SIST EN IEC 63002:2026

SLOVENSKI STANDARD
oSIST prEN IEC 63002:2024
01-december-2024
Specifikacije in komunikacijske metode medobratovalnosti zunanjih napajalnikov,
ki se uporabljajo pri računalniških in potrošniških elektronskih napravah
Interoperability specifications and communication method for external power supplies
used with computing and consumer electronics devices
Interoperabilitäts-Spezifikationen und Kommunikationsverfahren für externe
Stromversorgungen zur Anwendung für Computer- und Unterhaltungselektronikgeräte
Spécifications d'interopérabilité et méthode de communication pour les alimentations
externes utilisées avec les dispositifs informatiques et les dispositifs électroniques grand
public
Ta slovenski standard je istoveten z: prEN IEC 63002:2024
ICS:
31.020 Elektronske komponente na Electronic components in
splošno general
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
oSIST prEN IEC 63002:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 63002:2024
oSIST prEN IEC 63002:2024
100/4193/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63002 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-10-18 2025-01-10
SUPERSEDES DOCUMENTS:
100/4152/CD, 100/4174/CC
IEC TA 18 : MULTIMEDIA HOME SYSTEMS AND APPLICATIONS FOR END-USER NETWORKS
SECRETARIAT: SECRETARY:
Japan Mr Keisuke Koide
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 108
ASPECTS CONCERNED:
Electromagnetic Compatibility
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clau ses
to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC
clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Interoperability specifications and communication method for external power supplies used with
computing and consumer electronics devices

PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You
may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permis sion
in writing from IEC.
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1 CONTENTS
2 CONTENTS . 1
3 FOREWORD . 4
4 INTRODUCTION . 6
5 1 Scope . 7
6 2 Normative references . 8
7 3 Terms, definitions and abbreviated terms . 8
8 3.1 Terms and definitions . 8
9 3.2 Abbreviated terms . 10
10 4 EPS interoperability based on USB technologies . 10
11 4.1 Overview . 10
12 4.2 General . 10
13 4.3 USB standard charging summary and interoperability . 12 ®
14 4.4 USB Type-C Current . 13
15 4.5 USB Power Delivery (USB PD). 13
16 5 External power supply (EPS) specification . 14
17 5.1 General hardware specification . 14
18 5.1.1 General . 14
19 5.1.2 AC input characteristic . 14
20 5.1.3 Environmental specification . 14
21 5.1.4 EPS detection . 14
22 5.2 EPS protection . 15
23 5.3 Important characteristics of an external power supply . 15
24 5.3.1 General . 15
25 5.3.2 Positive identification of a unique power source model . 15
26 5.3.3 Static characteristics of the external power source performance and
27 design . 15
28 5.3.4 Example usage scenarios of enhanced reporting from the power source . 18
29 Annex A (informative) Open issues related to arbitrary combinations of power source
30 and device . 20
31 A.1 General . 20
32 A.2 EMC and safety . 20
33 A.3 Authentication, attestation, and data integrity protection . 20
34 A.4 Conducted noise from the EPS . 21
35 A.5 EPS power capacity impact on battery charging and non-battery powered
36 devices . 21
37 A.6 EPS with USB Type-C suitability for appliances or tools . 21
38 Annex B (informative) USB Type-C and USB Power Delivery robustness and
39 interoperability . 22
40 B.1 Overview . 22
41 B.2 USB Type-C Cable and Connector (IEC 62680-1-3) . 22
42 B.2.1 General . 22
43 B.2.2 Current capacity and cable identity . 22
44 B.2.3 Variations of cable for EPS . 22
45 B.2.4 Legacy support . 23
46 B.3 USB Power Delivery (IEC 62680-1-2) Protocol . 23
47 B.3.1 General . 23

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48 B.3.2 Robustness. 23
49 B.3.3 Error detection and recovery . 23
50 B.3.4 Additional safeguards for EPR operation. 24
51 B.3.5 Nonstandard protocol over USB Type-C . 24
52 B.4 High current operation . 25
53 B.4.1 Fast battery charging use case . 25
54 B.4.2 Computing performance use case . 25
55 Annex C (informative) USB charging profiles and device charging performance . 26
56 C.1 Overview . 26
57 C.2 USB Type-C and USB PD power capabilities model . 26
58 C.3 Battery charging performance and AVS . 28
59 C.4 Continuous power and “Flash” battery charging . 28
60 Annex D (informative) Common charging interoperability use cases . 30
61 D.1 General . 30
62 D.2 Examples of device use cases . 30
63 D.2.1 General . 30
64 D.2.2 Smartphone . 30
65 D.2.3 Higher power computing devices (tablets, notebook computers, etc.). 30
66 D.2.4 Other consumer electronics devices (smart watches, electric drills,
67 portable fans, etc.) . 31
68 D.3 Examples of consumer use cases . 31
69 D.3.1 General . 31
70 D.3.2 Power Bank . 31
71 Annex E (informative) Conformance and market considerations . 33
72 E.1 General . 33
73 E.2 Summary of reported items and test references . 33
74 E.3 USB-IF Compliance Program . 34
