Non-isolation chips, which are opposite to isolated circuits, have always played an important role in LED lighting applications. Compared to isolated products, they have higher conversion efficiency and lower system cost. The small footprint and thus a large number of applications have gradually become mainstream solutions.
The brand of Delip Optoelectronics sees the JW-FG20W series for high-performance non-isolated LED fluorescent lighting driver applications. This series of drives is a built-in 4 amp (4N60) high-voltage MOS tube drive circuit, which can detect and control the real output current in real time, and output current changes in the wide range of 95-265V input voltage, output voltage and peripheral inductance. Very small, and the addition of negative temperature coefficient control, can effectively reduce the attenuation of the light source.
In addition, the chip integrates various protection functions, including output open circuit protection, output short circuit protection, cycle-by-cycle overcurrent protection, over temperature protection and VCC overvoltage protection. Among them, the LED short-circuit protection can make the chip in the abnormal situation of output short-circuit, can obtain very low output short-circuit protection power consumption (short-circuit power consumption <0.5W at 18W), to avoid damage to the circuit and peripheral components.
Model: JW-FR20W
Input voltage: AC95-265V
Power: 6-20W (If the structure of the lamp body is not good, it is recommended to use EFD15 transformer)
Output current: 80-240MA
Output voltage: 40-80V
Conversion efficiency: 88%
Power factor: 0.97
Mechanical size: L100*W16*H10mm
Protection functions: open circuit protection, output short circuit protection, cycle-by-cycle overcurrent protection, intelligent temperature control protection and VCC overvoltage protection.
Market price: RMB 5.00
LED fluorescent lamps are not new development products, but the high price compared with traditional fluorescent lamps is an important factor that has been delayed in popularization. No matter the light source, structure or drive, it is a fast way for enterprises to reduce costs or indirectly reduce costs. At present, the product design has shipped a total of 200,000 PCS, and the market price is 5.00 yuan / PCS (untaxed). With the optimization and popularization of insulating and heat dissipating materials, the non-isolated driving counter-isolated driving scheme is the trend of the times. The practical significance of higher conversion efficiency, in addition to reducing energy consumption, improves the efficiency of LED lamp bead use, reduces costs, and brings consumer power to consumers.
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