Vicor Introduces New 320W VI Chip PRM Regulator
Vicor Corp. has introduced a high power (>1100 W/in3) 320W PRM™ non-isolated regulator. Designated P045F048T32AL, the latest VI Chip™ component is designed for high-performance 48V power applications such as servers, telecom and ATE. This PRM provides a controlled Factorized Bus distribution voltage for powering downstream VTM™ current multipliers, creating fast, efficient, isolated, low-noise Point-of-Load (POL) converters. With an efficiency of 97% and matched with a 94% VTM unit, it enables direct 48V-to-load with 91% efficiency, eliminating the need for an intermediate 12V bus conversion stage and VRMs.
In combination, PRMs and VTMs are intended to form a complete dc-dc converter subsystem offering all of the unique benefits of Vicor’s Factorized Power Architecture (FPA™): high density and efficiency, low-noise operation, architectural flexibility, extremely fast transient response, and elimination of bulk capacitance at the point of load. A PRM+V™ chip set provides up to 100A or 300W for a 48V-direct-to-load density of over 500W/in3. Alternatively, the PRM regulator may be used independently if isolation is not required.
The P045F048T32AL features unique Adaptive Loop compensation feedback. This single-wire alternative to traditional remote sensing and feedback loops enables precise control of an isolated POL voltage without the need for either a direct connection to the load or for noise-sensitive, bandwidth-limiting, isolation devices in the feedback path.
A 320 W PRM+V™ chip set to convert from 48V direct to 1V is available for $53 in OEM quantities.