75 E.4 General regulatory compliance for a power source . 35
76 E.5 Other considerations for system testing . 35
77 E.6 After-market firmware updates to power source . 36
78 Bibliography . 36
80 Figure 1 – Scope of the identification, communication and control method . 7
81 Figure 2 – USB EPS charging application model . 11
82 Figure 3 – Measurement of holdup time . 16
83 Figure C.1 – Source power rules for Fixed Supply operation . 27
84 Figure E.1 – Example USB certified charger logo . 34
86 Table 1 – USB standard power modes and charging interoperability . 12
87 Table 2 – Required USB operating modes by PDP rating . 14
88 Table B.1- Supported proprietary communication over USB Type-C . 25
89 Table C.1- AVS required voltage supply ranges (and optional PPS reference) . 27
90 Table E.1 – Summary of reported parameters from USB PD power source and their test
91 references . 33
92 Table E.2 – Examples of current regulations and standards in the EU, US, and Asia
93 applicable to external power supplies used with devices (non-exhaustive list) . 35
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96 INTERNATIONAL ELECTROTECHNICAL COMMISSION
97 ____________
99 INTEROPERABILITY SPECIFICATIONS AND COMMUNICATION METHOD
100 FOR EXTERNAL POWER SUPPLIES USED WITH COMPUTING AND
101 CONSUMER ELECTRONICS DEVICES
103 FOREWORD
104 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
105 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
106 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
107 addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
108 Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
109 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
110 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
111 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
112 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
113 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
114 consensus of opinion on the relevant subjects since each technical committee has representation from all
115 interested IEC National Committees.
116 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
117 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
118 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
119 misinterpretation by any end user.
120 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
121 transparently to the maximum extent possible in their national and regional publications. Any divergence between
122 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
123 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
124 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
125 services carried out by independent certification bodies.
126 6) All users should ensure that they have the latest edition of this publication.
127 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
128 members of its technical committees and IEC National Committees for any personal injury, property damage or
129 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
130 arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
131 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
132 indispensable for the correct application of this publication.
133 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
134 rights. IEC shall not be held responsible for identifying any or all such patent rights.
135 This document has been prepared by technical area 18: Multimedia home systems and
136 applications for end-user networks, of IEC technical committee 100: Audio, video and
137 multimedia systems and equipment. It is an International Standard.
138 This third edition cancels and replaces the second edition published in 2021. This edition
139 constitutes a technical revision.
140 This edition includes the following significant technical changes with respect to the previous
141 edition:
142 a) Power range is increased to 240 W.
143 b) AVS mode is introduced.
144 c) Annex A updates issues of arbitrary combinations of AC adapter and device.
145 d) Annex B describes new safeguards for EPR mode.
146 e) Annexes C and D are updated.

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147 The text of this International Standard is based on the following documents:
CDV Report on voting
100/3463/CDV 100/3540B/RVC
149 Full information on the voting for its approval can be found in the report on voting indicated in
150 the above table.
151 The language used for the development of this International Standard is English.
152 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
153 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
154 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
155 described in greater detail at www.iec.ch/standardsdev/publications.
156 The committee has decided that the contents of this document will remain unchanged until the
157 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
158 specific document. At this date, the document will be
159 • reconfirmed,
160 • withdrawn,
161 • replaced by a revised edition, or
162 • 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.
