MPRM48NH480M250A00 Datasheet, PDF (1/44 Pages) Vicor Corporation – High Efficiency Converter

MIL-COTS PRM^TM Regulator
for MIL-STD 704E/F Applications
MPRM48NH480M250A00
Features
• Optimized for operation with MIL-COTS
BCM^® in 270 VDC Applications
• MIL-STD-704E/F compliant when used with
MBCM270x450M270A00
• 48.0 V nominal input non-isolated
ZVS buck-boost regulator
• Input Transient operation between 30.0 V and 60.0 V
• 20.0 V to 55.0 V adjustable output range
• 250 W output power in 0.57 in² footprint
• 96.7% typical efficiency, at full load
• 1676 W/in³ (102 W/cm³) Power Density
• 5.29 MHrs MTBF (MIL-HDBK-217 Plus Parts Count)
• Pin selectable operating mode
Adaptive Loop
Remote Sense / Slave
• Half VI Chip^® Package
22.0mm x 16.5mm x 6.73mm
Typical Applications
• High Voltage 270 V Aircraft Distributed Power
• High Density Power Supplies
• Communication Systems
High Efficiency Converter
Product Ratings
V_IN = 38.0 V to 55.0 V
(30.0 V to 60.0 V for up to 150 ms)
P_OUT = 250 W
V_OUT = 48.0 V
(20.0 V to 55.0 V Trim)
I_OUT = 5.21 A
Product Description
The VI Chip® PRM^TM Regulator is a high e ciency converter,
operating from a 38.0 to 55.0 Vdc input to generate a regulated
20.0 to 55.0 Vdc output. The ZVS buck-boost topology enables
high switching frequency (~1.03 MHz) operation with high
conversion e ciency. High switching frequency reduces the
size of reactive components enabling power density up to
1676 W/in³.
The Half VI Chip package is compatible with standard pick-and-
place and surface mount assembly processes with a planar
thermal interface area and superior thermal conductivity.
The MPRM48NH480M250A00 is optimized for operation with
MIL-COTs BCMs in MIL-STD-704 E/F 270 VDC systems. In a
270 VDC system, the upstream BCM provides an interface and
isolation between the high voltage DC bus and the PRM,
converting the input down by a fixed ratio.
The downstream PRM and VTM^TM current multiplier minimize
distribution and conversion losses in a high power solution,
providing an isolated, regulated output voltage.
The MPRM48NH480M250A00 has two selectable modes of
regulation depending on the application requirements.
In Adaptive Loop Operation, the MPRM48NH480M250A00
utilizes a unique feed-forward scheme that enables precise
regulation of an isolated POL voltage without the need for
remote sensing and voltage feedback.
In Remote Sense Operation, the internal regulation circuitry is
disabled, and an external control loop and current sensor
maintain regulation. This a ords flexibility in the design of both
voltage and current compensation loops to optimize
performance in the end application.
MIL-COTS PRM^TM Regulator
Page 1 of 44
Rev 1.1
09/2015
vicorpower.com
800 927.9474