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VI-ARM-H22 参数 Datasheet PDF下载

VI-ARM-H22图片预览
型号: VI-ARM-H22
PDF下载: 下载PDF文件 查看货源
内容描述: 自动调节整流模块高达1500瓦 [Autoranging Rectifier Modules Up to 1500 Watts]
分类和应用:
文件页数/大小: 12 页 / 302 K
品牌: VICOR [ VICOR CORPORATION ]
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Application Note, continued  
Off-Line Power Supply Configuration  
Enable (EN) Pin. (See Fig. 9). 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 unbypassed 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 15V through a 150kresistor.  
The ARM maintains the DC output bus voltage between 200  
and 375Vdc over the entire universal input range, which is  
compatible with Vicor VI-260 series and VI-J60 series DC-DC  
converters, as well as next-generation 300V 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 ARM 1 is rated at 500W in the  
low range (90-132Vac input), and 750W in the high range  
A signal diode should be placed close to and in series with the  
Gate-In pin of each converter to eliminate the possibility of  
control interference between converters. The Enable pin  
switches to the high state (15V) 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 400Vdc. 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 gas tubes fire. The thermistor bypass switch  
also opens if a fault or overload reduces the bus voltage to less  
than 180Vdc.  
(180-264Vac input). The ARM 2 is rated for 1000W and  
1500W 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.  
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. 8)  
for proper (autoranging) operation. Gas tubes across the  
capacitors provide input transient protection. The bleeder  
resistors (R1, R2, Fig. 8) discharge the holdup capacitors when  
power is switched off.  
Holdup Box (HUB)  
C3  
820µF HUB820-S, 2200µF HUB2200-S  
1200µF HUB1200-S, 2700µF HUB2700-S  
1800µF HUB1800-S, 3300µF HUB3300-S  
F1  
R1 C1  
+In  
N
+V  
C10  
V1  
V2  
Gate In (PC)  
C7*  
C8*  
BOK  
EN  
Vicor DC-DC  
Converter  
Filter  
VI-ARM  
Z1  
ST  
L
D3  
Gate Out (PR)  
–V  
–In  
R2 C2  
Vicor  
R3  
C4  
C5  
Part  
Description  
Holdup capacitors  
4700pF  
Part Number  
see text  
01000  
C1,2  
C3–6  
R1,2  
V1,2  
F1,2  
D1,2  
150k, 0.5W  
220V MOV  
3A, PC Tron  
Diode  
00127-1503  
13755  
D1  
D2  
02178  
F2  
00670  
+In  
*
C7,8  
Z1  
Film Cap., 0.8µf  
MOV  
C11  
Gate In (PC)  
03040  
26108  
Vicor DC-DC  
Converter  
D3,D4  
C10,C11  
R3  
1N5817  
0.001µF  
D4  
Gate Out (PR)  
500  
Sizing PCB traces:  
–In  
All traces shown in bold carry significant  
current and should be sized accordingly.  
VI-ARM- _12  
N/ST/L 10A rms at 90Vac and 500W  
C6  
+/– In  
4A DC at 190Vdc and 750W  
*
VI-ARM- _22  
N/ST/L 20A rms at 90Vac and 1000W  
To additional modules  
+/– In  
8A DC at 190Vdc and 1500W  
Required if C1 & C2 are located more than  
6 inches from output of VI-ARM.  
Figure 8—Converter connections  
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715  
ARM, Autoranging Rectifier Module  
Rev. 2.4  
Page 6 of 12  
Set your site on VICOR at www.vicorpower.com