Core voltages in FPGAs have quickly dropped to lower voltages in current technologies. There is a lack of good information about power supplies that can provide not just the required level of performance, but the optimal level of performance. One design choice is point-of-load (POL) power supplies.

There is some confusion about the benefits to be gained by using point-of-load (POL) supplies. The speed of response of these POL converters directly affects power distribution system (PDS) design choices. This article will describe a basic method for designing a PDS and review the birth of the POL converter and Bellnix’s highspeed response POL converter.