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参数资料
| 型号： | FARM1CF2 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 500 W AC-DC UNREG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-9 |
| 文件页数： | 8/11页 |
| 文件大小： | 633K |
| 代理商： | FARM1CF2 |
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Rev. 6.0
Page 6 of 11
Set your site on VICOR at vicorpower.com
Figure 9 — Offline Power Supply Configuration
OffLine Power Supply Configuration
The FARM maintains the DC output bus voltage between 250
and 370 Vdc over the entire input voltage range, which is
compatible with Vicor 300 V input converters. The FARM
automatically switches to the proper bridge or doubler mode
depending on the input voltage, eliminating the possibility of
damage due to improper line connection. The FARM1xxx 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 FARM2xxx
is rated for 750 W and 1000 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.
Strap (ST) Pin.
In addition to input and output power pin
connections, it is necessary to connect the Strap pin to the center
junction of the series hold-up capacitors (C1, C2, see Fig. 9) for
proper (autoranging) operation. Metal oxide varistors, V1 and
V2 provide capacitor protection. The bleeder resistors (R1, R2,
see Fig. 9)
discharge the hold-up capacitors when power is
switched off. Capacitors C7 and C8 are recommended if the
hold-up capacitors are located more than 3 inches (75 mm)
from the FARM output pins.
Enable (EN) Pin. (see Fig. 10)
The Enable pin must be
connected to the PC or Gate-In pin of all converter modules to
disable the converters during power up. Otherwise, the
converters would attempt to start while the hold-up capacitors
were being charged through an unbypassed current limiting
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 or (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 FARM, hence the –Out of the FARM 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.
+IN
PC (GATE IN)
PR
–IN
+IN
PC (GATE IN)
PR
–IN
Vicor DC-DC
Converter
R1
R2
C1
C2
V1
V2
D2
D1
C3
C5
C4
C6
F1
F2
Vicor DC-DC
Converter
To additional modules
C7**
C8**
FARM
Filter/Autoranging
Rectifier Module
N
EMI GND
N/C
L
+
BOK
ST
EN
–
Z1
C9
L
PE
N
R3
D4
C11
C10
D3
R4
F3
*
Vicor
Part
Description
Part Number
C1,2
Hold-up capacitors
C3-C6
4,700 pF (Y2 type)
01000
C7,8**
Film Cap., 0.61 F
06852
C9
0.47 F
03047
C10,C11
0.001 F
D1, 2
Diode
00670
D3, 4
1N5817
26108
F1, F2
Use recommended fusing for specific
DC-DC Converters
R1, 2
150 KΩ, 0.5 W
R3, 4***
250 Ω
V1,2
220 V MOV
30234-220
Z1
MOV 270
30076
Sizing PCB traces:
All traces shown in bold carry significant
current and should be sized accordingly.
N/ST/L
10 A rms at 90 Vac and 500 W
+/– In
4 A DC at 190 Vdc and 750 W
FARM2-xxx
N/ST/L
20 A rms at 90 Vac and 750 W
+/– In
8 A DC at 190 Vdc and 1000 W
* See Agency Approvals on FARM data sheet.
**
Required if C1 & C2 are located more than
3 in (75 mm) from output of the FARM.
***Not used with VI-260/VI-J60
Not used with VI-260/VI-J60
APPLICATION NOTE (CONT.)
相关PDF资料 |
PDF描述 |
|---|---|
| FARM1EN3 | 1-OUTPUT 500 W AC-DC UNREG PWR SUPPLY MODULE |
| FARM2T22 | 1-OUTPUT 750 W AC-DC UNREG PWR SUPPLY MODULE |
| FARM2CS3 | 1-OUTPUT 750 W AC-DC UNREG PWR SUPPLY MODULE |
| FARMGCG3 | 1-OUTPUT 500 W AC-DC UNREG PWR SUPPLY MODULE |
| FARM1HF3 | 1-OUTPUT 500 W AC-DC UNREG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FARM1CF3 | 制造商:POWERBOX 制造商全称:Powerbox 功能描述:AUTORANGING AC INPUT WITH FILTER |
| FARM1CG1 | 制造商:POWERBOX 制造商全称:Powerbox 功能描述:AUTORANGING AC INPUT WITH FILTER |
| FARM1CG2 | 制造商:POWERBOX 制造商全称:Powerbox 功能描述:AUTORANGING AC INPUT WITH FILTER |
| FARM1CG3 | 制造商:POWERBOX 制造商全称:Powerbox 功能描述:AUTORANGING AC INPUT WITH FILTER |
| FARM1CN1 | 制造商:POWERBOX 制造商全称:Powerbox 功能描述:AUTORANGING AC INPUT WITH FILTER |
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