Efficient voltage feed-forward algorithms for switched mode power supplies

We present a number of approximation algorithms for voltage feedforward compensation of Switch Mode Power Supplies. The complexity of the algorithms differs, as well as their ability to suppress input voltage transients. The compensation is attained by manipulating the integral part of the feedback control law reducing the computation requirements and makes it suitable for firmware realization in standard Digital Pulse Width Modulation Integrated Circuits or as resource and power efficient implementations in ASICs.