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Vicor
Vicor


P036F048T12AL

PRM Regulator


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P036F048T12AL pdf
PRM
PRMTM
Regulator
• 36 V input V•I ChipTM PRM
• Vin range 18 – 60 Vdc
• High density – 407 W/in3
• Small footprint – 1.1 in2
• Low weight – 0.5 oz (15 g)
• Adaptive Loop feedback
• ZVS buck-boost regulator
• 1.35 MHz switching frequency
• 95% Efficiency
• 125˚C operation (Tj)
P 0 3 6 F 0 4 8 T 1 2 A Lwww.DataSheet4U.com
©
Vin = 18 – 60 Vdc
Vf = 26 – 55 Vdc
Pf = 120 W
If = 2.5 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 VTMsTM 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 115 W at a FPA system density of
169 A/in3, or 195 W/in3 — 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
2.5
120
225
-40 to 125
-40 to 125
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mA
Adc
W
°C
°C
°C
Notes
MSL 5
T-Grade
T-Grade
DC-DC Converter
Vin
VC VH
PC SC
TM SG
IL OS
NC NC
PR PRM-AL CD
+In +Out
–In –Out
Factorized
Bus (Vf)
+Out
+In
-Out
TM VTM
VC
PC
+Out
K
Ro-In
-Out
Vout
The P036F048T12AL is used with any 048 input series VTM to provide a regulated and
isolated output.
vicorpower.com 800-735-6200
V•I Chip Pre-Regulator Module
P036F048T12AL
Rev. 1.5
Page 1 of 14



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P036F048T12AL pdf
General Specifications
Part Numbering
P 036
F
048
T
V•I CwhiwpwP.rDea-tRaSehgeuetla4Uto.cromModule
12 AL
Pre-Regulator
Module
Input Voltage
Designator
Configuration
F = J-lead
T = Through hole
Nominal
Factorized Bus
Voltage
Product Grade Temperatures (°C)
Grade Storage Operating (TJ)
T -40 to125 -40 to125
Output Power
Designator
(=Pf /10)
AL = Adaptive Loop
Overview of Adaptive Loop Compensation
Adaptive Loop compensation, illustrated in Figure 1, contributes to the
bandwidth and speed advantage of Factorized Power. The PRM
monitors its output current and automatically adjusts its output voltage
to compensate for the voltage drop in the output resistance of the
VTM. ROS sets the desired value of the VTM output voltage, Vout; RCD
is set to a value that compensates for the output resistance of the VTM
(which, ideally, is located at the point of load). For selection of ROS and
RCD, refer to Table 1 below or Page 9.
The V•I Chip’s bi-directional VC port :
1. Provides a wake up signal from the PRM to the VTM that
synchronizes the rise of the VTM output voltage to that of the PRM.
2. Provides feedback from the VTM to the PRM to enable the PRM to
compensate for the voltage drop in VTM output resistance, RO.
Vo = VL ± 1.0%
VC VH
PC SC
+Out
TM SG
IL OS
LNC NC
OPR PRM-AL CD
+In +Out
ROS
RCD
Factorized
Bus (Vf)
+In
-Out
TM
VC
VTM
PC
DAVin
Vf =
VL
K
+
(Io•Ro)
K
+Out
K
–In –Out
Ro-In
-Out
Figure 1 — With Adaptive Loop control, the output of the VTM is regulated over the load current range with only a single interconnect between the PRM and
VTM and without the need for isolation in the feedback path.
Desired Load Voltage (Vdc)
1.0
1.2
1.5
1.8
2.0
3.0
3.3
5.0
8.0
9.6
10
12
15
24
28
36
48
VTM P/N(1)
V048F015T100
V048F015T100
V048F015T100
V048F020T080
V048F020T080
V048F030T070
V048F040T050
V048F060T040
V048F080T030
V048F096T025
V048F120T025
V048F120T025
V048F160T015
V048F240T012
V048F320T009
V048F480T006
V048F480T006
Max VTM Output Current (A)(2)
100
100
100
80
80
70
50
40
30
25
25
25
15
12.5
9.4
6.3
6.3
Note:
(1) See Table 2 on page 9 for nominal Vout range and K factors.
(2) See “PRM output power vs. VTM output power” on Page 10
(3) 1% precision resistors recommended
Table 1 — Configure your Chip Set using the PRM-AL
ROS (kΩ)(3)
3.57
2.94
2.37
2.61
2.37
2.37
2.89
2.87
2.37
2.37
2.86
2.37
2.49
2.37
2.74
3.16
2.37
RCD (Ω)(3)
26.1
32.4
39.2
35.7
39.2
39.2
32.6
33.2
32.9
32.9
32.9
39.2
37.4
39.2
35.7
30.1
39.2
vicorpower.com 800-735-6200
V•I Chip Pre-Regulator Module
P036F048T12AL
Rev. 1.5
Page 2 of 14



Part Number P036F048T12AL
Description PRM Regulator
Maker Vicor - Vicor
Total Page 14 Pages
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