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166 INTRODUCTION
167 The objective of this document is to enable common charging interoperability of external power
168 supplies (EPSs) used with the increasing variety of computing and consumer electronics
169 devices that implement IEC 62680-1-3 (USB Type-C® Cable and Connector Specification) and
170 IEC 62680-1-2 (USB Power Delivery). Broad market adoption of this document is expected to
171 make a significant contribution to the global goals of consumer convenience and re-usability of
172 power supplies by expanding common charging interoperability across different product
173 categories while preserving backwards compatibility with the installed base of billions of
174 IEC 62680 compliant devices worldwide.
175 This document specifies the minimum technical requirements for interoperability and includes
176 recommendations for EPS functionality when used with computing and electronics devices. The
177 approach taken by this document, focused on enabling common charging interoperability, can
178 allow manufacturers to innovate in aspects such as technical design, system performance, and
179 energy efficiency. Furthermore, common charging interoperability enables manufacturers to
180 design specific EPSs that match the requirements of target devices (functionality, cost, etc.)
181 and use cases, while at the same time enables consumers to use the EPS for charging other
182 IEC 62680 USB compliant devices, across various product types.
183 IEC 62680-1-3 adoption is well underway in global markets for a wide range of devices using
184 as much as 240 W, including notebook computers, tablets, smartphones, small form-factor
185 desktop computers, and other consumer electronics devices. This document enables the
186 reporting of the identity and power characteristics of power sources (EPSs and other Sources)
187 supported by IEC 62680-1-3 (USB Type-C) and specifies interoperability guidelines when using
188 IEC 62680-1-2 (USB Power Delivery). The method for identification of a specific power source
189 can enable equipment manufacturers to ensure compliant operation using these specifications
190 and promotes data communication that can be used by the device to predict and mitigate
191 interoperability concerns when an unfamiliar or incompatible EPS is connected to the device.
192 This document also provides important information regarding consumer safety, system reliability
193 as well as relevant global standards and regulatory compliance.
194 Other international and regional standards, and government policies for "universal" or "common
195 power adapters" that reference this document are expected to take into account open technical
196 and regulatory compliance issues that are associated with untested or arbitrary combinations
197 of EPSs and devices such as those identified in Annex A. As well, the limitations and issues
198 with approaches to define "common chargers" should be considered compared with the benefits
199 of this documents’ approach with focus on enabling common charging interoperabilit y. For
200 clarity, this document focuses on interoperability specifications in order to support global
201 industry in developing safe, innovative, environmentally conscious, and end-to-end
202 interoperable charging solutions that meet regulatory requirements and evolving market needs.
___________
USB4® and USB Type-C® are trademarks of the Universal Serial Bus Implementers Forum (USB-IF). This
information is given for the convenience of users of this document and does not constitute an endorsement by
IEC.
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205 INTEROPERABILITY SPECIFICATIONS AND COMMUNICATION METHOD
206 FOR EXTERNAL POWER SUPPLIES USED WITH COMPUTING AND
207 CONSUMER ELECTRONICS DEVICES
208 1 Scope
209 This document defines common charging interoperability guidelines for power sources (external
210 power supplies (EPSs) and other Sources) used with computing and consumer electronics
211 devices that implement IEC 62680-1-3 (USB Type-C Cable and Connector Specification).
212 This document defines normative requirements for an EPS to ensure interoperability; in
213 particular, it specifies the data communicated from a power source to a device (Figure 1) and
214 certain safety elements of the EPS, cable, and device. While the requirements focus of this
215 document is on the EPS and the behaviour at its USB Type-C connector interface, it is also
216 important to comprehend cable assembly and device capabilities and behaviours in order to
217 assure end-to-end charging interoperability. This document does not apply to all design aspects
218 of an EPS. This document does not specify regulatory compliance requirements for aspects
219 such as product safety, EMC, or energy efficiency.
221 Figure 1 – Scope of the identification, communication and control method
222 This document provides recommendations for the behaviour of a device when used with a power
223 source compliant with this document. It specifies the minimum hardware specification for an
224 EPS implementing IEC 62680-1-3. This document also specifies the data objects used by a
225 charging system utilizing IEC 62680-1-2 to understand the identity, design and performance
226 characteristics, and operating status of an external power supply. IEC 62680-1-2 focuses on
227 power delivery applications ranging to 240 W for a variety of computing and consumer
228 electronics devices including notebook computers, tablets, smartphones, small form-factor
229 desktops, monitor displays and other multimedia devices.
