The Design Of LED Floodlight

- Jul 11, 2017 -


LED Floodlight is a point light that can be evenly illuminated in all directions, its irradiation range can be arbitrarily adjusted, in the scene is shown as a of the picture of the eight-body. LED Floodlight is the most widely used in the production of a light source, standard led floodlight used to illuminate the entire scene. Many led floodlight can be used in the scene to produce better results.

LED Floodlight is the most widely used in the effect diagram of a light source, in the scene can be used in many led floodlight coordination function to the birth of better results. It is the best way to illuminate an object in all directions from one particular point to another, LED Flood Light using it to analogy bulbs and candles. LED floodlight can be placed anywhere in the scene.

For example, it can be placed outside the camera range or inside an object. It is common to use many different colors of LED floodlight in the scene. These led floodlight can cast shadows and mix them on the model. Because of the wide range of LED floodlights, led floodlight is very easy to predict, LED Flood Light and there are many ancillary uses, such as the LED floodlight placed near the surface of the object, will produce bright light on the surface.

Note that the LED floodlight can not be built too much, otherwise the effect will appear dull and stiff. Therefore, in peacetime effect map production, pay more attention to the lighting parameters and the effect of the entire scene of the effects of the light, accumulate experience, LED Flood Light master the lighting collocation skills.

LED Floodlight for Low-voltage Drive chip is required, the specific requirements of the small series also summed up, as follows:

1. Drive chip anti-EMI, noise and high voltage ability is also related to the entire LED lighting products can be successfully passed CE, UL certification, LED Flood Light so in the design of the driving chip to choose the advanced topology and high-pressure production technology.

2. Driver chip packaging should be conducive to the drive chip tube core fast cooling, such as the bare piece directly bound on the copper plate, and has a pin directly extended to the package, so that directly welded in the PCB board copper foil on the rapid thermal conductivity. LED Flood Light If it takes a long time to pass through 300~1 on a chip similar to 4x4mm, 000mA current will inevitably generate power and heat, so the physical heat dissipation structure of the chip itself is also very important.

3. The nominal input voltage range of the driving chip should meet the DC 8~40v to cover the wide application needs. It is better to withstand pressure than 45V. When input is AC 12V or 24V, LED Flood Light the output voltage of a simple bridge rectifier will fluctuate with the voltage of the network, especially when the voltage is high, the output DC voltage will be high. If the drive IC does not have a wide input voltage range, it will often be penetrated when the grid voltage is elevated, thus burning the LED light source.

4. The nominal output current of the driver chip is greater than 1.2~1.5A. As the LED light source for lighting, the nominal working current of 1W power LED light source is 350mA, the nominal working current of 3W power LED light source is 700mA. Large power LED light source needs more current, LED Flood Light so the LED lighting selection of the driver IC must have enough current output, design products must also make the drive IC work in full load output of the $number best working area. The use of full load output current of the driver IC in the lamp small space cooling, easily led to fatigue and early failure.

5. The driver chip's own power consumption requirement is less than 0.5W, the switch operating frequency requirements are greater than 120Hz, in order to avoid the occurrence of frequency interference generated visible flicker. In short, led green lighting drives the drive chip to the innovation design development. LED lighting can not be separated from the driver chip, so the need for multi-function LED light source driver IC. If the LED lamps choose the following 36V AC power supply, you can consider the non isolated power supply, if you choose 220V and 100V AC power supply, you should consider isolating power supply. Direct use of AC 100~220v driver chip, because of the application of the volume of demanding requirements, in the technology there are higher requirements, greater difficulty, the current countries are in the efforts to develop. The huge demand of LED lamps market gives all IC design companies the chance to succeed again, if the rapid transformation, early out of the product, then win a lot of opportunities.


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