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| 型号： | VI-ARMB-C21 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 750 W AC-DC UNREG PWR SUPPLY MODULE |
| 文件页数： | 8/11页 |
| 文件大小： | 705K |
| 代理商： | VI-ARMB-C21 |
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
ARM, Autoranging Rectifier Module
Rev. 3.9
Page 6 of 11
Set your site on VICOR at vicorpower.com
Figure 10 — Converter connections
+IN
PC (GATE IN)
PR
–IN
+IN
PC (GATE IN)
PR
–IN
N
ST
L
+V
BOK
EN
–V
Vicor DC-DC
Converter
VI-ARM
R1
R2
C1
C2
V1
V2
D2
D1
C3
C5
C4
C6
F1
F2
Vicor DC-DC
Converter
To additional modules
C7*
C8*
Part
C1,2
C3–6
R1,2
V1,2
F1,2
D1,2
C7,8
Z1
D3,D4
C10,C11
R3, R4**
F3
Vicor
Part Number
01000
00127-1503
20461-220
00670
06852
30076
26108
Sizing PCB traces:
All traces shown in bold carry significant
current and should be sized accordingly.
*Required if C1 & C2 are located more than
Z1
*
Filter
R3
C10
D3
C11
D4
N
L
PE
R4
F3
Use recommended fusing for
specific DC-DC Converter
ABC-10 A VI-ARM-_1
ABC-15 A VI-ARMB-_2
(Y2 type)
6 inches (15 cm) from output of VI-ARM.
**
Not used with VI-260/VI-J60
APPLICATION NOTE (CONT.)
Off-Line Power Supply Configuration
The ARM maintains the DC output bus voltage between 200
and 375 Vdc over the entire universal input range, this being
compatible with Vicor VI-260 series and VI-J60 series DC-DC
converters, as well as Vicors Maxi, Mini, Micro 300 V input
Vicor converters. The ARM automatically switches to the
proper rectification mode (doubled or undoubled) depending
on the input voltage, eliminating the possibility of damage due
to improper line connection. The VI-ARM-x1 is rated at 500 W
in the low range (90-132 Vac input), and 750 W in the high
range (180 – 264 Vac input). The VI-ARMB-x2 is rated for 750
W and 1500 W for the low and high input ranges respectively.
Either of these modules can serve as the AC front end for any
number and combination of compatible converters as long as
the maximum power rating is not exceeded. See VI-ARMB
derating curves. (Figures 1, and 2)
Strap (ST) Pin.
In addition to input and output power pin
connections, it is necessary to connect the Strap pin to the
junction of the series holdup capacitors (C1, C2, Fig. 10)
for proper (autoranging) operation. Varistors across the
capacitors provide input transient protection. The bleeder
resistors (R1, R2, Fig. 10) discharge the holdup capacitors
when power is switched off.
Enable (EN) Pin.
(See Fig. 11). The Enable pin must be
connected to the Gate-In or PC pin of all converter modules to
disable the converters during power-up. Otherwise, the
converters would attempt to start while the holdup capacitors
were being charged through an un-bypassed thermistor,
preventing the bus voltage from reaching the thermistor bypass
threshold thus disabling the power supply. The Enable output
(the drain of an N channel MOSFET) is internally pulled up to
15 V through a 150 k
Ω resistor.
A signal diode should be placed close to and in series with the
PC/Gate-In pin of each converter to eliminate the possibility of
control interference between converters. The Enable pin
switches to the high state (15 V) with respect to the negative
output power pin to turn on the converters after the power-up
inrush is over. The Enable function also provides input
overvoltage protection for the converters by turning off the
converters if the DC bus voltage exceeds 400 Vdc. The
thermistor bypass switch opens if this condition occurs,
placing the thermistor in series with the input voltage, which
reduces the bus voltage to a safe level while limiting input
current in case the varistors conduct. The thermistor bypass
switch also opens if a fault or overload reduces the bus voltage
to less than 180 Vdc.
CAUTION: There is no input to output isolation in the
ARM, hence the –Out of the ARM and thus the –In of the
downstream DC-DC converter(s) are at a high potential. If
it is necessary to provide an external enable / disable
function by controlling the DC-DC converter’s PC pin
(referenced to the –In) of the converter an opto-isolator or
isolated relay should be employed.
(Gate In)
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相关代理商/技术参数 |
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| VI-ARMB-C22 | 制造商:Vicor 功能描述:ARM ?? Autoranging Rectifier Module |
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