45-W ultra-slim and 12-W travel-size adapters are compatible for use with an Ultrabook
Developed by Dialog’s Power Conversion Business Group (formerly iWatt Inc.), the 45 W design enables Ultrabook power adapters that are less than one-half the overall volume and approximately 50% thinner than conventional 45 W adapters. The 12 W design enables the first compact, pocket-size adapters for an Ultrabook at 68 mm x 68 mm x 17 mm thick, with a typical charge time under five hours.
Dialog’s ultra-slim adapter solutions complement the company’s power saving technology initiatives for Ultrabooks, including SmartWave multi-touch display sensor ICs and highly integrated, next-generation power management and audio solutions.
Dialog’s 45 W and 12 W designs support Intel Turbo Boost Technology with 82 W peak power capability at 10% duty cycle for the 45 W adapter and 2% for the 12 W adapter. They also easily meet, or exceed emerging, stringent global energy standards for lower standby power and higher light-load and active average efficiency in power adapters, including the proposed stringent European CoC version 5(1) and U.S. DoE(2) regulations. The 45 W design provides high, 90% active average efficiency and achieves <100mW no-load standby power with fast standby recovery time. The 12W design provides 86% active average efficiency and achieves <50mW no-load standby power with fast standby recovery time. Both designs maintain high efficiency at loads as light as 10%.
The 45 W ultra-slim design uses Dialog’s iW1762 digital pulse width modulation (PWM) controller in a PC board that fits in a 61 cubic centimetre (cc) adapter case and is up to one-half the size of conventional 45 W power adapters, which can be as large as 168cc, or more. The 12 W design uses Dialog’s iW1760 PWM controller in a PC board that fits in a pocket-size 80cc adapter case.
Volex plc provides the enclosure design for both the 45 W ultra-slim and 12 W travel adapters.
The iW1762 and iW1760 digital PWM controllers use Dialog’s PrimAccurate primary-side control technology. PrimAccurate control eliminates the need for a secondary-side regulator and opto-isolator, reducing the bill of materials (BOM) costs, improving line-voltage surge protection, and delivering overall rugged performance.
More information about the 45 W Ultrabook adapter reference design and 12 W Ultrabook travel adapter reference design.
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