MODULES PRM Series 1 2 0 - 2 4 0 W D C / D C P R E - R E G U L AT O R M O D U L E P R E L I M I N A R Y Features • • • • • • • • ZVS buck / boost regulator. Small footprint: 1.1in2 (7.1cm2). Provides factorised bus for 48 Vin VTMs. Available in 24 and 48V models. J-Lead package. Efficiency: Up to 97%. Pick & place / SMD compatible. High density: Up to 875W/in3. Pre-Regulator Module (PRM) PRODUCT DESCRIPTION The V•I Chip Pre-Regulator Module (PRM) is a very efficient non-isolated regulator capable of both boosting and bucking a wide range input voltage. It is specifically designed to provide a controlled Factorized Bus distribution voltage for powering downstream V•I Chip Voltage Transformation Modules (VTMs)— fast, efficient, isolated low noise Point-of-Load (POL) converters. PRMs feature a unique "Adaptive Loop" compensation feedback: a single wire alternative to traditional remote sensing and feedback loops that enables precise control of an isolated POL voltage without the need for either a direct connection to the POL or for noise sensitive, bandwidth limiting, isolation devices in the feedback path. Part Numbering Application Examples 224