Power supply unit (PSU) right-sizing that supports power transients, with mechanism for dynamic curtailment of power transients during a PSU failure

摘要

A power controller of an information handling system (IHS) controls power allocation for the IHS with components that intermittently exhibit power transients. The power controller is configured to: identify an enhanced power state during which a maximum power required by the information handling system is greater than the amount of power provided by a primary PSU of a redundant configuration of PSUs; and allocate a portion of the unused operating margin of backup reserve power from the redundant PSUs to support intermittent power transients that occur during enhanced power state operation. The power controller is further configured to, in response to a detection of a condition that reduces an amount of unused operating margin of backup reserve power to less than an amount of additional power required to support the intermittent power transients, autonomously disable/limit the enhanced power state to prevent/limit an occurrence or magnitude of the intermittent power transients.