1、 ETSI TS 102 874-2 V1.1.1 (2010-07)Technical Specification Access, Terminals, Transmission and Multiplexing (ATTM);External Common Power Supply for Customer PremisesNetwork and Access Equipment;Part 2: Integrated Broadband Cable and Television NetworksETSI ETSI TS 102 874-2 V1.1.1 (2010-07)2Referenc
2、e DTS/ATTM-003004 Keywords cable, IP, IPCable, power supply ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Impo
3、rtant notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is th
4、e Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Info
5、rmation on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No p
6、art may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2010. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are T
7、rade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. LTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partner
8、s. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 874-2 V1.1.1 (2010-07)3Contents Intellectual Property Rights 9g3Foreword . 9g3Introduction 9g31 Scope 11g32 References 11g32.1 Normative references . 11g32.2 Informative references 12g33 Abbreviatio
9、ns . 12g34 Electrical Specifications . 13g34.1 Input Requirement 13g34.1.1 Input Voltages And Frequency . 13g34.1.2 Input Current. 13g34.1.3 Inrush Current . 13g34.1.4 Power Efficiency 13g34.1.5 Input Current Protection . 13g34.2 Output Requirement . 13g34.2.1 Output Voltage, Current And Ripple 13g3
10、4.2.2 Short Circuit Protection And Over Current Protection . 14g34.2.3 Output Over Voltage Protection . 14g34.3 Performance Requirement 14g34.3.1 Efficiency 14g34.3.2 Turn On Delay Time . 14g34.3.3 Hold-up Time 14g34.3.4 Brown-out and recovery . 14g34.3.5 Dynamic Load 15g34.3.6 Max Open Circuit Volt
11、age 15g34.3.7 Overshoot at turn on / Turn off . 15g34.3.8 Output transient response / Transient load slew . 15g34.3.9 Rise time . 15g35 Operational and Storage Environmental Requirements . 15g35.1 Temperature And Humidity . 15g35.1.1 Operating Temperature and Humidity Range . 15g35.1.2 Storage Tempe
12、rature and Humidity Range . 16g35.2 Altitude . 16g36 Requirements to European Standards . 16g36.1 Power efficiency . 16g36.2 EMC Specification . 16g36.2.1 CISPR Requirements 16g36.2.2 AC Input Voltage Periodic Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“,
13、which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs
14、 not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Access, Terminals, Transmission and Multiplexing (ATTM). Introdu
15、ction The present document is part 2 of a multi-part deliverable covering External Common Power Supply (CPS) for Customer Premises Network and Access Equipment. It represents a set of cohesive interwoven technical information that has jointly evolved to define solution of most efficient equipment, a
16、s defined below: ES 202 874-1 i.1 defines functional requirements for four different categories of CPS. TS 102 874-2: “External Power Supply for Customer Premises Equipment“. TS 102 874-3 defines detailed implementation and operational aspects for CPS Type 1. TS 102 874-4 defines detailed implementa
17、tion and operational aspects for CPS Type 2.b. TS 102 874-5: defines detailed implementation and operational aspects for CPS Type 2.c. The intended applications of these CPS categories are specified in ES 202 874-1 i.1. The following table summarises the structure of the present document: Table 1 CP
18、S category Functional requirements Implementation aspects Type 1: 5 V, 2 A ES 202 874-1 i.1 TS 102 874-3 Type 2.a: 12 V, 1 A TS 102 874-2 Type 2.b: 12 V, 2 A TS 102 874-4 Type 2.c: 12 V, 5 A TS 102 874-5 The present document specifies requirements for a high performance External Power Supply Unit fo
19、r powering the Cable Customer Premises Equipment to a maximum voltage rating of 12 V. It specifies the input, output characteristics and performance requirements for a switching mode AC to DC power supply rated to a maximum 12 Vdc, and maximum 1 A. The performance of Integrated Broadband Cable and T
20、elevision Networks CPE such as Cable Modems, eMTAs, STBs has a dependency on the performance of the external power supply used to power the CPE. Failure of a power supply result in loss of customer service, increased operations support and consequently increased costs to the provider of Integrated B
21、roadband Cable and Television Network Services. ETSI ETSI TS 102 874-2 V1.1.1 (2010-07)10The present document specifies requirements for a low power DC output external power supply unit rated to a maximum of 12 Vdc and a maximum current of 1 Amp for use with a Cable CPE. The external power supply is
22、 specified to a performance level to ensure the overall performance of the system consisting the power supply and CPE is maintained at a high level. Test are specified to verify the compliance of the external power supply against the requirements given by the present document. The present document s
23、pecifies design requirements and tests to ensure compliance of the power supply as well as reference to relevant European Directives including power efficiency on-load and no-load requirements given by European Commission Regulation No 278/2009 1. ETSI ETSI TS 102 874-2 V1.1.1 (2010-07)111 Scope The
24、 present document describes the specification for a high performance External Power Supply Unit for powering the Cable Customer Premises Equipment to a maximum voltage rating of 12 Vdc. The specifications define the input, output characteristics and performance requirements for a switching mode AC t
25、o DC power supply rated to a maximum 12 Vdc, and maximum 1 A. The present document also specifies tests to verify the compliance of the external power supply. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For
26、specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Refere
27、nce. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. 1 Commission Regulation (EC) No 278/200
28、9 of 6 April 2009 implementing Directive 2005/32/EC of the European Parliament and of the Council with regard to ecodesign requirements for no-load condition electric power consumption and average active efficiency of external power supplies. 2 CENELEC EN 55022: “Information technology equipment - R