230 This document relies on established mechanical and electrical specifications, and
231 communication protocols specified by IEC 62680-1-2 and IEC 62680-1-3. These specifications
232 support methods for establishing the best performing interoperability between untested
233 combinations of EPS and devices with the aim of improving consumer satisfaction.
234 Information describing the USB charging interoperability model, overview of USB Type-C and
235 USB Power Delivery specifications, and factors for charging performance are also provided to
236 support implementation of this document.
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239 2 Normative references
240 The following documents are referred to in the text in such a way that some or all of their content
241 constitutes requirements of this document. For dated references, only the edition cited applies.
242 For undated references, the latest edition of the referenced document (including any
243 amendments) applies.
244 IEC 60950-1, Information technology equipment – Safety – Part 1: General requirements
245 IEC 60990, Methods of measurement of touch current and protective conductor current
246 IEC 62368-1, Audio/video, information and communication technology equipment – Part 1:
247 Safety requirements
248 IEC 62680-1-1, Universal Serial Bus interfaces for data and power – Part 1-1: Common
249 components – USB Battery Charging Specification, Revision 1.2
250 IEC 62680-1-2, Universal Serial Bus interfaces for data and power – Part 1-2: Common
251 components – USB Power Delivery specification
252 IEC 62680-1-3, Universal Serial Bus interfaces for data and power – Part 1-3: Common
253 components – USB Type-C Cable and Connector Specification
254 3 Terms, definitions and abbreviated terms
255 3.1 Terms and definitions
256 For the purposes of this document, the following terms and definitions apply.
257 ISO and IEC maintain terminological databases for use in standardization at the following
258 addresses:
259 • IEC Electropedia: available at http://www.electropedia.org/
260 • ISO Online browsing platform: available at http://www.iso.org/obp
261 3.1.1
262 vendor identification
263 VID
264 unique 16-bit unsigned value assigned by the USB-IF to a given vendor
265 3.1.2
266 Source
267 power supply
268 power source
269 device designed to comply with IEC 62680-1-2 that supplies power over V
BUS
270 EXAMPLE A USB connector on a PC, laptop computer, vehicle, AC outlet, docking station, battery pack, or EPS.
271 3.1.3
272 Sink
273 power sink
274 device designed to comply with IEC 62680-1-2 that receives and consumes power over V
BUS
275 EXAMPLE A computing device.
276 Note 1 to entry: Sometimes referred to as the device.
277 3.1.4
278 charging
279 charge
280 transfer of power over USB connector and cable
281 Note 1 to entry; “battery charging” is a specific use by a Sink that is enabled by “charging”

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283 3.1.5
284 external power supply
285 EPS
286 power source contained in a separate physical enclosure external to the device casing and
287 designed to convert mains power supply to lower DC voltage(s) for the purpose of powering the
288 device
289 EXAMPLE A charging block or a power adapter.
290 3.1.6
291 Programmable Power Supply
292 PPS
293 optional capability in IEC 62680-1-2 where a device (Sink) can adaptively adjust the SPR EPS
294 (Source) output voltage in small increments and set maximum current within its advertised range
295 Note 1 to entry; In IEC 62680-1-2, an EPS that is supports PPS is called a “Fast Charger.”
296 3.1.7
297 Fixed Supply
298 power source whose output voltage is regulated at certain voltages
299 Note 1 to entry: Standardized voltages in IEC 62680-1-2 are 5 V, 9 V, 15 V and 20 V for SPR and 28 V, 36 V, and
300 48 V for EPR.
301 3.1.8
302 USB PD power
303 PDP
304 nominal power capacity of the charger defined by IEC 62680-1-2 for use to indicate to
305 consumers
306 Note 1 to entry: The PDP rating is indicated both on the USB charger certification logo and within the USB PD
307 Source capabilities advertisement to the Sink. For any given PDP rating, the minimum capabilities in terms of
308 supported voltages and currents are deterministic, as defined in IEC 62680-1-2.
