Looking for buck converter with duty cycle that can be almost 100%

Hello. I’m looking at some of your buck converters that have Vin ranges from 5-20V and output 5A+. It looks like there are a lot of great options. However, I see most of them have a maximum duty cycle limit in the 80-90% range, based on the minimum off time of the datasheets. Do you have any buck converters with my input voltage range and output current spec that can reach duty cycles of 95% or greater? My output voltage can essentially range from 2V to ~Vin.


Hello rob1,

With those requirements, you may be better off using a Buck Controller. One such device is the MP2918.

Thank you,
Vinh Tran
Field Applications Engineer

We have such Buck converters with 100% duty cycle from our industrial and auto product line. For example MPQ4315