Detail of YD/T 1591-2021

Introduction of YD/T 1591-2021

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard replaces YD/T 1591-2009 Technical requirements and test method for power adapter and charging/data port of mobile telecommunication terminal equipment. The following main changes have been made with respect to YD/T 1591-2009: ——The applicable scope of the standard is adjusted, and the normal charging mode of the adapter is defined; ——The contents of computers or other data equipment are deleted; ——The technical requirements and test methods of cables and connectors are revised in the standard content; ——The types of ports are modified in the standard content, and the technical requirements and test methods of the corresponding port are also modified accordingly; ——The rated output voltage range, rated output current range and corresponding test methods of the adapter are modified; ——The technical requirements and test methods of output voltage ripple, reverse current and short-circuit current of adapter are modified; ——The energy efficiency requirements and test methods of adapters are modified; ——Some parameters of adapter environment adaptability requirements are modified; ——The part of the standard concerning "YD 1268.2-2003" is no longer adopted for reference; ——The technical requirements and test methods of the enclosure material of the adapter are modified; ——The electrical property requirements and test methods of terminals are modified; ——The technical requirements and test methods of terminals with OTG function are modified; ——The loading mode of load is modified; This standard was proposed by and is under the jurisdiction of China Communications Standards Association.   Introduction This standard is formulated with a view to, on the premise of ensuring the safety and usability of products, enabling different types of mobile telecommunication terminal equipment to share the adapter with the same specification by specifying a unified port mode and technical requirements. This standard defines the charging connection in a three-stage mode, i.e., power adapter, cable and mobile telecommunication terminal. Therefore, the application scope of this standard can be further expanded. For example, this standard can also be referenced for charging or power supply of portable or household small electronic equipment, so as to further reduce electronic waste, protect the environment, save resources and reduce the use cost. Technical requirements and test method for power adapter and charging / data port of mobile telecommunication terminal equipment 1 Scope This standard specifies the technical requirements and test methods of mobile telecommunication terminals (hereinafter referred to as "terminals"), power adapters (hereinafter referred to as "adapters"), cables and charging/data ports (hereinafter referred to as "ports") with only normal charging modes. This standard is applicable to terminals, adapters and their connecting cables using wired power supply. It is not applicable to mobile terminals requiring special power supply and applications, such as special mobile equipment only used in enterprises and industries. This standard can also be referenced for the power supply or charging of other portable or household small electronic equipment. Adapters referred to in this standard only include adapters that convert AC power input to DC power output. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding any corrigendum), or revisions, of any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For undated references, the latest edition applies. GB 1002-2008 Plugs and socket-outlets for household and similar purposes—Part 1: General requirements GB 4943.1-2011 Safety of information technology equipment GB 16915.1-2014 Switches for household and similar fixed-electrical installations—Part 1: General requirements GB/T 5169.16 Fire hazard testing for electric and electronic products—Part 16: Test flames—50W horizontal and vertical flame test methods GB/T 26572 Requirements of concentration limits for certain restricted substances in electrical and electronic products   GB/T 26125 Electrical and electronic products—Determination of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers) GB/T 29786 Determination of phthalates in electrical and electronic equipments—Gas chromatography-mass spectrometry GB/T 2423.43 Environmental testing for electric and electronic products—Part 2: Test methods—Mounting of specimens for vibration impact and similar dynamic tests YD/T 1312.13-2013 Requirements and measurement methods of electromagnetic compatibility for radio communication equipment—Part 13: Power adapter of mobile telecommunication terminal equipment AfPS GS 2014: 01 PAK Testing and validation of polycyclic aromatic hydrocarbons (PAHs) in the course of GS-Mark certification ASTM E 1252 Standard practice for general techniques for obtaining infrared spectra for qualitative analysis Battery Charger Specification Universal Serial Bus Type-C Cable and Connector Specification Universal Serial Bus Specification Universal Serial Bus 3.1 Specification Universal Serial Bus Micro-USB Cables and Connectors Specification UL1581 Standard for Safety Reference Standard for Electrical Wires, Cables, and Flexible Cords 3 Definitions and abbreviations For the purposes of this standard, the following definitions and abbreviations apply. 