I want to rectify my input voltage from AC to DC in the range of 90 vin min to 270 vin max. I was thinking about a buck converter design due to the efficiency however I cannot find one that can take my vin min and vin max. The output voltage desired is 112V DC.

I want my operational current between the range of 15-25 mA DC. My load is resistive. And the input voltage is so large because of the operational conditions I want it to be able to perform at.

Please anyone give me some ideas on what i can do to build this circuit using as least components as possible.