1. A welding power supply system comprising: a plurality of hysteretic buck converters coupled in parallel and configured to receive a common input and to provide combined output power to a common load based upon the common input, wherein each hysteretic buck converter comprises a high comparator configured to produce a high comparator output and a low comparator configured to produce a low comparator output, and each hysteretic buck converter is configured to provide an output current based at least in part on the respective high comparator output and the respective low comparator output.