309 3.1.9
310 charging cable
311 cable used between the EPS and device to be charged
312 Note 1 to entry: The cable connection to the EPS is a USB Type-C plug in accordance with IEC 62680-1-3. The
313 cable connection to the device can be either a USB Type-C plug, a legacy USB plug (e.g. USB Micro-B in accordance
314 with IEC 62680-2-2), or a non-USB device-specific connection (either permanent or detachable). Charging cables
315 can be application-specific to enable interoperability between the USB Type-C-based EPS defined by this document
316 and both existing and future devices and including devices that are not able to accommodate USB Type-C receptacles,
317 e.g. smart watches.
318 3.1.10
319 captive cable
320 permanently attached cable
321 cable that has a USB Type-C plug on one end and is either hard-wired into a device on the
322 other end or has a device-specific plug on the other end
323 Note 1 to entry: When a device-specific plug is used on one end, the cable can be detachable in a physical sense
324 but is considered "functionally captive" to the device given it does not use a USB -defined connector on the device
325 end but otherwise functions as a USB device. This definition has remained the USB definition in IEC 62680-2-1 (USB
326 2.0).
327 3.1.11
328 standard power range
329 SPR
330 USB power source limited to 20 V and 100 W or less
331 3.1.12
332 extended power range
333 EPR
334 USB power source up to 48 V and 240 W

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335 3.1.13
336 Adjustable Voltage Supply
337 AVS
338 optional capability in IEC 62680-1-2 where a device (Sink) can adaptively vary the Source
339 output voltage in small increments within its advertised range
341 3.2 Abbreviated terms
342 AC    alternating current
343 AVS   Adjustable Voltage Supply
344 CC    configuration channel
345 CRC   cyclic redundancy check
346 DC    direct current
347 EMC   electromagnetic compatibility
348 EMI    electromagnetic interference
349 EPR   Extended Power Range
350 EPS   external power supply
351 IoC    contracted operating current
352 LPS    limited power source
353 OEM   original equipment manufacturer
354 OVP   overvoltage protection
355 PDO   power data object
356 PFC    power factor correction
357 PDP   USB PD Power
358 PID    product identification
359 PPS   Programmable Power Supply
360 SPR   Standard Power Range
361 VAC   volts alternating current
362 USB   universal serial bus
363 USB PD universal serial bus power delivery
364 USB-IF Universal Serial Bus Implementers Forum
365 VDM   Vendor Defined Message
366 VID    vendor identification
367 4 EPS interoperability based on USB technologies
368 4.1 Overview
369 This clause describes the USB common charging interoperability model and provides a
370 summary of the USB Type-C and USB Power Delivery technologies specified in IEC 62680‑1‑3
371 and IEC 62680-1-2, respectively.
372 4.2 General
373 Since its introduction, USB charging technology has consistently provided 5 V DC (up to 7,5 W)
374 power over the common USB Standard-A connector on the power source. This technology has
375 continuously evolved to support higher charging power, increased capabilities, and simplified
376 charging interoperability, while maintaining backwards and forwards interoperability, resulting
377 in a growing ecosystem of devices and use cases that are adopting USB charging technology.
378 With the USB Type-C technology, base charging capacity is increased up to 15 W over the USB
379 Type-C connector. When used with defined legacy cables and adapters, USB Type-C-based

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380 power sources, remain electrically and functionally interoperable with previous generations of
381 USB devices, while enabling new capabilities for USB Type-C supported devices.
382 USB Power Delivery (USB PD) software technology has enabled a rapid evolution of charging
383 models and an increasing scope of products using the USB Type-C connector. Both power
384 capability and support of new charging models have evolved with each generation of USB PD
385 protocols: First as the USB Type-C connector has evolved from fixed voltage to standardized
386 voltages and 100 W Standard Power Range (SPR) capabilities, then to 240 W Extended Power
387 Range (EPR), and then to the Adjustable Voltage Supply (AVS) protocol. Each generation is
388 deliberately distinct while maintaining strict reliability and interoperability. It is anticipated that
389 the trend for higher power capable EPS is to implement EPR with AVS protocol as these
390 capabilities simplify charging interoperability with different devices, improve user experience,
391 and reduce design complexity for more devices to support USB charging.
