Austin, Texas — On April 26, 2013 , Cirrus Logic (Nasdaq: CRUS) recently launched the first single-stage LED driver series CS1615 / 16 for the incandescent lamp replacement market. Due to the use of patented technology, CS1615 / 16 can provide higher dimming compatibility than other single-stage LED drivers at the same total material cost. Cirrus Logic already has a series of dual-level LED drivers and entered the LED replacement market in 2012.
In many varieties of dimmers, CS1615 / 16 can be adjusted to almost zero light output, very close to the dimming performance of incandescent bulbs. However, the dimming performance of many similar LED drivers does not reach this level. In many cases, they cannot even be dimmed below 50% of the light output. The limited dimming range, flicker and switch failure are the main factors leading to the high return rate of LED bulbs.
Tom Stein, Vice President and General Manager, Energy Division, Cirrus Logic, said: "The CS1615 / 16 series continues our product strategy to provide not only the best dimming compatibility, but also lower system costs. This focus on performance and user experience It will be the key to pushing consumers to choose LED lighting products. "
According to market research company Datapoint Research, the LED replacement market will grow from 248.5 million in 2012 to 1.9 billion in 2016.
To test dimming compatibility, Cirrus Logic developed a test method based on a comprehensive evaluation of multiple factors, including flicker-free operation (the lamp does not flicker at any point in the dimming range), smooth "monotonic" dimming (light bulb Steady dimming, no sudden drop in output brightness, no jump) and full dimming range (bulb can be effectively adjusted in the highest and lowest light output range). Cirrus Logic has tested more than 300 dimmers. These products cover the most popular styles on the market today and represent the dimmers used by most users worldwide. In the above test, CS1615 / 16 is superior to other brands in single lamp and multi-lamp configurations.
Digital control determines performance
Most dimmers are designed for incandescent lamps with purely resistive loads, but the additional electronic components inside the LED bulb pose a challenge to compatibility. Cirrus Logic's patented dimming compatibility technology recognizes the type of dimmer in use and provides corresponding operation modes to use. This adaptive digital technology can continue to realize all functions even on the most challenging front cut, back cut and intelligent digital dimmers. Cirrus Logic ’s LED drivers enable the new generation of bulbs to meet the standards set by the Energy Star Program, the American Electrical Manufacturers Association, and the California Energy Commission, and also meet the newer, more stringent requirements for dimmer compatibility proposed by other organizations.
CS1615 / 16 provides primary-side constant current control and precise LED current regulation, and has the characteristics of high efficiency, active power factor correction, and low total harmonic distortion. These ICs support isolated and non-isolated topologies and simplify the design of EMI to a minimum. CS1615 / 16 can provide output open circuit protection, output short circuit protection and external overheat protection through thermistor (NTC). The CS1615 is designed for 120VAC line voltage applications, and the CS1616 is designed for 230VAC line voltage applications.
About Cirrus Logic
Cirrus Logic is committed to developing high-precision, analog, digital, and mixed-signal integrated circuit products for a wide range of innovative markets. Based on its wide range of patented analog mixed-signal products, Cirrus Logic provides optimized products for a variety of audio and energy-related applications. The company is headquartered in Austin, Texas, and has branches in Europe, Japan, and other Asian countries. For details, please visit.
Cirrus Logic, Cirrus and TruDim are registered trademarks of Cirrus Logic Corporation. The names of other products involved in this article belong to related companies.
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