3.1 Definitions 3.1.1 cable cable connecting an adapter and a terminal to realize charging (power supply) and can also be used for data transmission, etc. 3.1.2 direct plug-in power adapter AC-DC power adapter which is composed of a power plug and enclosure 3.1.3 power adapter for building-in AC-DC power adapter which is preset in the prepared recess 3.1.4 normal charging mode charging mode based on BC specification, in which the rated output voltage of the adapter is 5V DC, the rated output current is less than or equal to 3A, and the output ports D+ and D- of the adapter are short-circuited 3.1.5 class II equipment equipment whose anti-shock protection depends on both basic insulation and additional safety protection measures. Such equipment does not rely on protective earthing or protection measures under installation conditions 3.1.6 class V-1 material material tested according to the thinnest effective thickness in use and passing the test of class V-1 material specified in GB/T 5169.16 3.1.7 class VW-1 material material passing the test of VW-1 materials specified in UL758 3.1.8 rated output voltage adapter output voltage claimed by the manufacturer 3.1.9 rated output current adapter output current claimed by the manufacturer 3.1.10 startup voltage voltage where the overvoltage protection device starts after an excessive voltage is input into the power supply port of the terminal 3.1.11 OTG abbreviation of On-The-Go, which means that the master and slave identities of the equipment can be converted in different application scenarios 3.1.12 safety threshold voltage voltage that the voltage limiting protection device of the terminal can withstand, i.e., it ensures that the terminal can be safely charged at a voltage of not greater than this value, and the terminal may be damaged and can’t be recovered beyond this value 3.2 Abbreviations AC: Alternating Current DC: Direct Current USB: Universal Serial Bus VBUS: Voltage Bus D+: Data+ D-: Data- GND: Ground BBP: Benzyl Butyl Phthalate DBP: Dibutyl Phthalate DEHP: Di-2-ethylhexyl Phthalate DIBP: Diisobutyl Phthalate 4 Technical requirements 4.1 Overall connection For the purpose of this standard, a three-stage mode of power supply connection are adopted, i.e., adapter, cable and terminal. The adapter provides DC power and outputs through a USB Type-A or Type-C compatible socket. One end (end A) of the cable is a plug matched with the adapter socket, compatible with USB Type-A or Type-C, and the other end (end B) is a plug matched with the power socket of the terminal, compatible with Micro-USB Type-B, Type-C or cylindrical type. The power socket of the terminal shall be compatible with Micro-USB Type-B, Type-C or cylindrical type. Besides charging, Micro-USB Type-B or Type-C can also serve as the data transmission port of the terminal. The connection is shown in Figure 1. This standard includes interfaces compatible with USB 2.0 Type-A (hereinafter referred to as USB-A), Type-C 2.0 (hereinafter referred to as Type-C) and Micro-USB 2.0 Type-B (hereinafter referred to as Micro-B). Figure 1 Schematic diagram of connection 4.2 Adapter 4.2.1 Port type requirements The adapter output ports shall be LTSB Type-A (see 4.2.3.1) or Type-C (see 4.2.3.2). 4.2.2 Mechanical structure of input port 4.2.2.1 Mechanical structure of input port of direct plug-in power adapter The input plug of AC direct plug-in power adapter shall meet relevant requirements of GB 1002. 4.2.2.2 Mechanical structure of input port of power adapter for building-in Screws for electrical contact pressure shall be engaged with metal nuts or metal inserts by at least two full threads. In addition, the screws and nuts connected to the power supply of the power grid shall meet the relevant requirements of GB 4943.1. The power adapter for building-in shall be provided with an on-off switch on the AC input end, and the on-off switch shall meet the relevant requirements of GB 16915.1.

Contents of YD/T 1591-2021

Foreword i Introduction iii 1 Scope 2 Normative references 3 Definitions and abbreviations 4 Technical requirements 4.1 Overall connection 4.2 Adapter 4.3 Cable 4.4 Terminal 5 Test methods 5.1 Test conditions 5.2 Adapter 5.3 Cable 5.4 Terminal Annex A (Normative) Identification mark Bibliography