Detail of YD/T 1591-2009

Introduction of YD/T 1591-2009

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 1591-2006 Technical Requirements and Test Method of Charger and Interface for Mobile Telecommunication Terminal Equipment. The following main changes have been made with respect to YD/T 1591-2006: ——the original Chinese expression of the mobile telecommunication terminal equipment is modified, “charger” is changed to “power adapter”, and “interface” is changed to “charging/data port”; ——type of charging/data port of mobile telecommunication terminal equipment is determined; ——dimension and requirements of charging/data port of mobile telecommunication terminal equipment are added; ——requirements and test method for the mobile telecommunication terminal equipment with OTG function are added; ——requirements and test method for power adapter housing and cable materials are added; ——requirements and test method for electrical properties of charging/data port of mobile telecommunication terminal equipment are modified; ——output current of the power adapter is modified; ——test methods for input voltage adaptability, output voltage and output current are modified; ——requirements and test method for output ripple, short-circuit current, no-load energy consumption, reverse current, average power, contact current, etc. are modified; ——the characteristic graph of the output voltage and the output current is modified to the adaptability scheme of the output voltage and output current; ——identification conforming to this standard is defined; ——requirements and test method for low-level contact resistance and contact capacitance are deleted. Annex A of this standard is normative. 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 communication terminals to share the same specification of power adapter by specifying a unified port mode and technical requirements. This standard defines the charging connection in a three-stage mode, i.e., AC-DC power adapter, cable and 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 testing method for charging/data ports, AC-DC power adapters and cables of mobile communication terminal equipment (hereinafter referred to as "terminals"), including the physical characteristics, electrical characteristics, safety characteristics, electromagnetic compatibility, environmental adaptability and identification involved. This standard is applicable to terminals, AC-DC power adapters and their connecting cables using wired power supply, but not applicable to mobile terminals requiring special power supply and application, such as special mobile devices 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. 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 corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies. GB 2099.1 Plugs and socket-outlets for household and similar purposes - Part 1: General requirements GB 4943 Safety of information technology equipment GB 16915.1 Switches for household and similar fixed-electrical installations - Part 1:General requirements 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 GB/T 5169.16 Fire hazard testing for electric and electronic products - Part 16: Test flames - 50 W horizontal and vertical flame test methods GB/T 22451-2008 Common requirements of electromagnetic compatibility for radio communication equipment GB/T 22727.1 Limits and methods of measurement of certain hazardous substances in telecommunication product - Part 1: Telecommunication terminal YD 1268-2003 The safety specification and test method for lithium batteries and charger USB IF BC 1.1 Battery charging specification, Revision 1.1 USB 2.0 Universal serial bus, Revision 2.0 ASTM E 1252-98 Standard practice for general techniques for obtaining infrared spectra for qualitative analysis ZEK 01.2-08 Testing and validation of polycyclic aromatic hydrocarbons (PAHs) in the course of GS-Mark certification 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purpose of this standard, the following terms and definitions apply. 3.1.1 AC-DC power adapter a device that converts an input AC power source into an output DC power source, hereinafter referred to as a power adapter 3.1.2 cable a cable connecting a power adapter and a terminal to realize charging (power supply) cables with USB plugs at both ends can also be used for data transmission 3.1.3 direct plug-in power adapter a device that AC power plug of the power adapter and its housing form a whole, and the weight is carried by a wall socket 3.1.4 power adapter for building-in AC-DC power adapter that is preset in the prepared recess 3.1.5 class II equipment the equipment whose anti-shock protection depends on both basic insulation and additional safety protection measures. Such equipment does not rely on protective grounding or protection measures under installation conditions 3.1.6 class V-1 material such material that may be burnt or scorched as per the test method for class V-1 material specified in GB/T 5169.16, but the average duration is not more than 30s, and the scorching particles or burning drips arising from the combustion will not cause ignition of absorbent cotton 3.1.7 rated output voltage the output voltage of the power adapter designated by the manufacturer (as required by this standard, the output voltage shall be designated as 5V) 3.1.8 rated output current the output current of the power adapter designated by the manufacturer (as required by this standard, the output current shall be designated between 500 mA ~ 1500 mA). 