See my power supply 5 yuan high cost performance full voltage high power factor non isolation tube drive

At this stage, LED fluorescent lamp is still one of the largest consumer demand market, the current mainstream drive there are isolated and non isolated type two, which is the most common type of non isolated back loading. Because of the large difference between the output voltage and the output voltage of the power grid, the most suitable way is to reduce the power loss by means of flyback isolation. However, the isolation circuit structure is complex, many devices, high cost, low efficiency, coupled with the different standards of each lamp has led to the bulk of the bulk of the application has not been non isolation. Non isolation circuit relative isolation circuit (non-isolation) chip has always played an important role in LED lighting applications, compared to the isolated products, it has high conversion efficiency and low cost in system architecture, so as to get the small board space accounted for a large number of applications, it has gradually become a mainstream solution.

De power's brand see my power supply for high performance non isolation LED fluorescent light driven applications launched the JW-FG20W*** series. The driver belongs to the built-in 4 amps (4N60) driving circuit of the high voltage MOS transistor, the output current can be real-time detection and control of the real cycle, 95-265V in a wide range of input voltage and output voltage output current changes and the change of external inductance is very small, and the addition of negative temperature coefficient control, can effectively reduce the light attenuation. In addition, the chip integrates a variety of protection functions, including open circuit protection, output short circuit protection, cycle by cycle overcurrent protection, over temperature protection and VCC overvoltage protection, etc.. One of the LED short-circuit protection can make the chip in the case of abnormal output short-circuit, can get very low output short circuit protection power consumption (18W short circuit power consumption)