|By Business Wire||
|February 26, 2014 02:40 AM EST||
Dialog Semiconductor plc (FWB:DLG), a provider of highly integrated power management, AC/DC, solid state lighting and short-range wireless technologies, is unveiling the world's first AC/DC rapid charge controller compatible with MediaTek's new Pump Express(TM) fast charge protocol. The iW1680 is a single-chip solution that uses Dialog's intelligent rapid charge digital algorithm and digital primary-side control technology to significantly reduce charge times in USB AC/DC wall chargers with no bill of materials (BOM) cost premium over slower conventional charging technologies. "Pump Express" is MediaTek's proprietary protocol for fast charging mobile devices, including feature phones, smartphones and media tablets, up to 45 percent faster than conventional chargers.
Dialog is currently featuring its rapid charge AC/DC technology at Stand 7C05 in Hall 7 of the Mobile World Congress Exhibition in Barcelona.
Conventional USB chargers provide a fixed 5-volt (V) supply that requires a buck converter inside the handset to convert the 5V down to the required output voltage. The iW1680 uses Dialog's built-in, intelligent rapid charge digital algorithm that communicates with MediaTek Pump Express-compatible phones and dynamically scales the output voltage of the wall charger to deliver the optimized level required by the phone at any given time. This lowers the overall system cost by eliminating the need for an input buck converter in the phone and reduces charge times by enabling more efficient power transfer to the phone battery.
Building on Dialog's leadership in accurate primary-side control for AC/DC power supplies with the latest derivative of its PrimAccurate(TM) primary-side controller platform, the iW1680 rapid charge AC/DC controller embeds sophisticated digital analysis on the primary side of the isolated power supply within the charger. This allows voltage scaling without the need for any intelligence on the secondary side and further reduces costs.
"Reducing charge time is one of the most compelling trends in smartphones, especially with the rapid and endless surge in ever more power-hungry applications," said Mark Tyndall, Senior VP Corporate Development & Strategy, GM Power Conversion Business Group at Dialog Semiconductor. "Working closely with MediaTek, we are delighted to introduce the first Pump Express-compatible AC/DC controller and bring our complementary rapid charge technologies to the China market quickly and cost effectively."
The iW1680 supports power adapters up to 7.5W, with high active average efficiency and low no-load power consumption less than 30mW. Communication between the phone and iW1680 is through the VBUS supply line. Voltage scaling is digitally managed on the primary side of the transformer in the AC/DC adapter by the iW1680, which analyses the signal of the VBUS and scales its output voltage accordingly. The iW1680 easily and efficiently drives low-cost bipolar junction transistor (BJT) switches to further drive down BOM costs and reduce electromagnetic interference (EMI).
The iW1680 comes in a 6-pin SOT23 package. Full protection features include built-in output short-circuit, and output overvoltage, output over-current and over-temperature protection. The iW1680 Product Brief is available here.
MediaTek Pump Express and iW1680 Rapid Charge AC/DC Controller Benefits
- Up to 45 percent faster charge time vs conventional chargers
- Reduced system cost: no input buck converter needed in phone, no secondary-side regulator needed in wall charger
- Backward compatible with all phones accepting USB power
- Reduced BOM for low overall system cost (phone and adapter).
‒ ENDS ‒
PrimAccurate is a registered trademark of iWatt Inc., an affiliated company of Dialog Semiconductor plc. All other trademarks and registered trademarks are the property of their respective owners.
About Dialog Semiconductor
Dialog Semiconductor creates highly integrated, mixed-signal integrated circuits (ICs), optimised for personal portable, low energy short-range wireless, LED solid state lighting and automotive applications. The company provides flexible and dynamic support, world-class innovation and the assurance of dealing with an established business partner.
With its focus and expertise in energy-efficient system power management and a technology portfolio that also includes audio, short-range wireless, AC/DC power conversion and multi-touch, Dialog brings decades of experience to the rapid development of ICs for personal portable and digital consumers applications, including smartphones, tablets, Ultrabooks(TM) and digital cordless phones.
Dialog's power management processor companion chips increase the performance of portable devices by extending battery lifetime, enabling faster charging and enhancing the consumer's multimedia experience. With world-class manufacturing partners, Dialog operates a fabless business model.
Dialog Semiconductor plc is headquartered in London with a global sales, R&D and marketing organisation. In 2013, it had approximately $910 million in revenue and was one of the fastest growing European public semiconductor companies. It currently has approximately 1,100 employees worldwide. The company is listed on the Frankfurt (FWB: DLG) stock exchange (Regulated Market, Prime Standard, ISIN GB0059822006) and is a member of the German TecDax index. It also has convertible bonds listed on the Euro MTF Market on the Luxemburg Stock Exchange (ISIN XS0757015606).
About Mediatek Inc.
Mediatek is a pioneering fabless semiconductor company, and a market leader in cutting-edge systems on a chip for wireless communications, HDTV, DVD and Blu-ray. Mediatek created the world's first octa-core smartphone platform with LTE and its CorePilot technology released the full power of multi-core mobile processors. Mediatek [TSE:2454] is headquartered in Taiwan and has offices worldwide. Please visit www.mediatek.com for more information.
Company: Dialog Semiconductor Plc.
Tower Bridge House, St. Katharine's Way E1W 1AA London United Kingdom
Phone: +49 7021 805-412
Fax: +49 7021 805-200
E-mail: [email protected]
ISIN: GB0059822006, XS0757015606
Indices: TecDAX Listed: Regulierter Markt in Frankfurt (Prime Standard); Freiverkehr in Berlin, Düsseldorf, Hamburg, München, Stuttgart
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