The present disclosure provides an apparatus and a method for implementing a USB-IF certified programmable power supply algorithm on a USB-C port. The method involves using a software code running on a microcontroller which monitors voltage and current being supplied by a power supply controller IC on a VBUS line of the USB-C port. Based on the detected voltage/current corrective actions are taken by the software code to bring the voltage/current to accepted levels as requested by a port partner. Further, a PPS accelerator is configured to compute an average or a new current/voltage value and provide the computed average or a new current/voltage value to a microcontroller for subsequent decision making and for other related assessment process.