392 Figure 2 illustrates the USB EPS charging application model consisting of the EPS (Source)
393 with a USB Type-C receptacle, the device to be charged (Sink) and the charging cable
394 connecting the device to the EPS. This model also enables compatibility with devices that are
395 based on legacy USB connectors, have a permanently attached cable, or use a cable that is
396 device specific. Several usage examples demonstrating end-to-end charging interoperability
397 based on this comprehensive model are presented in Annex D.
399 Figure 2 – USB EPS charging application model
400 In Figure 2, the last two devices illustrated align with the USB definition of a captive cable
401 assembly – supporting these device usage configurations enables USB to support charging
402 interoperability across a wider variety of applications that implement a non-USB standard
403 receptacle or connector for any number of usage or design reasons but otherwise function as
404 USB devices. Examples of these applications include a device that has a non-USB receptacle

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405 (such as a wireless charger), or a USB power bank that incorporates a permanently attached
406 cable for user convenience.
407 This charging model for USB Type-C is fundamentally the same as the previous generation USB
408 charging model consisting of an EPS with a USB Standard-A receptacle which is the basis for
409 charging interoperability specified in IEC 62684 [1]. This USB Standard-A EPS model will
410 continue to be supported even with new devices which are based on USB Type-C receptacles
411 since USB-defined transition cables and adapters are readily available to enable charging
412 interoperability.
413 4.3 USB standard charging summary and interoperability
414 Table 1 summarizes the standard charging modes defined by USB specifications, including the
415 applicable USB connectors for each of the defined power modes.
416 While the USB Type-C connector is functionally compatible with all existing USB power options,
417 the older USB Standard-A and USB Micro-B cannot support advanced USB Type-C dedicated
418 power modes – these power modes are indicated in the lower portion of the table. As read down
419 the table rows, each subsequent power mode is required to support backward-compatibility with
420 all of the power modes above it – in this way, USB-defined interoperability between newer power
421 sources is readily assured with older power sinks.
422 Table 1 – USB standard power modes and charging interoperability
IEC specification Applicable
Power
receptacle Voltage Current Interoperability
mode
connectors
a
IEC 62680-2-1 [2] USB Standard- 5 V 0,5 A Forward compatibility
USB 2.0
A (Source) supported using USB
IEC 62680-2-2 [3]
b
Standard-A to USB Type-C
USB Micro-B
IEC 62680-2-3 [4]
cables or USB Micro-B to USB
(Sink)
Type-C adapters.
USB Type-C
(Source or
Backward compatibility
Sink)
supported using USB Type-C
to USB Micro-B cables.
IEC 62680-3-1 [5] USB 3.0, USB Standard- 5 V 0,9 A
USB 3.1, A (Source)
a b
USB 3.2 USB Micro-B
(Sink)
USB Type-C
(Source or
Sink)
IEC 62684 [1] USB BC USB Standard- 5 V Up to 1,5 A
1.2 A (Source)
c
USB Micro-B
(Sink)
USB Type-C
(Source or
Sink)
IEC 62680-1-3 USB USB Type-C 5 V 1,5 A Functionally compatible with
Type-C (Source or USB BC 1.2 compatible Sinks
3 A
Current at Sink) up to 1,5 A.
1,5 A or
Backward compatibility in BC
3,0 A
1.2 mode supported using
USB Type-C to USB Micro-B
cables.
IEC 62680-1-2 USB USB Type-C Configurable Configurable
USB4 ® uses USB PD as its
d
Power (Source or from 9 to
up to 5 A power mode.
Delivery Sink) 20 V
AVS protocol (allowing
(USB PD)
configuration of any voltage
SPR mode
from 9 V to maximum rated
voltage) is required for all EPS
USB Configurable
d rated 28 W and higher.
Power
up to 48 V
Delivery
(USB PD)
EPR mode
oSIST prEN IEC 63002:2024
IEC CDV 63002 © IEC 2024 - 13 - 100/4193/CDV

a
These specifications do not explicitly define charging support requirements. When USB data ports also
support charging, the current capabilities of these ports are typically based on what is defined for a USB port
operating in its high power configured state, i.e. 500 mA for USB 2.0.
b
While less common, USB Standard-B and USB Mini-B are also applicable for a Sink.
c
While less common, USB Micro-AB is also applicable for a Sink.
d
Power transfer over 60 W (3 A) or 20 V requires use of an electronically marked 240 W (5 A, 48 V) cable if
the EPS is a detachable cable design.
