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V048F120T025 Datasheet

  • V048F120T025

  • VI Chip - PRM-AL Pre-Regulator Module

  • 14頁

  • VICOR   VICOR

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PRELIMINARY
General Specifications
Part Numbering
V鈥 Chip Pre-Regulator Module
P
Pre-Regulator
Module
048
Input Voltage
Designator
F
Configuration
(Fig.21)
048
Nominal
Factorized Bus
Voltage
T
Product Grade Temperatures (擄C)
Grade
Storage Operating
T
-40 to150 -40 to125
M
-65 to150 -55 to125
24
Output Power
Designator
(=P
f
/10)
AL
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. R
OS
sets the desired value of the VTM
output voltage, Vout; R
CD
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 R
OS
and R
CD
, refer to Table 1 below
or Page 9.
The V鈥 Chip鈥檚 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, R
O
.
Vo = V
L
鹵
1.0%
VC
PC
TM
IL
NC
PR
VH
SC
SG
OS
NC
CD
R
OS
R
CD
+In
PRM-AL
Factorized
Bus (V
f
)
V
L
(Io鈥o)
V
f
=
+
K
K
+In
+Out
+Out
TM
VC
PC
VTM
K
Ro
-Out
+Out
Vin
鈥揑n
鈥揙ut
-In
L
O
A
D
-Out
Figure 1
鈥?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
3.3
5.0
10
12
15
24
28
36
48
VTM P/N
(1)
V048F015T100
V048F015T100
V048F015T100
V048F020T080
V048F020T080
V040F033T060
V048F060T040
V048F120T025
V048F120T025
V048F160T019
V048F240T012
V048F320T009
V048F480T006
V048F480T006
Max VTM Output Current (A)
(2)
100
100
100
80
80
60
40
25
25
18.8
12.5
9.4
6.3
6.3
R
OS
(k惟)
(3)
3.57
2.94
2.37
2.61
2.37
2.89
2.87
2.86
2.37
2.49
2.37
2.74
3.16
2.37
R
CD
(惟)
(3)
26.1
32.4
39.2
35.7
39.2
32.6
33.2
32.9
39.2
37.4
39.2
35.7
30.1
39.2
Note:
(1) See Table 2 on page 9 for nominal Vout range and K factors.
(2) See 鈥淧RM output power vs. VTM output power鈥?on Page 10
(3) 1% precision resistors recommended
Table 1
鈥?Configure your Chip Set using the PRM-AL
vicorpower.com
800-735-6200
V鈥 Chip Pre-Regulator Module
P048F048T24AL
Rev. 1.7
Page 2 of 14

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