Mingwei electronic intelligent lighting solution Mingwei electronic filament lamp driving scheme SM7313
Normally, when we connect the current for the three chips in the 5050 RGB it will emitting as white LED. But it might not pure white enough. Because it will more like pale pink or pale cyan instead of pure white and it don't have the perfect consistency as the RGBW LED, which means it can't meet some user's standard.
RGBW LED RGBW LED, RGBW LED Strip, 5050 RGBW LED, SMD RGBW LED Shenzhen Best LED Opto-electronic Co.,Ltd , https://www.bestsmd.com
Mingwei Electronics is a state-level high-tech enterprise specializing in integrated circuit design, commissioning and sales. The company has been constantly carrying out technological innovations in line with market changes, and has accumulated rich experience in IC design and power supply reliability stability. And received high praise and trust from customers.
"At present, we are mainly engaged in linear lighting in intelligent lighting. The smart drive models on display this time are SM2123E and SM2133TE." Zhao Chunbo said, "Our intelligent lighting is mainly divided into three sections of dimming and segmentation, and the control methods are various. Including Bluetooth, Wifi, ZigBee, etc., and because he is a de-energized design, the cost is much lower than the traditional solution." 
In addition, in terms of filament lamp driving, Mingwei Electronics will exhibit the model number SM7313. Zhao Chunbo introduced that the product is a high-precision and high-efficiency small-volume non-isolated LED constant current drive control. The chip adopts the BUCK circuit structure and works in a fixed frequency mode. It only needs to use a relatively small chip inductor to achieve 5W or less. Output small current high voltage solution. 
"The constant current accuracy of the SM7313 can reach ±3% of the full voltage range, with fewer external components and lower cost." Zhao Chunbo said, "This filament lamp driver is the first in the industry to support plastic parts and can be placed directly into the E14 lamp holder. Filament light switch power supply."
Zhao Chunbo believes that with the improvement of product quality in the LED lighting market, the development trend and selection of LED driver power sources are receiving more and more attention. "In terms of product design, Mingwei Electronics will always put the performance and safety factors of the power supply first, using innovative design to improve product performance, and then reduce production costs through large-scale production." 
RGBW LED is kind of four color LED with 8 pins and it is a perfect substitute for 5050RGB LED.
Because of those advantage, RGBW LED widely used in LED brightening Project, LED decorative light, LED panle light and so on.
Mingwei Electronics: Bringing Linear Intelligence and Filament Light Drivers to the 2014 High-Tech LED Lighting Exhibition
[Text|High-tech LED reporter Gan Qin] From the high-profile LED industry event - the pace of 2014 Gaogong LED Lighting Exhibition is getting closer. Recently, Gaogong LED reporter learned from Zhao Chunbo, director of Mingwei Electronics Marketing Department, that the company will bring the linear intelligent lighting solution and the filament lamp driving scheme to the high-tech LED lighting exhibition.