424 Annex B provides further detail on the robustness and interoperability characteristics of USB
425 Type-C and USB Power Delivery solutions. ®
426 4.4 USB Type-C Current
427 The USB Type-C Current power mode provides up to 15 W, based on a regulated 5 V power
428 source with up to 3 A operation. This power mode does not require USB PD capability, and
429 instead uses a simple analogue method over the USB Type-C Configuration Channel (CC)
430 interface for a Source to advertise its available current to a Sink. A USB Type-C Source can
431 advertise default USB Type-C Current (500 mA or 900 mA, based on the version of the USB
432 port and cable), USB Type-C Current at 1,5 A (7,5 W) or USB Type-C Current at 3 A (15 W).
433 4.5 USB Power Delivery (USB PD)
434 Power transfer at more than 15 W, 5 V, or 3 A shall comply with IEC 62680-1-2 (USB Power
435 Delivery). USB Power Delivery standardizes the discovery, configuration and functional
436 operation of more capable USB Type-C power sources and battery chargers. The USB PD
437 protocol, operating as a digital communication over the USB Type-C Configuration Channel (CC)
438 interface, enables a predictable, reliable user experience based on a common set of robust
439 mechanisms and communication exchanges between the USB Source and Sink. The
440 comprehensive set of power delivery methods supported by the USB PD protocol enables a
441 broad range of charging approaches and profiles that are specific to the design and operation
442 of the device being charged (the Sink) – this enables device designs to evolve and innovate,
443 even enjoying new capabilities with a different charger, while the capabilities of another USB
444 PD-based charger can remain a constant.
445 USB PD protocol is used to provide system control, error detection and handshaking. The four
446 required steps for enabling power delivery are:
447 1) Source offers its capabilities.
448 2) Sink requests from the offered capabilities.
449 3) Source accepts the request.
450 4) Source indicates that it is ready to provide power.
451 USB PD protocol can also be used for reporting the status (overcurrent protection,
452 overtemperature protection, overvoltage protection, etc.) of the Source.
453 The USB PD protocol recognizes two voltage regulation methods.
454 – Fixed Supply charging model: Provides a set of selectable fixed voltage and current
455 combinations. IEC 62680-1-2 requires voltages that include 5 V, 9 V, 15 V and 20 V in SPR
456 mode and 28 V, 36 V, and 48 V in EPR mode. The Source can offer as much as 5 A,
457 depending on the cable current rating.
458 – Adjustable charging models: Adjustable Voltage Supply (AVS) and Programmable Power
459 Supply (PPS) charging models enable fine control over voltage, benefitting in a decrease of
460 heating in the device for example to help facilitate faster battery charge. AVS and PPS give
461 the Sink precise control of voltage, or (in PPS only) a maximum regulated source current
462 limit, that may relieve the heat generation and thermal rise due to voltage regulation.
oSIST prEN IEC 63002:2024
100/4193/CDV - 14 - IEC CDV 63002 © IEC 2024

464 USB PD EPS are required to indicate a user-visible USB PD Power (PDP) rating. The PDP
465 rating is expressed in watts ranging from 15 W to 240 W and eases the user experience by
466 matching the chargers' capabilities (voltage and USB PD capability) with the device needs. As
467 shown in table 2, these capabilities are progressive with PDP rating—meaning that for any given
468 PDP rating, the capabilities associated with all lower PDP ratings are required in the charger in
469 order to assure safe downward compatibility with lower-power devices. See Annex C for more
470 information.
471 Table 2 – Required USB operating modes by PDP rating
PDP rating Shall incrementally have
Any PDP 5 V
More than 15 W USB PD
28 W or more Adjustable Voltage Supply (AVS)
More than 100 W EPR mode
472 As indicated in Table 2, interoperability between EPSs and devices is supported when different
473 USB PD charging modes are supported:
474 • All USB Type-C EPS with PDP rating of 15 W or below need only support 5 V. USB PD
475 support is optional and not required.
476 • EPS rated above 15 W PDP shall also employ USB PD and enable a 9 V fixed supply.
477 • At 28 W or more shall support certain determined fixed voltages and also AVS.
478 The USB Type-C and USB Power Delivery specifications continue to evolve as data
479 performance and power needs increase over time, supporting new p
...