPT service characteristics introduction. 58
9.5.2 PRU advertising payload . 58
9.5.3 WPT service . 60
9.5.4 PRU control . 62
9.5.5 PTU static parameter . 64
9.5.6 PRU static parameter characteristic . 69
9.5.7 PRU dynamic parameter characteristic . 72
9.5.8 PRU alert characteristic . 76
9.6 Cross connection algorithm . 78
9.6.1 Cross connection algorithm introduction . 78
9.6.2 Definitions . 78
9.6.3 Acceptance of advertisement . 78
9.6.4 Impedance shift sensing . 78
9.6.5 Reboot bit handling . 79
9.6.6 Time set handling . 79
9.7 Mode transition . 80
9.7.1 Mode transition introduction . 80
9.7.2 Mode transition procedure . 80

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SIST EN 63028:2018
– 4 – IEC 63028:2017  IEC:2017
9.7.3 BLE reconnection procedure . 81
10 PTU resonators . 83
10.1 PTU resonators introduction . 83
10.2 Class n design template . 83
10.2.1 Class n design template introduction. 83
10.2.2 Table of specifications . 83
10.2.3 PTU resonator structure . 83
10.3 Approved PTU resonators . 83
Annex A (informative) Reference PRU for PTU acceptance testing . 84
A.1 Category 1 . 84
A.2 Category 2 . 84
A.3 Category 3 . 84
A.3.1 PRU design 3-1 . 84
A.3.2 Geometry. 84
A.4 Category 4 . 87
A.5 Category 5 . 87
Annex B (informative) Lost power . 88
B.1 Overview. 88
B.2 General . 88
B.3 Cross connection issues . 88
B.4 Handoff issues . 88
B.5 Power noise issues . 89
B.6 PTU lost power calculation . 89
B.6.1 Lost power detection threshold . 89
B.6.2 Lost power detection speed . 89
B.6.3 PTU lost power calculation . 89
B.6.4 PTU power transmission detection accuracy . 89
B.6.5 PRU lost power reports . 89
B.6.6 Accuracy of reported power . 90
B.6.7 Other PRU lost power reports . 90
Annex C (normative) User experience requirements . 91
C.1 General . 91
C.2 User indication . 91
C.2.1 PRU user indication . 91
C.2.2 PTU user indication . 91
Annex D (informative) RCE calculations . 92
D.1 RCE calculation (using S-parameters) . 92
D.2 RCE calculation (using Z-parameters) . 93
D.2.1 Series tuned case . 94
D.2.2 Other RCE calculations. 94
D.3 Conversion between S-parameters and Z-parameters . 94

Figure 1 – Wireless power transfer system . 18
Figure 2 – PTU-PRU resonator P . 19
TX_IN
Figure 3 – PTU-PRU resonator P . 20
RX_OUT
Figure 4 – Equivalent circuit and system parameters . 20
Figure 5 – PTU resonator-load considerations . 24

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SIST EN 63028:2018
IEC 63028:2017  IEC:2017 – 5 –
Figure 6 – PTU state model . 27
Figure 7 – Beacon sequences . 29
Figure 8 – Load variation detection . 29
Figure 9 – Discovery . 30
Figure 10 – PTU I transition responses. 31
TX
Figure 11 – PRU state model . 41
Figure 12 – V operating regions . 42
RECT
Figure 13 – Basic architecture of WPT system . 45
Figure 14 – Basic state procedure (informative) . 47
Figure 15 – Registration period timeline example (informative) . 52
Figure 16 – PTU/PRU services/characteristics communication . 54
Figure 17 – PRU mode transition – Device Address field set to a non-zero value . 81
Figure 18 – PRU mode transition – Device Address field set to all zeros . 82
Figure A.1 – PRU design 3 block diagram . 84
Figure A.2 – Front view . 85
Figure A.3 – Back view . 85
Figure A.4 – Side view . 86
Figure A.5 – Front view, coil only . 86
Figure A.6 – Side view, coil only . 86

Table 1 – PTU classification. 19
Table 2 – PRU category . 20
Table 3 – Minimum RCE (percent and dB) between PRU and PTU. 22
Table 4 – Maximum load capacitance . 26
Table 5 – Time requirement to enter PTU Power Transfer state . 28
Table 6 – Sub-state of PTU Power Transfer . 32
Table 7 – PTU latching faults . 37
Table 8 – Example of accuracy of reported current . 41
Table 9 – PRU system errors . 45
Table 10 – RF budget (informative) . 50
Table 11 – Timing constraints . 52
Table 12 – BLE profile characteristics . 53
Table 13 – GATT sub-procedure . 53
Table 14 – PRU advertising payload . 58
Table 15 – Impedance shift bit . 60
Table 16 – WPT service UUID . 60
Table 17 – WPT service . 61
Table 18 – GAP service . 62
Table 19 – GATT service . 62
Table 20 – PRU Control Characteristic . 63
Table 21 – Detail: bit field for enables . 63
Table 22 – Detail: bit field for permission . 64
Table 23 – Detail: bit field for time set . 64

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SIST EN 63028:2018
– 6 – IEC 63028:2017  IEC:2017
Table 24 – PTU reporting static values to PRU . 65
Table 25 – Detail: bit field for optional fields validity . 65
Table 26 – PTU power . 66
Table 27 – Max source impedance . 67
Table 28 – Max load resistance . 68
Table 29 – AirFuel protocol revision field . 69
Table 30 – PTU number of devices . 69
Table 31 – PRU reporting static values to the PTU .
...