P048F048T24AL
P048F048M24AL
PRM
TM
Regulator
• 48 V input V•I Chip
TM
PRM
• Vin range 36 – 75 Vdc
• High density – 813 W/in
3
• Small footprint – 215 W/in
2
• Low weight – 0.5 oz (15 g)
• Adaptive Loop feedback
• ZVS buck-boost regulator
• 1.45 MHz switching frequency
• 96% Efficiency
• 125˚C operation (Tj)
Vin = 36 – 75 V
V
f
= 26 – 55 V
P
f
= 240 W
I
f
= 5 A
©
Product Description
The V
•
I Chip Pre-Regulator Module 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 —
fast, efficient, isolated, low noise Point-of-Load (POL)
converters. In combination, PRMs and VTMs
TM
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 (POL).
In FPA systems, the POL voltage is the product of the
Factorized Bus voltage delivered by the PRM and the
"K-factor" (the fixed voltage transformation ratio) of a
downstream VTM. The PRM controls the Factorized Bus
voltage to provide regulation at the POL. Because VTMs
perform true voltage division and current multiplication,
the Factorized Bus voltage may be set to a value that is
substantially higher than the bus voltages typically found in
"intermediate bus" systems, reducing distribution losses and
enabling use of narrower distribution bus traces. A PRM-VTM
chip set can provide up to 100 A or 230 W at a FPA system
density of 169 A/in
3
or 390 W/in
3
— and because the PRM
can be located, or "factorized," remotely from the POL, these
power densities can be effectively doubled.
The PRM described in this data sheet features 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 load
or for noise sensitive, bandwidth limiting, isolation devices
in the feedback path.
Absolute Maximum Ratings
Parameter
+In to -In
PC to -In
PR to -In
IL to -In
VC to -In
+Out to -Out
SC to -Out
VH to -Out
OS to -Out
CD to -Out
SG to -Out
Continuous output current
Continuous output power
Case temperature during reflow
Operating junction temperature
Storage temperature
Values
-1.0 to 85.0
-0.3 to 6.0
-0.3 to 9.0
-0.3 to 6.0
-0.3 to 18.0
-0.3 to 59
-0.3 to 3.0
-0.3 to 9.5
-0.3 to 9.0
-0.3 to 9.0
100
5
240
225
-55 to 125
-40 to 125
-65 to 125
-40 to 125
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mA
Adc
W
°C
°C
°C
°C
°C
Notes
MSL 5
M-Grade
T-Grade
M-Grade
T-Grade
DC-DC Converter
VC
PC
TM
IL
NC
PR
VH
SC
SG
OS
NC
CD
+Out
0.01
μ
F
R
OS
R
CD
10 kΩ
+In
PRM-AL
Factorized
Bus (V
f
)
0.4
μ
H
10
Ω
+In
+Out
TM
VC
PC
+Out
VTM
– Out
Vin
–In
–Out
– In
K
Ro
– Out
L
O
A
D
P048F048T24AL is used with 048 input series VTM to provide a regulated & isolated output.
vicorpower.com
800-735-6200
V•I Chip Pre-Regulator Module
P048F048T24AL
Rev. 3.4
Page 1 of 14
VICOR [ VICOR CORPORATION ]
