典型应用ISEN脚直接连接到Q1的D脚,它如何限制电流呢?假如我需要限制5A输出,ISEN脚要如何设计?
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hi
电流保护见datasheet第12页公式8: CL = 40µA x RADJ/RDS(ON)
CL计算可以参考设计案例,见datasheet 第18页公式19.
Hi Johnsin Tao:
RADJ=1.2K;Rsense=5mR;那CL等于多少?谢谢!
HI
CL = 32µA x RADJ/RDS(ON)=32uA*1.2kohm/5mohn=7.68A. 7.68A是最大电感峰值电流2,为输出电流+电感纹波电流/2/
Datasheet上有计算案例,建议你参考。