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
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
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
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
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.
Language: EnglishCompany: Dialog Semiconductor Plc.Tower
Bridge House, St. Katharine's Way E1W 1AA London United KingdomPhone:
+49 7021 805-412Fax: +49 7021 805-200E-mail: firstname.lastname@example.orgInternet:
GB0059822006, XS0757015606WKN: 927200Indices: TecDAX Listed:
Regulierter Markt in Frankfurt (Prime Standard); Freiverkehr in Berlin,
Düsseldorf, Hamburg, München, Stuttgart
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