About input line frequency

[jim2010]

Hi, Everyone:
I got a new project that asks me to design a SMPS. The specifications is not strict,but its input line frenquency should be 50/60/400Hz. I checked lots of chips and examples of circuits, their input frequency always are 50/60Hz. I hope to know how to match this requirement in my design.

Best regards

Jim

 

[Tahmid]

Hi jim2010,
If the SMPS is to be one that takes line voltage and steps it down to 12v or something DC, the input line frequency shouldn't be much of a factor, as you need to convert the line voltage to DC for SMPS anyways and 50,60 or 400Hz will make no difference when converted to DC.

Hope this helps.
Tahmid.