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參數(shù)資料
| 型號： | VI-ARM-C12 |
| 廠商： | Vicor Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Autoranging Rectifier Modules Up to 1500 Watts |
| 中文描述： | 自動調(diào)節(jié)整流模塊功率高達(dá)1500 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 302K |
| 代理商： | VI-ARM-C12 |
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
ARM, Autoranging Rectifier Module
Rev. 2.4
Page 7 of 12
Set your site on VICOR at www.vicorpower.com
Application Note, continued
+In
Gate In (PC)
Gate Out (PR)
–In
N
ST
L
+V
BOK
EN
–V
Vico
DC-D
Conver
Micro-
controller
15Vdc
150k
To additional modules
Figure 9—Enable (EN) function; See Fig.8 for details
+In
Gate In (PC)
Gate Out (PR)
–In
N
ST
L
+V
BOK
EN
–V
D
Co
Micro-
controller
15Vdc
27k
+5 Vdc
Secondary
referenced
To additional modules
Figure 10—Bus OK (B OK) isolated power status indicator
N
ST
L
C2
R4
C4
L2/N
L1
GND
L1
R3
L2
R1
R2
L3
C1
C3
F1
Z1
Part
C1
C2, C3
C4
F1
L1, L2
L3
R1, R2
R3
R4
Z1
Description
1.0F
4700pF
0.15F
12A fuse
27H
1.3mH
10
150k, 0.5W
2.2
MOV
Vicor
Part Number
02573
01000
03269
05147
14563
15016
00127-1503
03040
Figure 11—Filter connections
Bus-OK (B OK) Pin. (See Fig. 10). The Bus-OK pin is
intended to provide early-warning power fail information
and is also referenced to the negative output pin.
Caution: There is no input to output isolation in the ARM.
It is necessary to monitor Bus-OK via an optoisolator if it is to
be used on the secondary (output) side of the converters. A line
isolation transformer should be used when performing scope
measurements. Scope probes should never be applied
simultaneously to the input and output as this will destroy the unit.
Filter. Two input filter recommendations are shown for low
power VI-ARM-1 and high power VI-ARM-2 (See Fig. 11).
Both filter configurations provide sufficient common mode and
differential mode insertion loss in the frequency range between
100kHz and 30MHz to comply with the Level B conducted
emissions limit.
Hold-up Capacitors. Hold-up capacitor values should be
determined according to output bus voltage ripple, power fail
hold-up time, and ride-through time. (See Fig. 12). Many
applications require the power supply to maintain output
regulation during a momentary power failure of specified
duration, i.e., the converters must hold-up or ride-through such
an event while maintaining undisturbed output voltage
regulation. Similarly, many of these same systems require
notification of an impending power failure in order to allow time
to perform an orderly shutdown.
The energy stored on a capacitor which has been charged to
voltage V is:
ε = 1/2(CV2)
(1)
Where:
ε = stored energy
C = capacitance
V= voltage across the capacitor
Energy is given up by the capacitors as they are discharged by
the converters. The energy expended (the power-time product)
is:
ε = Pt = C(V
1
2–V
2
2) / 2
(2)
Where:
P = operating power
t = discharge interval
V1 = capacitor voltage at the beginning of t
V2 = capacitor voltage at the end of t
Rearranging equation 2 to solve for the required capacitance:
C = 2P
t / (V1
2–V
2
2)
(3)
Part
L1,L4
L2, L3
C1
C2,C3,C4,C5
C6
R1
R2
F1
Z1
Description
1000H 12A/6.5M
22H
.68f (x type)
4700pf
.22f (x type)
390k 1/2 W
10 1/2 W
17A/250V
MOV
03040
Vicor
Part Number
02134
11479
02573
03285
04068
C2
4700pF
C4
4700pF
R1
C3
4700pF
C5
4700pF
C6
.22F
(X2)
L4
L2
L1
L3
R2
10
1/2W
C1
390K
1/2W
L1
L2/N
GND
F1
N
ST
L
Z1
High power filter connections
Low power filter connections
Vicor
DC-DC
Converter
Vicor
DC-DC
Converter
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