DGAP-News: Dialog Semiconductor Plc.: DIALOG SEMICONDUCTOR PWM CONTROLLER IC LOWERS COST AND STANDBY POWER IN SMARTPHONE POWER SUPPLIES
ID: 945841
Produkteinführung
Dialog Semiconductor Plc.: DIALOG SEMICONDUCTOR PWM CONTROLLER IC
LOWERS COST AND STANDBY POWER IN SMARTPHONE POWER SUPPLIES
17.09.2013 / 08:00
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DIALOG SEMICONDUCTOR PWM CONTROLLER IC LOWERS COST AND STANDBY POWER IN
SMARTPHONE POWER SUPPLIES
iW1679 digital AC/DC PWM controller is first to replace FETs with
lower-cost BJTs in 10 Watt adapters and chargers
Kirchheim/Teck, Germany, 17 September 2013 - Dialog Semiconductor plc (FWB:
DLG), a provider of highly integrated power management, audio, AC/DC and
short-range wireless technologies, today launched the industry's first
digital pulse width modulation (PWM) controller that can easily and
efficiently drive low-cost, 10W power bipolar junction transistor (BJT)
switches to reduce the BOM cost in 5V/2A smartphone adapters and chargers.
The new iW1679 allows designers to replace field effect transistors (FETs)
with lower-cost BJTs and address the market trends for lower standby power
and higher light-load and active average efficiency in smartphones, media
tablets and consumer electronic products. Developed by Dialog's Power
Conversion Business Group (formerly iWatt Inc.), the iW1679 delivers on
Dialog's goal to expand its addressable market.
The iW1679 reduces BOM costs while achieving high efficiency through the
use of Dialog's adaptive multi-mode PWM/PFM control that dynamically
changes the BJT switching frequency. This optimises the system to improve
light-load efficiency, power consumption and EMI. The iW1679 provides high,
83% active average efficiency, maintains high efficiency at loads as light
as 10%, and achieves<30mW no-load standby power with fast standby
recovery
time. This enables designers to meet or exceed emerging global energy
standards, including the proposed stringent European CoC version 5(1),
which is anticipated to require 76% active average efficiency and high
light load efficiency down to 10% loads, as well as the proposed U.S.
DoE(2) regulation, expected to require 79% active average efficiency, and
the Energy Star EPS 2.0(3), which will require 73% active average
efficiency.
'The use of BJTs is prevalent in 5W and lower power supplies, where Dialog
is a leader with a wide range of digital PWM controllers designed to drive
BJTs,' commented Ron Edgerton, Vice President and General Manager of
Dialog's Power Conversion Business Group. 'With the iW1679, we are applying
this extensive knowledge to bring the same low cost, high efficiency and
performance benefits to higher power applications.'
While BJTs reduce cost compared to FETs, BJT drive requirements are more
complex. The iW1679 solves this challenge by using Dialog's patented
digital control technology to actively modulate the BJT base current drive.
This optimises performance and improves efficiency by keeping the BJT out
of saturation. Since BJTs have softer switching compared to FETs, they
generate less noise and, therefore, have inherently lower EMI. The iW1679
features Dialog's EZ-EMI(R), an internal EMI technique that uses valley
mode switching to further reduce EMI, simplify manufacturing and minimising
the need for external EMI filtering components. It also includes a
proprietary switching mode that results inno audible noise from the
controller.
The iW1679 lowers BOM costs up to 10%(4) compared to FET-based designs.
Additional BOM cost savings come from Dialog's patented PrimAccurate(TM)
primary-side control technology that eliminates the need for a
secondary-side regulator and optical feedback isolator.
The iW1679 offers a user-configurable, four-level cable drop compensation
option to eliminate the ordering and inventory challenges of stocking
multiple product versions for various output voltage needs. It comes in a
standard, low-cost, 8-lead SOIC package and offers full protection from
fault conditions, including output short-circuit, output over-voltage,
output over-current, and over-temperature protection.
iW1679 Key Features
- Output power: 5W to 10W
- Drives low-cost, 10W BJT power switches to lower BOM cost
- Patented PrimAccurate(TM) primary-side control increases reliability,
reduces solution size, lowers BOM cost
- Proprietary, adaptive multi-mode PWM/PFM optimises light-load
efficiency, EMI and power consumption
- Patent-pending quasi-resonant control optimises efficiency at all loads
- High 83% active average efficiency
- Ultra-low<30mW standby power consumption
- Meets stringent global energy efficiency standards, including: U.S.
DoE, European CoC version 5, Energy Star EPS 2.0
Packaging, Pricing, Availability
The iW1679 is available now in production quantities and is priced at US
$0.29 each in 1000-piece quantities. Product brief is available: iW1679
Product Brief.?ENDS?PrimAccurate and EZ-EMI are registered trademarks of iWatt Inc., an
affiliated company of Dialog Semiconductor plc. All other trademarks and
registered trademarks are the property of their respective owners.
(1) European Code of Conduct (CoC) on Energy Efficiency of External Power
Supplies Version 5
(2) US Department of Energy (DoE), Regulatory Information Number
RIN-1904-AB57
(3) Energy Star EPS 2.0
(4) BOM cost comparison based on Dialog's analysis of published typical
application circuits; includes cost of PWM controller IC.
Note to Editors:
Downloadable product photos:
High Resolution:
http://iwatt.com/wp-content/uploads/2013/09/1679-iWatt-300dpi.jpg
Low Resolution:
http://iwatt.com/wp-content/uploads/2013/09/1679-iWatt-130dpi.jpg
Company Contacts:
Lauren Ofstedahl
Dialog Semiconductor
Phone: +1 (408) 845-8518
lauren.ofstedahl@diasemi.com
Sherry Hill
Dialog Semiconductor
Power Conversion Business Group
Phone: +1 (408) 628-6521
sherry.hill@diasemi.com
Web: www.dialog-semiconductor.com
Media Contacts:
Racepoint Group
Lauren Ginsberg
Phone: +1 (617) 624-3254
lginsberg@racepointgroup.com
Michelle Moody
Moody&Associates
Phone: +1 (214) 363-3460
michelle@moodypr.com
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 near Stuttgart with a global
sales, R&D and marketing organisation. In 2012, it had $774 million in
revenue and was one of the fastest growing European public semiconductor
companies. It currently has approximately 1,000 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).
Ende der Corporate News
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Sprache: Deutsch
Unternehmen: Dialog Semiconductor Plc.
Tower Bridge House, St. Katharine's Way
E1W 1AA London
Großbritannien
Telefon: +49 7021 805-412
Fax: +49 7021 805-200
E-Mail: jose.cano@diasemi.com
Internet: www.diasemi.com
ISIN: GB0059822006, XS0757015606
WKN: 927200
Indizes: TecDAX
Börsen: Regulierter Markt in Frankfurt (Prime Standard);
Freiverkehr in Berlin, Düsseldorf, Hamburg, München,
Stuttgart
Ende der Mitteilung DGAP News-Service
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