LED lighting has requirements on low-voltage driver chip

by Ente G. LED lighting for sale
LED driver chip should meet the normal DC input voltage range of 8 ~ 40V to cover wider application needs. Pressure capacity is preferably greater than 45V. When the input is AC 12V or 24V, the simple bridge rectifier output voltage with the grid voltage fluctuations, especially when the high voltage, the output voltage will be high. If the driver IC is not wide input voltage range, the breakdown tends to be increased when the grid voltage, the LED light source to burn.

LED driver chips required are greater than the nominal output current 1.2 ~ 1.5A. As the lighting of the LED light source, 1W power LED light source, the nominal operating current of 350mA, the nominal operating current 3W power LED light source is 700mA. High power LED light source more current needs, the LED lighting driver IC selected must have enough current output must be designed to work the drive IC 70 to 90% of the product the best working area of the full-load output. Use full load output current driver IC in a small space heat, poor lighting, lamps easily lead to fatigue and early failure.

LED driver chip output current must be kept constant, so as to stabilize the LED light, not blinking. With the same number of driver chips under the same conditions, the output current should be as consistent as possible, that is discrete to be small, in order to ensure an effective and orderly when such a large volume automated production line. For certain discrete output current drive chip, required in the factory production line or sub-file selection, PCB board to adjust the current setting resistor size, so that the production of LED lamps on the same constant current LED driver board brightness of the light-emitting line to maintain the consistency of the final product.

LED driver chip packaging should be conducive to rapid cooling driver chip die, as will die directly bound to the copper, and has a pin that extends directly to the outside of the package in order to facilitate rapidly soldered directly on the PCB copper thermal conductivity. If the chip is similar to a long 4x4mm by 300 ~ 1,000 mA current, power consumption and heat generated are bound, therefore, the chip itself is also a very important physical and thermal structure. led grow lights

LED driver chip anti-EMI, noise, and high voltage capability is also related to the whole LED lighting products can pass CE, UL certification, and therefore should be used and the design of advanced driver chip topology and high-pressure production process.

The power consumption of the LED driver chip itself should be less than 0.5W and the switching frequency should be greater than 120Hz in order to avoid visible flicker generated from frequency interference. In short, LED green lighting promotes the driver chip to the development of an innovative design. LED lighting is inseparable from the driver chip, requiring multi-functional LED light source driver IC. If the LED lamp used is less than a 36V AC power supply, a non-isolated power supply can be considered; if you choose 220V and 100V AC power supply, then isolation should be considered. AC 100 ~ 220V directly drive chip, depending on the application requirements for volume demanding, technically there is higher demand, the greater the difficulty, the current efforts of developing countries are. The mass-market demands for LED lamps give all the integrated circuit design companies the opportunity to succeed again. If can transform rapidly and produce products as early as possible, there will be a lot of opportunities to win. best led headlights

Sponsor Ads

About Ente G. Senior   LED lighting for sale

3 connections, 0 recommendations, 775 honor points.
Joined APSense since, June 30th, 2016, From SEF, Europe.

Created on Mar 10th 2021 02:13. Viewed 173 times.


No comment, be the first to comment.
Please sign in before you comment.