DGAP-News: Dialog Semiconductor Plc. / Key word(s): Product
Launch/Miscellaneous
Dialog Semiconductor Plc.: DIALOG SEMICONDUCTOR'S NEW SSL LED DRIVER
PLATFORM DELIVERS THE ULTIMATE IN DIMMING PERFORMANCE AT OPTIMISED BOM
COST
05.02.2015 / 08:00
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iW3688 uses digital control for highest performance phase-cut dimming and
superior TRIAC/digital dimmer compatibility; eliminates over 20 external
components including external bleeder circuit
London UK, 05 February 2015 - Dialog Semiconductor plc (FWB:DLG), a
provider of highly integrated power management, AC/DC power conversion,
solid state lighting (SSL) and Bluetooth(R) Smart technology, today debuted
its innovative solid state lighting (SSL) LED driver platform designed to
deliver the ultimate in dimmer performance and compatibility with an
ultra-low bill of materials (BOM) cost for next-generation LED bulbs. The
first LED driver from this new platform - the iW3688 - delivers smooth,
flicker and shimmer-free dimming supporting the widest range of phase-cut
dimmers. It also enables manufacturers to drive down the manufacturing cost
of LED bulbs by using Dialog's patented integrated digital control
technology to eliminate more than 20 components, including the external
bleeder circuit.
The iW3688 single-stage LED driver is designed for applications up to 20W,
including A-style, BR, candle, GU10 and PAR bulbs and T8 LED tubes, as well
as external lighting ballast drivers. It uses Dialog's patented intelligent
digital dimming control technology to provide exceptional compatibility and
performance with the most challenging TRIAC and digital dimmers, while
Dialog's patented sophisticated digital algorithms enable integrated active
biasing for high performance dimming at a lower cost compared to
conventional external bleeder circuits.
"Dialog invented digital adaptive control LED driver ICs to optimise SSL
luminaire performance and to drive the cost of LED lighting down to an
affordable price point for mass consumer adoption" explains Davin Lee,
Senior Vice President and General Manager of the Power Conversion Business
Group at Dialog Semiconductor. "Our innovative iW3688 LED driver platform
once again raises the bar and extends our lead in wide dimmer
compatibility, exceptional dimming performance and ultra-low BOM cost -
sophistication and performance that can only be achieved with digital
control."
TRIAC dimmers require a minimum load current to maintain forward
conduction. This is a problem for highly efficient, low-power LED bulbs
since they may fail to draw enough current through the TRIAC to clear the
holding current threshold, resulting in flicker and shimmer in dimmable LED
bulbs. Many low-power bulb designs address this issue by using an external
bleeder circuit to draw extra current through the TRIAC while it is
conducting. However, the disadvantage is these bleeder circuits require
additional external components and dissipate additional power inside the
bulb, significantly raising the internal temperature and shortening the LED
bulb operating lifetime.
The iW3688 eliminates the cost of up to 20 external components in the bulb
design, including as many as 10 required for the external bleeder circuit,
and instead uses Dialog's integrated digital algorithms that modulate
primary FET switching to draw extra current during dimming. This ensures
the input current continuously stays above TRIAC biasing thresholds during
forward conduction, eliminating the need for an external bleeder circuit.
The iW3688 further reduces BOM costs by simplifying the EMI filter circuit
and integrating the current sink, switching and VCC charging circuits.
Additional savings come from the iW3688's advanced IC power management and
voltage sensing, which allow the use of low-cost, off-the-shelf inductors.
The iW3688 integrates Dialog's patented over-temperature protection (OTP)
de-rating technology to address LED bulb lifetime issues caused by
excessive heat. OTP technology monitors the temperature inside the sealed
SSL bulb and seamlessly dims light output if the temperature rises above a
safe operating threshold, then restores brightness as temperature falls.
This results in cooler operation, avoids exceeding the temperature rating
of the electrolytic capacitors, and helps ensure a predictable and safer
bulb operating life.
iW3688 Key Features
- Single-stage with up to 20W output power
- Digital algorithms provide exceptional dimmer compatibility - TRIAC and
digital
- Highest performance phase-cut dimming
- Immune to noise and instability - no shimmering
- Automatic detection of dimmer type
- Wide dimming range 1% to 100%
- Configurable dimming parameters
- Lowest total BOM size/cost
- Integrated current sink, switching and VCC charging circuit
- Uses low-cost, off-the-shelf inductor
- No added cost for potting
- Low total harmonic distortion < 20% with high PF > 0.95
- Built-in LED over-temperature protection derating
The iW3688 is available today in an SOIC14 package, and expected to be in
volume production in the second Quarter of 2015.
Product summary is available: iW3688 Product Summary.
Dialog iW3688 LED driver video:
http://www.dialog-semiconductor.com/media-centre/multimedia-library.
â ENDS â
Company Contact:
Lauren Ofstedahl
Dialog Semiconductor
Phone: +1 (408) 845-8518
lauren.ofstedahl@diasemi.com
Web: www.dialog-semiconductor.com
Twitter: @DialogSemi
Sherry Hill
Dialog Semiconductor
Power Conversion Business Group
Phone: +1 (408) 628-6521
sherry.hill@diasemi.com
About Dialog Semiconductor
Dialog Semiconductor provides highly integrated standard (ASSP) and custom
(ASIC) mixed-signal integrated circuits (ICs), optimised for Smartphone,
Tablet, IoT, LED Solid State Lighting (SSL) and Smart Home applications.
Dialog brings decades of experience to the rapid development of ICs while
providing flexible and dynamic support, world-class innovation and the
assurance of dealing with an established business partner. With world-class
manufacturing partners, Dialog operates a fabless business model and is a
socially responsible employer pursuing many programs to benefit the
employees, community, other stakeholders and the environment we operate in.
Dialog's power saving technologies including DC-DC configurable system
power management deliver high efficiency and enhance the consumer's user
experience by extending battery lifetime and enabling faster charging of
their portable devices. Its technology portfolio also includes audio,
Bluetooth(R) Smart, Rapid Charge(TM) AC/DC power conversion and
multi-touch.
Dialog Semiconductor plc is headquartered in London with a global sales,
R&D and marketing organisation. In 2014, it had approximately $1.16 billion
in revenue and was one of the fastest growing European public semiconductor
companies. It currently has approximately 1,400 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).
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Language: English
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: jose.cano@diasemi.com
Internet: www.diasemi.com
ISIN: GB0059822006, XS0757015606
WKN: 927200
Indices: TecDAX
Listed: Regulierter Markt in Frankfurt (Prime Standard);
Freiverkehr in Berlin, Düsseldorf, Hamburg, München,
Stuttgart
End of News DGAP News-Service
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319775 05.02.2015
DGAP-News: Dialog Semiconductor Plc.: DIALOG SEMICONDUCTOR'S NEW SSL LED DRIVER PLATFORM DELIVERS THE ULTIMATE IN DIMMING PERFORMANCE AT OPTIMISED BOM COST
| Source: EQS Group AG