An electronic rack includes a plurality of information technology (IT) components arranged in a stack, and a rack power supply having a voltage converter and a voltage regulator. The rack power supply to receive an input voltage from a power source, where the voltage converter is to convert the input voltage into an intermediate voltage, where the voltage regulator is to regulate the intermediate voltage to generate a regulated voltage to be supplied to the plurality of the IT components. Each electronic rack includes a fan system having one or more fan units coupled to the rack power supply to provide cooling air to reduce an operating temperature of the IT components, where each of the fan units is to receive the intermediate voltage without going through the voltage regulator and to provide power to a fan of the fan unit.