导致LED频闪的LED驱动器输出电压纹波的计算

Calculation of Output Voltage Ripple because LED Flick Frequency in LED Driver

对中小功率LED驱动器电路进行了理论上的等效，遵循电感的电流不能突变和电容的电压不能突变的原则，从电容充放电电流的观点出发推导出了中小功率LED驱动器输出电压纹波的计算公式。通过计算公式从理论上找出了减小导致LED频闪的LED驱动器输出电压纹波的有效方法，为解决LED频闪问题奠定了理论基础。

Small and medium-power LED driver circuit is equivalent in theory ,following the principle of of inductor current and capactitance voltage can not be mutated ,from the capactier charge and discharge current views ,the formula of small and medium-power LED driver output voltage ripple is exported .By calculation formula to find an effective method to reduce LED strobe of LED driver output voltage ripple is finded,a theortical foundation to the solution of LED strobe problem is given.