SYSTEMS AND METHODS FOR ENHANCING SYSTEM HOLD UP TIME USING REVERSE CHARGING OF POWER SUPPLY UNIT

摘要

An information handling system may include at least one information handling resource and a power supply unit having a bulk capacitor for storing charge. The power supply unit may be configured to convert an alternating current waveform received at an input of the power supply unit from an input source into a direct current voltage for delivering electrical energy to a power bus for providing electrical energy to the at least one information handling resource. Responsive to a loss of the input source, the power supply unit may charge the bulk capacitor from electrical energy present on the power bus and generated by at least one other power supply unit coupled to the power bus. Responsive to an indication of a failure of the at least one other power supply unit, the power supply unit may discharge the bulk capacitor to the power bus.