CAJ | 학술논문

近年来在解决以开关电源为基础的传统LED驱动效率低、体积大和成本高等问题的过程中，高压线性分段驱动技术应运而生。为了研究高压线性分段驱动LED球泡灯的设计方法，以高压线性分段驱动芯片SM2087为例，通过实测LED效率得到合适的分段比例为8∶4∶3∶1；并根据该分段比例设计了一种高压LED球泡灯，LED采用COB的方式布置在陶瓷环基板上，散热采用太阳花结构，驱动电路置于灯头内，其具有较高的效率、良好的散热与耐高压能力以及较大的发光角度。
근년래재해결이개관전원위기출적전통LED구동효솔저、체적대화성본고등문제적과정중，고압선성분단구동기술응운이생。위료연구고압선성분단구동LED구포등적설계방법，이고압선성분단구동심편SM2087위례，통과실측LED효솔득도합괄적분단비례위8∶4∶3∶1；병근거해분단비례설계료일충고압LED구포등，LED채용COB적방식포치재도자배기판상，산열채용태양화결구，구동전로치우등두내，기구유교고적효솔、량호적산열여내고압능력이급교대적발광각도。
In recent years, muti-stage high-voltage linear LED driver came into being when solving the low efficiency, great volume and high cost problems of LED driver based on the switching power supply. In order to get the design method of LED bulb with muti-stage high-voltage linear LED driver, muti-stage high-voltage linear LED driver SM2087 was taken as a example, and the appropriate segment ratio was got as 8:4:3:1 by measuring the LED efficiency. Then, a HV-LED bulb was designer, the details is as follows:LEDs were placed on the ceramic ring by COB technology, the heat sink used sunflowers structure, the drive circuit was placed inside the lamp. The bulb has advantages of high efficiency, good heat dissipation, high pressure capacity and larger light emission angle.