Silan launch of the new generation of non-isolated LED lighting driver IC SD6900

Silan Microelectronics Co., the company recently introduced a new generation of dedicated non-isolated LED lighting driver controller chip SD6900. The chip built APFC, collecting the output current directly through the closed-loop feedback control with high PFC, high-precision constant current and high conversion efficiency, and can be widely used Bulb T5/T8 LED lamps and other kinds of LED lighting applications.

Relative to the current applied to the LED lighting of the first generation (PPFC + peak sample) and second generation (APFC + peak sample) non-isolated driver program, SD6900 has the following innovations:

1 has a very good current consistency, using patented technology MICROELECTRONICS the constant current control mode, the direct acquisition of the output current, and to control the current through the error amplifier, and consistency can be within ± 3%.

2 chip can do not only the the narrow voltage, wide voltage can do. SD6900 uses unique constant current control mode, the input voltage can vary from 90V ~ 265V, output current variation of less than ± 1%. A machine that can solve the two specifications of power.

The floating 3 chip technology, and use Silan Microelectronics auxiliary winding supply technology, powered through the inductor tap, can effectively reduce the cost and reduce the transformer.

In addition to the above features, SD6900 comes with PFC control function, can automatically achieve high PF value of the full voltage range (voltage input range PF> 0.9). In the same time, the chip trough opening mode, this mode can be reduced switching losses, improve the efficiency of system conversion, the conversion efficiency is higher than 93% in 18W Application.

In addition, the chip integrates various protection functions, including output open-circuit protection, output short circuit protection, cycle-by-cycle over current protection, over temperature protection and VCC OVP. LED short-circuit protection using Silan proprietary technology, the patented technology allows the chip in the unusual case of output short circuit occurs, it is possible to get very low output short circuit protection power consumption (18W under short-circuit power consumption <0.5W) avoid damage to the circuit and peripheral components. SD6900 chip based on independent research and development of Silan Microelectronics BiCMOS process, SOT-23 package, high integration, small external components, to facilitate the overall debugging prominent feature.

Non-isolated solutions, the the Silan follow-up will also introduce a series of driver chips, mainly in the following varieties:

1 SD6901/02/03 integrated APFC, built-the MOS (Swaziland brand), to meet the demand for 3 ~ 30W power range;

2 SDH6904 built-in high-voltage start function, to meet the the 0.2S following start-up time requirements;

3 SD6910 is a non-isolated driver chip integration APFC, step-up/down mode, to meet the requirements of high output voltage.