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FARM PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 FARM
기능 FARM Filter/ Autoranging Rectifier Module
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FARM 데이터시트, 핀배열, 회로
45
Features
EMI filtering
Choice of 500W or 750W modules
96% Efficiency
Autoranging 115/230Vac input
Microprocessor controlled
Inrush current limiting
Mini sized package
Power fail signal
Module enable
PRELIMINARY
Data Sheet
FARMTM
Filter/
Autoranging Rectifier Module
Up to 1000 Watts
Shown actual size:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
Product Highlights
The FARM (Filter/Autoranging Rectifier
Module) is an AC front-end module which
provides EMI filtering, autoranging line
rectification and inrush current limiting. The
FARM is available in either 500/750W or
750/1000W models in a mini sized package
measuring only 2.28" x 2.2" x 0.5".
The FARM interfaces directly with
worldwide AC mains and may be used with
Vicor 1st or 2nd Generation 300V input
DC-DC converters to realize an autoranging,
high density, low profile switching power
supply. The FARM includes a microcontroller
that continuously monitors the AC line to
control bridge/doubler operation. The user
need only provide external capacitance to
satisfy system hold-up requirements.
Absolute Maximum Rating
Parameter
L to N voltage
L to N voltage
+Out to –Out voltage
B OK to –Out voltage
EN to –Out voltage
Mounting torque
Pin soldering temperature
Pin soldering temperature
Rating
264
280
400
16
16
4-6(0.45 -0.68)
500 (260)
750 (390)
Thermal Resistance and Capacity
Parameter
Baseplate to sink; flat, greased surface
Baseplate to sink; with thermal pad (P/N 20264)
Baseplate to ambient
Baseplate to ambient; 1000 LFM
Min
Unit
Vac
Vac
Vdc
Vdc
Vdc
in-lbs (N-m)
°F (°C)
°F (°C)
Notes
Continuous
100ms
6 each, 4-40 screw
<5 sec; wave solder
<7 sec; hand solder
Typ Max
Unit
0.16 °C/Watt
0.14 °C/Watt
8.0 °C/Watt
1.9 °C/Watt
Vicor 2nd Generation packaging technology
offers flexible mounting options for various
manufacturing processes. The FARM may be
installed as a conventional leaded device
for on-board applications, in-board for low
profile, height restricted applications,
socketed or surface mounted with optional
ModuMate interconnect products.
Part Numbering
FARM 1
Product
Type
1 = 500/750W
2 = 750/1000W
C
Product Grade
C = –20°C to +100°C
T = –40°C to +100°C
1
Pin Style*
1= Short Pin
2= Long Pin
S= Short ModuMate
N= Long ModuMate
1
Baseplate
1 = Slotted
2 = Threaded
3 = Thru-hole
*Pin styles S & N are compatible with the ModuMate interconnect system for socketing and surface mounting.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Set your site on VICOR at www.vicorpower.com
Rev. 4.7
Page 1 of 12




FARM pdf, 반도체, 판매, 대치품
Operating Characteristics
PRELIMINARY
Vdc output
Strap
Engaged
Enable
B OK
Figure 1—Start-up at 120Vac input
Vdc output
Iac input @2A / mV
Enable
B OK
Figure 3—Power down, from 120Vac
Vdc output
Enable
B OK
Figure 2—Start-up at 240Vac input
Vdc output
Iac input @2A / mV
Enable
B OK
Figure 4—Power down, from 240Vac
Vdc output
Enable
B OK
Figure 5—Output overvoltage protection 240Vac range
Figure 6—Typical Conducted Emissions
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Set your site on VICOR at www.vicorpower.com
Rev. 4.7
Page 4 of 12

4페이지










FARM 전자부품, 판매, 대치품
Application Note (continued)
PRELIMINARY
N
EMI GND
+
15Vdc
B OK
150k
ST
N/C
L
Micro-
controller
EN
Figure 10—Enable (EN) function
+In
PC (Gate In)
Vicor DC-DC
Converter
PR (Gate Out)
–In
N+
15 Vdc
EMI GND
27k
B OK
ST
N/C
Micro-
controller
L
EN
+5 Vdc
Secondary
referenced
+In
PC (Gate In)
Vicor DC-DC
Converter
PR (Gate Out)
–In
Optocoupler DI pkg. 26106
Optocoupler SM pkg. 26109
Figure 11—Bus OK (BOK) isolated power status indicator
N
EMI GND
N/C
L
330µH
L1
.47µF
4.7nF
4.7nF
+
.099µF
B OK
ST
EN
Figure 12—Internal filter
Bus-OK (BOK) Pin. (see Fig. 11) 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 FARM. 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 transformation 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. (see Fig. 12) An integral input filter consists of a
common mode choke and Y rated capacitors (line-ground)
plus two X rated capacitors (line-line). This filter
configuration provides common mode and differential mode
insertion loss in the frequency range between 100kHz and
30MHz as illustrated in Figure 6.
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. 13).
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:
Where:
ε = Pt = C(V12–V22) / 2
(2)
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 = 2Pt / (V12–V22)
(3)
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FARM, Filter/Autoranging Rectifier Module
Set your site on VICOR at www.vicorpower.com
Rev. 4.7
Page 7 of 12

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