2012年12月20日星期四
New LED-Lighting Driver Design from Power Integrations Delivers Long Lifetime
Power Integrations (NASDAQ: POWI), the world leader in high-efficiency, high-reliability LED-driver ICs, today announced a new long-lifetime LED-driver reference design.Yesterday saw the Solar Laptop charger, simple design of the shopping section of the package, wrapped in fun colors, I feel capable of carrying many interesting stories ah! Qin Liang drinking beverages, consumer ears heard the crowd's voice heard, and also to feel the vitality which flows will think we are serious in live, according to their own pace to live, I can not lose them ah. DER-340 describes a wide-range (90 VAC to 308 VAC), high-power-factor LED-driver power supply that is suitable for high-bay, exterior and street-lighting applications.The LED driver detailed in DER-340 uses Power Integrations' LinkSwitch-PH family of power conversion ICs which combine single-stage PFC and accurate CC output control. Single-stage LED driver architectures typically yield up to 5% higher efficiency than two-stage designs,If you have purchased an iPhone for the first time than it may be difficult task for you to pick out a new iphone protective case. In the market several hundreds of cases are available to make a choice but you have to act wisely as most of them look almost similar. which combine losses from separate PFC and constant-current circuits. High-voltage aluminum electrolytic bulk capacitors - the least reliable component in traditional lighting power supply circuits - are not required in the single-stage approach, making 50,They can last substantially lengthier than halogen lights.Although halogen bulbs can ordinarily last for two thousand hrs to 4 thousand hours, metal machining can last for twenty-five thousand hours to eighty thousand hours.This implies that halogen light bulbs can only be employed for months but LED light bulbs can really last for a long time and even decades.000-hour lifetimes attainable. In addition to providing a very effective solution for standard lighting applications in benign environments,For some people who like to forget when put their china tablet inside the picket, this waterproof case will be a good solution for them.When you get caught in unpredicted rain, this iPhone 5 cases that have waterproof ability will give you the best protection. DER-340 copes with conditions of poor ventilation and high temperatures in industrial applications through the use of ceramic output capacitors and an accurate hysteretic thermal shutdown feature included in the LinkSwitch-PH IC.
Comments Andrew Smith,So, how can you select the right Motion sensor light?Instead of blindly scouring websites searching for cases that blow you away attempt to spend a little bit of time taking into consideration the lifestyle that you simply live after which think about the message that you would like to transmit with other people. product marketing manager for Power Integrations: "Power supplies are often the weak link in LED lamps. This is especially true for industrial and infrastructure lighting applications where difficult operating conditions can quickly cause traditional power supplies to fail. This reduces the cost-effectiveness of solid-state lighting and conflicts with fixture lifetime expectations built on the basis of the longevity of LEDs alone. With high power conversion efficiency and no high-voltage aluminum electrolytic bulk capacitors, DER-340 provides an architecture that avoids this problem and delivers on the long-lifetime promise." The single-stage topology also reduces component count, allowing developers to use single-sided boards and smaller enclosures. DER-340 is highly energy-efficient – above 88% at 230 VAC and over 87% at 120 VAC. Output current tolerance is less than 5% across line, load and temperature. Power Integrations' LinkSwitch-PH ICs feature comprehensive integrated protection and reliability features including: output open circuit / output short-circuit protection with auto-recovery; line input overvoltage shutdown which extends voltage withstand during line faults; and auto-recovering thermal shutdown with large hysteresis that protects both components and the PCB. DER-340 LED-driver power supplies meet all applicable international standards including IEC 61000-4-5, IEC 61000-3-2 Class C, and EN55015 B.
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