TM PRM Regulator for Post PFC Operation P RM48Jy480x500A00 S C NRTL US High Efficiency Converter Features Product Ratings V = 45.0 V to 55.0 V P = 500 W IN OUT Optimized for Post PFC operation with = 48.0 V V OUT 48 V holdup capacitance I = 10.42 A OUT (20.0 V to 55.0 V Trim) 48.0 V nominal input non-isolated ZVS buck-boost regulator Transient operation down to 30.0 V for extended holdup during line dropout 20.0 V to 55.0 V adjustable output range 2 500 W output power in 1.11 in footprint Product Description 97.8% typical efficiency, at full load TM 3 3 The VI Chip PRM Regulator is a high efficiency converter, 1729 W/in (106 W/cm ) Power Density operating from a 45.0 to 55.0 Vdc input to generate a regulated 4.01 MHrs MTBF (MIL-HDBK-217 Plus Parts Count) 20.0 to 55.0 Vdc output. The ZVS buck-boost topology enables Pin selectable operating mode high switching frequency (~1 .03 MHz) operation with high Adaptive Loop size of reactive components enabling power density up to Remote Sense / Child Operation 3 1729 W/in . Full VI Chip Package The Full VI Chip package is compatible with standard pick- 32.5mm x 22.0mm x 6.73mm and-place and surface mount assembly processes with a planar Optimized for use with PFM based thermal interface area and superior thermal conductivity. Isolated AC-48 V DC Converters In a Factorized Power Architecture system, the PRM and downstream VTM current multiplier minimize distribution and conversion losses in a high power solution, providing an Typical Applications isolated, regulated output voltage. The P RM48Jy480x500A00 has two selectable modes of High Density Power Supply AC-DC rail outputs regulation depending on the application requirements. High Density ATE system AC-DC power In Adaptive Loop Operation, the PRM48Jy480x500A00 utilizes a unique feed-forward scheme that enables precise regulation Telecom NPU and ASIC core power of an isolated POL voltage without the need for remote sensing Communications Systems and voltage feedback. Non-isolated and isolated power converters In Remote Sense Operation, the internal regulation circuitry is disabled, and an external control loop and current sensor voltage and current compensation loops to optimize performance in the end application. PRM Regulator Rev 1.3 Page 1 of 46 09/2020 PRM48Jy480x500A00 Typical Applications PRM ENABLE VAUX REF/ TRIM REF EN R TRIM AL VT SHARE/ VC AC Front End CONTROL NODE SGND IFB GND PRI GND 48 VDC FUSE V OUT AC (L) +OUT +IN +OUT 20 V to 55 V + AC C C MOV IN OUT V IN AC (N) OUT IN OUT SGND SEC GND PRIMARY SECONDARY ISOLATION BOUNDRY HOLDUP CAPACITOR SGND Typical Application: AC-48 VDC Front End + PRM48Jy480x500A00 V REF SGND REF 3312 PRM SGND IN OUT Voltage Sense and Error Amplifier (Differential) GND ENABLE VAUX REF/ VTM TRIM REF EN SGND AL VT TM +OUT SGND Voltage Reference with Soft Start AC Front End SHARE/ VC VC CONTROL NODE VTM Start up Pulse V + V PC IFB GND VOUT C SGND OUT LOAD +IN IN PRI GND 48 VDC FUSE +IN AC (L) +OUT +IN +OUT L + F AC C MOV External Current Sense F V IN IN OUT OUT IN OUT AC (N) SGND 1 PRIMARY SECONDARY SEC GND SEC GND PRIMARY SECONDARY ISOLATION BOUNDRY ISOLATION BOUNDRY HOLDUP CAPACITOR SGND Typical Application: AC-48 VDC Front End + PRM48Jy480x500A00 + VTM, non-isolated Remote Sense Configuration 1 Non-Isolated Conguration: Out connected to -IN PRM Regulator Rev 1.3 Page 2 of 46 09/2020 Voltage Sense