29、adio disturbance characteristics - Limits and methods of measurement“. 3 CISPR 22: “Information technology equipment - Radio disturbance characteristics - Limits and methods of measurements“. 4 CENELEC EN 61000-3-2: “Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic curren
30、t emissions (equipment input current 16 A per phase)“. 5 CENELEC EN 61000-4-2: “Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test“. 6 CENELEC EN 61000-4-4: “Electromagnetic compatibility (EMC) - Part 4-4: Testing and measuremen
31、t techniques - Electrical fast transient/burst immunity test“. 7 CENELEC EN 61000-4-5: “Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test“. 8 CENELEC EN 61000-4-11: “Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techni
32、ques - Voltage dips, short interruptions and voltage variations immunity tests“. 9 CENELEC EN 61000-4-12: “Electromagnetic compatibility (EMC) - Part 4-12: Testing and measurement techniques - Ring wave immunity test“. 10 Directive 2002/95/EC of the European Parliament and of the Council of 27 Janua
33、ry 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (Restriction of Hazardous Substances (RoHS) Directive). 11 Directive 2002/96/EC of the European Parliament and of the Council of 27 January 2003 on waste electrical and electronic equipment (
34、WEEE) and amendments. ETSI ETSI TS 102 874-2 V1.1.1 (2010-07)1212 CENELEC EN 60950-1: “Information technology equipment - Safety - Part 1: General requirements“. 13 CENELEC EN 50075: “Flat Non-Wirable Two-Pole Plugs, 2,5 A 250 V, with Cord, for the Connection of Class II-Equipment for Household and
35、Similar Purposes“. 14 Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (Low Voltage Directive (LVD). 15 Council Directive 93/68/EEC
36、of 22 July 1993 (CE Marking Directive). 16 Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC (EMC Directive). 17 BS 1363-1 (1995):
37、“13 A plugs, socket-outlets, adaptors and connection units. Specification for rewirable and non-rewirable 13 A fused plugs“. 2.2 Informative references The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particula
38、r subject area. i.1 ETSI ES 202 874-1 (V1.1.1): “Access, Terminals, Transmission and Multiplexing (ATTM); External Common Power Supply for Customer Premises Network and Access Equipment: functional requirements“. 3 Abbreviations For the purposes of the present document, the following abbreviations a
39、pply: AC Alternating Current AWG American Wire Gauge CPE Customer Premises Equipment DC Direct Current EC European Commission EEC European Economic Community EMC Electromagnetic CompatibilityeMTA embedded Media Terminal Adaptor ESD ElectroStatic DischargeIPR Intellectual Property Rights kV kilo Volt
40、age LVD Low Voltage Directive mA milli Ampere ms millisecondsMTBF Mean Time Between Failure PLT Power Line Telecommunications RH Relative Humidity STB Set Top Box ETSI ETSI TS 102 874-2 V1.1.1 (2010-07)134 Electrical Specifications 4.1 Input Requirement 4.1.1 Input Voltages And Frequency Table 2: In
41、put voltage and frequency Normal Voltages (Vac) Voltage Variation Range (Vac) Normal Frequency (Hz) Frequency Variation Range (Hz) 100 to 240 90 to 264 50 to 60 47 to 63 The power supply shall be designed to meet the requirements and limits given in table 2. 4.1.2 Input Current The AC input current
42、shall not exceed 0,5 A, when operated at 100 to 240 Vac with no load to full load. 4.1.3 Inrush Current The inrush current must be limited to 50 A when operated at 240 Vac. 4.1.4 Power Efficiency The power supply shall comply with the European Commission Regulation No 278/2009 1. The requirement of
43、annex I-b: “eco design requirements“, must be met: - No-load conditions shall not exceed 0,3 Watt. - Average active efficiency 0,063 x ln(Po) + 0,622 or better. ( 77,85 % if Po= 12 W) 4.1.5 Input Current Protection A fuse with a rating equal to the rating of the power supply i.e. up to maximum of 1,
44、0 A shall be installed on the input line side near the input connector to protect the power supply. 4.2 Output Requirement 4.2.1 Output Voltage, Current And Ripple Under any combinations of line and load variation and environmental conditions, the output shall remain within the tolerance defined in
45、table 3. Table 3: Output voltage, current and ripple Input normal voltage (Vac) Output Nominal Voltage (Vdc) Output Regulation Minimum Load (A) Maximum Load (A) Maximum ripple (mVp-p) Output power (W) 100 to 240 12 5 % 0,0 1,0 120 12 NOTE 1: Output voltages are measured at the output connector. NOTE
46、 2: Measurements are made with an oscilloscope of at least 20 MHz bandwidth. Output should be bypassed at the connector with a 0,1 F ceramic disk capacitor and a 10 F electrolytic capacitor to simulate system loading. ETSI ETSI TS 102 874-2 V1.1.1 (2010-07)144.2.2 Short Circuit Protection And Over C
47、urrent Protection The power supply shall be protected from damage of a short circuit at the output or too high output current, irrespective of the duration of the existence of the fault and shall auto-recover when the fault is removed. The power supply shall not activate the over current protection
48、at start up, while the output is connected to a 2 200 F electrolytic capacitor. 4.2.3 Output Over Voltage Protection When 12 V output voltage reaches to its over - voltage protection trigger point the power supply shall be shutdown and output voltage shall not exceed 16 V Max. This include Control L
49、oop failure. g3PIN# Output Level 1 RTN(-) 2 +12 VFigure 1: Output polarity 4.3 Performance Requirement 4.3.1 Efficiency With an input voltage 100 Vac / 50 Hz, the power supply shall provide an efficiency of at least 77,85 %, measured as the average of the efficiencies at 25 %, 50 %, 75 % and 100 % of the rated load. 4.3.2 Turn On Delay Time The power supply shall switch on in less than 2,0 s at maximum load and 110 Vac / 60 Hz input. The measurement shall be made from the start of the input voltage, up to the moment the ra
