The rival USB Power Delivery Standard that allows compatible USB-C cables and ports to carry up to 100W of power has become the widely adopted charging standard.

“Will this new standard be widely adopted? It is hard to say. This time IEC might have a have a swing and a miss on its hands: the new standard will be directly competing with the rival USB Power Delivery Standard, allowing compatible USB cables and ports to carry up to 100W of power – easily enough to charge a laptop without the need for a traditional DC socket like that proposed by the IEC.”
- so this IEC idea seems to be a miss like I predicted that it could be

CHROMEBOOK DESIGNER Google has been forced to recall chargers for its Chromebook 11 after a number of them were found to have overheated and melted.

Sales of the machine, which is built by HP, were suspended last month because of the overheating charger problem

The unit is powered by a standard microUSB connector and HP has advised users to “stop using the bundled charger immediately”. In theory, anyone who is left without power can simply substitute one of the other half dozen USB chargers they probably have lying around the house, however they do so at their own risk.

HP and Google have advised that Chromebook 11 users can make use of other microUSB chargers, as long as they are Underwriters Laboratories (UL) certified.

IEC 60906-1 is an international standard for 230 V AC domestic power plugs and sockets. It was conceived as a common mains plug and socket standard for use in territories with 230 V mains. The standard was originally published by the International Electrotechnical Commission in 1986. Although it looks similar to the Swiss SEV 1011 plug, its dimensions are different. So far, only South Africa has introduced a standard (SANS 164-2) based closely on IEC-60906-1. Brazil used it as the starting point for its NBR 14136 standard, but this does not conform to IEC-60906-1.

For most existing European systems (Schuko, etc.), it would be possible to design sockets that can accept both the traditional plug as well as the IEC 60906-1 Class I and II plugs, thereby enabling a smooth transition to the new system. However, the IEC 60906-1 standard explicitly discourages the use of multi-standard sockets, claiming that such sockets are likely to create safety problems when used with plugs from other countries.

IEC TC 100: AUDIO, VIDEO AND MULTIMEDIA SYSTEMS AND EQUIPMENT

The scope of the current draft standard reads, “This standard is applicable to DC power supply which is connected to the portable computers and supply power to them switching 220V into DC lower than 60V. And this standard specifies general requirement such as types of DC power supply for the portable computers, electrical characteristics and criteria for development, the structure of power input cords and power output connectors, safety requirement during the manufacturer specific maintenance, operation, installation and of installed equipment (refer to IEC 60950-1 for the safety), and Performance requirement such as DC power supply capacity parameter, measuring methods, capacity level and EMC requirements (refer to IEC 61204 series).”

Following specifications were taken into account in advance as key parameters before comments resolution:
- Output voltage: 16V (Japan), 19V (Korea, US), 20V (China)
- Power capacity: 60 or 65 W, 90W, 120W
- EMC: Adapter + notebook  EMC? (Prepare test data and discuss in next meeting)
- Connector and ID pin:
connector – check IEC 61076-XXX 5.5mm round type
ID pin – discuss control parameters in next meeting
- Safety: IEC TC 108
- Others: CISPR 22/24 will be discussed in the next meeting.