LED lighting driving circuit design based on SM7530 chip

First, SM7530 Introduction The SM7530 uses patented constant current control technology, and the input does not require an electrolytic capacitance. Suitable for 85VAC ~ 265VAC full range input voltage, constant current accuracy can reach ± ​​5%, PF value is greater than 0.9, with output open, short circuit protection characteristics. The typical scheme is as follows: Solution schematic Second, a typical solution 2.1 36V / 1A scheme Positive map of the power board Rear view of the power board 2.2 36V / 1A Typical Test Data <1> System basic electrical parameters and reliability test <2> System reliability test Third, small knot After years of technical accumulation and precipitation, Ming Microelectronics launched a high-power series drive chip SM733X, SM753X series on the basis of chip, SM7307, and other chips. The SM753X series is high-power factor isolation LED lighting drivers, including external-drive MOSFET SM7530, built-in MOS SM7532 / SM7534, etc., can be widely used in ceiling lamps, flat lamps, T5, T8 sunglan, and isolate power. Source: Big Bit, Read more

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