Technical standards

Standards Time blog / 2011

EC publishes MoU Annex III Guide on Implementation

The European Commission has published MoU Annex III providing guidance on how initial common mobile phone chargers should comply with the MoU requirements. The recommendations relate to the two standards developed by CENELEC and ETSI: IEC 62684 and EN 301 489-34. In addition to several clarifications, Annex III includes the following:

  • a revised Common Mode Noise (CMN) test method requiring measurement of all pulses longer than 250 ns (ie with frequencies < 4 MHz);
  • a CMN limit ≤ 2 Vp-p; and
  • a recommendation that output ripple measurement during immunity testing is ‘not critical’. This is in line with ETSI’s published final draft V1.3.1 of EN 301 489-34, due for approval in May 2012.

Click here or contact CamSemi for more information.

Energy Star publishes new lamps specification version 1.0

Energy Star has now published version 1.0 of a new standard to replace both ‘CFLs’ and ‘Integral LED Lamps’. Key points for LED drivers include:

  • power factor > 0.7 for PIN > 5 W; lamps with PIN ≤ 5 W are PF-exempt;
  • efficacy ≥ 55 lm/W for PIN < 10 W and efficacy ≥ 60 lm/W for PIN ≥ 10 W;
  • lamp lifetime ≥ 10,000 hrs and warranty ≥ 2 years, based on usage of ≥ 3 hours per day.

A definition, method of measurement and compatibility metric for dimmable lamps are also all in development.

Click here or contact CamSemi for more information.

USB IF publishes BC1.2 compliance plan

The USB Implementers Forum has published its Battery Charging 1.2 Compliance Plan to provide test sequences for many mobile phone and other chargers rated at 5 V.

Click to download the full specification/compliance plan/other documents or contact CamSemi for more information.

EN 50563: EPS efficiency test method now approved

CENELEC has now approved a new European standard specifying measurement methods for EPS power consumption and reporting of results.  Key requirements for EN 50563:2011 include:

  • specific tolerances on parameters;
  • defined warm-up periods at full load and stability periods prior to each measurement;
  • and reference to EN 50564 which supports EC regulation 1275/2008 for several items including mains PSU requirements and details of measurement technique.

Click here or contact CamSemi for more information.

USB 3.0 Promoter Group plans new power delivery spec

The USB 3.0 Promoter Group has announced plans to create a new power delivery specification that will extend the capabilities and usages of cable bus power in USB applications.  V1.0 of the specification is due to be published in June 2012.

The new specification will be part of USB 3.0 but also be backward compatible with USB 2.0.  Key features include:

  • a range of voltage and current profiles to deliver power up to 100 W;
  • communication between devices for voltage and current profile-setting;
  • the need for new cables for all but 5 V, 1.5 A (ie existing Battery Charging) operation; existing ID connector pins will identify new cables;
  • support for stand-alone power supplies;
  • and planned for DC power delivery as well as charging.

Please contact CamSemi for more details or click here to read the USB-IF press announcement.

EU study targets ‘networked standby’

A European Commission preparatory study is aimed at reducing the standby energy consumption of household and office equipment with network connectivity. EC Lot 26 recommends all networked products have low power modes, when their main functions are not active, and defined ‘resume times’ to reactivate a main function after detecting a remotely-initiated trigger.

In addition the study proposes amending EC 1275-2008 to improve power consumption during high and low network availability, and implementing the changes in two incremental stages: from January 2014 and January 2016.  However the EU eco design requirement EC1275-2008 will still apply to standby and/or off mode performance.

Click here to download the working document, for further background notes or please contact CamSemi.

ITU L.1000 standard – version 2 - for mobile device adapters/chargers now pre-published

Version two of this influential standard for universal adapters and chargers for mobile devices has now been pre-published.  And it proposes two essential performance features for a new ‘target’ solution due to be implemented in 2014:

  • IRATED from 750 to 1500 mA (currently 500 to 1500 mA);
  • and no-load power consumption of < 30 mW (now <150 mW).

Other key points are:

  • common mode noise and ripple to conform to IEC 62684 (MoU standard);
  • and a detachable cable should have USB type-A and micro-B plugs.

Contact CamSemi for more information.

New Energy Star Luminaires V1.1 delayed to April 2012

The effective date for the latest Energy Star Luminaires standards has now been postponed from October 2011 to April 2012.

Version 1.1 of the standard has reduced test sample sizes, less rigid requirements for some tests and has been specifically amended to ease the transition from existing Solid State Lighting and Residential Light Fixture standards.

More information?

US DoE finalises revised ‘BCS and EPS’ test method

The US Department of Energy has now published amendments to its Battery Charger Systems (BCS) and External Power Supplies (EPS) test procedure. The updated test method includes:

  • an active mode efficiency test for BCS, as in CEC and Energy Star;
  • a reduced warm-up period prior to NLP measurements of 30 minutes (previously 1 hr);
  • and a new test for EPS with multiple outputs.

The development of combined BCS and EPS efficiency standards is likely to be adopted by other countries and to continue the current trend towards harmonising worldwide EPS efficiency programmes.

More information?

Energy Star proposes new Lamps specification

Energy Star is proposing a new standard to replace those for CFLs (V4.2) and Integral LED Lamps (V1.3).  The new standard is likely to consider possible changes to the following current requirements:

  • power factor >0.7 for PIN >5 W;
  • efficacy >50 lm/W for PIN <10 W or >55 lm/W for PIN ≥10 W;
  • and warranty ≥3 years (note that the warranty is already ≥ 5 years for Luminaires).

More information?

Energy Star publishes final version of STB V3 and V4

Energy Star has published its final specifications for Set Top Boxes versions 3 and 4.  Qualification is based on product usage models and takes account of features (eg DVR), technologies (eg satellite) and power consumption in defined product states (eg active sleep, deep sleep):

  • limits are expressed as maximum allowed Typical Energy Consumption (TECmax) in kWh/yr;
  • V4 is identical to V3 but with lower TECmax for all products;
  • an EPS shipped with an STB must conform to IEMP Level V;
  • and V3 effective date is September 2011; V4 is July 2013.

More information?

Energy Star outlines V2 BCS specification

Energy Star is revising its Battery Charging Systems specification to incorporate several features from the latest draft US Department of Energy document and test method.  The lowest power product category (<3 kWh) targets all battery-powered consumer electronics smaller than a netbook.  Qualifying criteria are based on product type usage models:

  • a maximum allowable Unit Energy Consumption (UECmax) in kWh/yr is defined for each product type;
  • UEC is calculated from a combination of theoretical ‘usage profiles’ and measurements of product power and energy consumption;
  • and power consumption is measured in charge, maintenance and no-battery states, so EPS active and standby performance are both important.

BCS V2 effective date was originally planned for June 2011.  More information?

EC publishes two critical MoU standards for universal mobile phone chargers

Two standards from the MoU aimed at harmonising chargers for data-enabled mobile phones have now been published and adopted.  EN 301 489-34 addresses amongst other things EMC emissions and immunity:

  • the new standard uses existing limits for emissions eg EN 55022 class B, EN 61000-3-2/3;
  • and tougher requirements for immunity, eg 10 V/m rather than 3 V/m for radiated immunity.

IEC EN 62684 (previously coded as EN50558) addresses interoperability:

  • maximum ripple 80 mVp-p;
  • and maximum common mode noise specified for 5 frequency bands up to 100 MHz.

More information?