12v led downlight to the requirements analysis

Drive chip is the core component lamp LED panel. Main function is to ac voltage conversion for a constant current source of power, and according to the requirements of the device to complete and by 12v led downlights and current matching.
LED panel of the lamp is durable, reliable, and LED drive chip has a very close relationship, then LED lamp panel to drive chip that has the request? Below is automated you reveal one.
1. The drive chip packages should be helpful for LED panel tubes core rapid heat dissipation, if in similar x4mm 4 long time on the chip by 300 ~ 1000 mA current, you must produce power consumption and fever, therefore, the chip itself of physical cooling structure is very important also.
2. The drive chip output current must remain unbroken, so that the LED panel to shine light stability, not twinkle. The same driver chip in the same conditions, with the output current size to be as consistent, also is discrete to small, so large quantities of the automatic production line production can ensure effective and when the differentiation.
3. Drive chip resistance EMI, noise and high voltage is related to the ability to 12w led downlight products can be successfully through such as CE. UL authentication, so design drive the chip will adopt the advanced topology structure and high pressure production process.
4. Drive chip’s own power consumption demand is less than 0.5 W, switch work more than 120 Hz frequency requirements, in order to avoid has the power frequency interference flashing a visible. In short, LED panel lights drive chip to the innovative design to development.
5. The nominal drive chip input voltage range should be met dc 8 ~ 40 V, to cover a wider application. Compression ability be best 45 V. When the input of the ac 12 V or 24 V, simple bridge rectifiers output voltage can follow the network voltage fluctuation, especially when the voltage on the high side, the output voltage will also be on the high side. If the drive IC no wide input voltage range, often in the network voltage rise would be breakdown, which burned LED light source panel.
6. Drive chip’s nominal output current demands more than 1.2 ~ 1.5 A. As illumination use LED light source, 1 W power LED panel of nominal working current light source for 350 mA lighting applications, 3 W power LED panel of nominal working current light source for 700 mA lighting applications.
The power of the LED light source needs more current, so the selection panel LED lamp driver IC must have enough current output, design products must furthermore make drive IC work in full load output 70-90% of the best work area. Use full load output current driver IC LED panel in the constricted space cooling not free, easy to cause the LED panel lights happen fatigue and early failure.
LED panel lights drive chip can, so need to 15 watt led downlight. If LED panel lamp selection of the ac power 36 V, can consider the isolation power supply; If choose 220 V and 100 V ac power, should think to isolate the power supply. Directly use the ac 100 ~ 220 V drive chip, for application on the volume of the demanding requirements, in the technical and higher requirements, the more difficult it is, the present diverse countries are working to develop.