The appropriate switching frequency for your LED
Which switching frequency we should choose?
The led switching frequency bears directly on led. As such, requirements must be considered from this two-fold vantage point,
- Viewed from the noise point，Keep your lowest switching frequency as far from these 20K as possible.
switching frequency of low-intensity noise can be resolved .when the lowest switching frequency has been below 25-30K.
- From a EMI perspective, The highest switching frequency should not be setup to the 150K .the point are stand at the threshold of EMI drop

A high quality of DC regulator can be obtained by adjusting the switching frequency in a modest variety.