Peter B. Green, head of the International Rectifier (IR) LED division, recently pointed out that the offline LED power supply market is mainly divided into high-power and low-power parts, which are roughly divided into 50W, excluding low-voltage applications such as handheld devices. The development of LED replacement bulbs and other new LED lighting is very rapid, and the main market tends to be offline LED lighting power.
Lamp replacements based on integrated LEDs mostly use a simple, non-isolated buck regulator LED driver circuit. These products use the fewest component count and lowest cost, but must also provide enough lumens per watt, and a power factor higher than 0.7, with standard triac dimmer dimming ability. Products that are not meeting market performance requirements are gradually being replaced, and the US Department of Energy's Energy Star program is one of the reasons for this change.
High power LED drivers typically require insulation isolation to meet UL standards. This often requires a power factor greater than 0.9 and dimming capability, which may be achieved by methods other than the base dimmer. There is also a need to produce at least the same lumens per watt of fluorescent light and a longer lifetime.
Allan Lin, general manager of Diodes' LED lighting business unit, believes that the development of off-line LED lighting power will change the LED sales angle, from low-current, high-brightness LEDs (for mobile phones, signs and laptops) that sell large quantities of DC/DC power supplies. , to the sale of higher current LEDs (usually lighting applications) for AC/DC power supplies. This will increase the overall general lighting AC/DC LED driver market and increase the need for lower cost power components.
LED backlighting TVs and other large LCD TV applications are also welcoming other development spaces. They are moving from CCFL to LEDs, further driving the market for higher current LEDs, higher voltage power supplies, and increasing the demand for higher power LEDs that drive many large parallel chains.
12V water pump, generally refers to a micro direct current water pump powered by DC 12V.
Micro water pump, refer to: each has one outlet and inlet that can out and in, and inlet can form vacuum or negative pressure continuously; outlet form larger output pressure; The working medium is water or liquid; A machine of small size. Compared to the alternating current water pump, direct current is safer, and the size is smaller and convenient. Micro DC water pump mainly applied to water treatment. environmental protection.medical treatment.scientific laboratory etc, that need to meet small size.low noise.low power and so on, it can be widely used in water circulation.cooling.raise.transfer.pressure boost.mist spray.sprinkle.transport and so on.
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