3.1.9 startup voltage the voltage at the point where the overvoltage protection device starts after an excessive voltage is input into the power supply port of the terminal 3.1.10 OTG the abbreviation of On-The-Go, which means that the master and slave identities of the equipment can be converted in different application scenarios 3.1.11 reference output current an output current when the output end of the power adapter is connected with a variable pure resistance load (with power of not less than 7.5W), and the load value is adjusted to keep the voltage of 4.75 V on both load ends 3.1.12 standard downstream port downstream port of device (such as desktop computer, portable computer, USB hub, etc.) conforming to the definition of host or hub given in USB 2.0 Physically, the standard downstream port enables to realize the grounding between the D+ and D- pins through a pull-down resistor of 15kΩ (this is a typical value, with an allowable range of 14.25kΩ ~ 24.8kΩ) 3.1.13 charging downstream port downstream port of device that conforms to the definition of host or hub given in USB 2.0, has function of charging (power supply) and can output more than 500mA current to VBUS within any time. 3.1.14 safety threshold voltage the 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 For the purposes of this document, the following abbreviations apply. AC Alternating Current AWG American Wire Gauge DC Direct Current GND Ground (negative pole of power supply) STC Stranded Tin Copper USB Universal Serial Bus USB IF USB Implementers Forum VBUS Voltage Bus (positive pole of power supply) 4 Technical requirements 4.1 Overall connection For the purpose of this standard, a three-stage mode of power supply connection is adopted, i.e., power adapter, cable and terminal (power device). The power adapter converts AC power supply into DC power supply and then outputs it through USB A socket. This part only serves as an AC-DC conversion adapter. On one end of the cable, USB A socket of the power adapter is matched with USB A plug. On the other end of the cable, power socket of the terminal is matched with such plug that shall be Micro-USB B, Mini-USB B or cylindrical plug. The power socket of the terminal shall be Micro-USB B/AB, Mini-USB B/Mini10pin or cylindrical socket. However, if the terminal is a device with OTG function, the power socket shall be of Micro-USB Type AB. Besides charging, Micro-USB B/AB or Mini-USB B/Mini10pin is also the data transmission port of the terminal. The overall connection is shown in Figure 1. 4.2 AC-DC power adapter 4.2.1 Mechanical structure and pin definition of DC output port 4.2.1.1 Mechanical structure USB A connecting socket shall be adopted as the DC output port of the power adapter, with the mechanical structure shown in Figure 2. Figure 1 Overall connection Note: The minimum space allowed between the surface of the socket and the protective cover of the plug (formed by one-step injection molding) is 2.67 mm. Figure 2 Structure and dimension of DC output port socket of power adapter 4.2.1.2 Pin definition Pin definition is given in Table 1.   Table 1 Pin definition of DC output port socket of power adapter Pin number Pin definition 1 VBUS 2 D- 3 D+ 4 GND When USB A socket is used as the output port of the power adapter, the requirements are shown in Figure 3. VBUS is the positive pole of the output DC power supply, while GND is the negative pole (grounding) of the output DC power supply. D+ and D- shall be short connected inside the power adapter and isolated from other circuits, so that the terminal connected to them can identify that the connected device is a power adapter defined in this standard.

Contents of YD/T 1591-2009

Foreword i Introduction iii 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions 3.2 Abbreviations 4 Technical requirements 4.1 Overall connection 4.2 AC-DC power adapter 4.3 Cable 4.4 Terminal charging/data port 5 Test method 5.1 Test conditions 5.2 Test for AC-DC power adapter 5.3 Test for cable 5.4 Test for terminal charging/data port Annex A (Normative) Identification mark Bibliography