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.<\/p>\n
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.<\/p>\n
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.<\/p>\n
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.<\/p>\n
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.<\/p>\n
An EPS is expected to follow the applicable global standards and regulatory compliance requirements. Examples of those standards are given in Annex F.<\/p>\n
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|---|---|---|---|---|---|---|---|
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 1 Scope Figures Figure 1 \u2013 Scope of the identification and communication method <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 3.2 Abbreviated terms 4 Important characteristics of an external power supply 4.1 General 4.2 Positive identification of a unique EPS model <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.3 Static characteristics of the external power supply performance and design 4.3.1 General 4.3.2 Load current step performance of the EPS 4.3.3 Holdup time <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.3.4 Limited power source (LPS) compliance 4.3.5 Touch current 4.3.6 Minimum capabilities for peak current and overcurrent protection Figure 2 \u2013 Measurement of holdup time <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.3.7 Surface temperature of the enclosure of the EPS 4.3.8 Overvoltage protection in the EPS <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Annexes Annex A (informative) Open issues related to arbitrary combinations of EPS and portable computing device A.1 EMC, safety and performance A.2 Authentication, attestation, and data integrity protection A.3 Conducted noise from the EPS <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Annex B (informative) Considerations regarding EPS cable <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex C (informative) Recommended capabilities for EPS and legacy support <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex D (informative) Example usage scenarios of enhanced reporting from the EPS D.1 General D.2 Unique identification of the EPS D.3 Identification of voltage regulation, load current step and slew rate D.4 Load current step magnitude and slew rate capability <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | D.5 Holdup time D.6 Low touch current reporting D.7 Peak current capability D.8 Surface temperature of the EPS <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex E (informative) Common charging interoperability use cases E.1 General E.2 Examples of device use cases E.2.1 Smartphone E.2.2 Higher power portable computing devices (tablets, notebook computers, etc.) E.3 Examples of consumer use cases <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Annex F (informative) Conformance and market considerations F.1 General F.2 Summary of reported items and test references Tables Table F.1 \u2013 Summary of reported parameters from EPS to portable computing device <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | F.3 USB-IF Compliance Program F.4 General regulatory compliance for EPS <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | F.5 Other considerations for system testing F.6 After-market firmware updates to EPS Table F.2 \u2013 Examples of current regulations and standards in the US and EU applicable to external power supplies used with portable computing devices (non-exhaustive list) <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Identification and communication interoperability method for external power supplies used with portable computing devices<\/b><\/p>\n |