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PRELIMINARY
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Parameter Rating Unit Notes
L to N voltage 264 Vac Continuous
L to N voltage 280 Vac 100ms
+Out to –Out voltage 400 Vdc
B OK to –Out voltage 16 Vdc
EN to –Out voltage 16 Vdc
Mounting torque 4-6(0.45-0.68) in-lbs (N-m) 6 each, 4-40 screw
Pin soldering temperature 500 (260) °F (°C) <5 sec; wave solder
Pin soldering temperature 750 (390) °F (°C) <7 sec; hand solder
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
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.
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.
Data Sheet
FARM
TM
Filter/
Autoranging Rectifier Module
Up to 1000 Watts
45
Shown actual size:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
Absolute Maximum Rating
Thermal Resistance and Capacity
Parameter Min Typ Max Unit
Baseplate to sink; flat, greased surface 0.16 °C/Watt
Baseplate to sink; with thermal pad (P/N 20264) 0.14 °C/Watt
Baseplate to ambient 8.0 °C/Watt
Baseplate to ambient; 1000 LFM 1.9 °C/Watt
FARM 1 C 1 1
Product
Type
1 = 500/750W
2 = 750/1000W
Baseplate
1 = Slotted
2 = Threaded
3 = Thru-hole
Pin Style*
1= Short Pin
2= Long Pin
S= Short ModuMate
N= Long ModuMate
Product Grade
C = –20°C to +100°C
T = –40°C to +100°C
Part Numbering
*Pin styles S & N are compatible with the ModuMate interconnect system for socketing and surface mounting.
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PRELIMINARY
Parameter Min Typ Max Unit Notes
Operating input voltage 90 132 Vac Autoranging (doubler mode)
Operating input voltage 180 264 Vac Autoranging (bridge mode)
Input undervoltage 90 Vac No damage
AC line frequency 47 63 Hz C–Grade
AC line frequency 47 880 Hz T–Grade
Power factor 0.60 0.65 Typical line
Inrush current
FARM1xxx 30 Amps 264Vac peak line, cold start
FARM2xxx 60 Amps 264Vac peak line, cold start
Input surge withstand
2kV–50 µs common mode
EN61000-4-5
1kV–50 µs differential mode
SAFETY SPECIFICATIONS (FARM1xxx, FARM2xxx)
MODULE INPUT SPECIFICATIONS (FARM1xxx, FARM2xxx)
MODULE OUTPUT SPECIFICATIONS
Electrical Characteristics
Electrical characteristics apply over the full operating range of input voltage, output power and baseplate temperature, unless
otherwise specified. All temperatures refer to the operating temperature at the center of the baseplate. Specifications apply for
AC mains having up to 5% total harmonic distortion.
Parameter Min Typ Max Unit Notes
Safety approvals UL 1950, CSA 22.2 No. 950,
TÜV, VDE, EN60950, CE Marked
Isolation voltage (in to out) None Isolation provided by DC-DC converter(s)
Isolation voltage (I/O to baseplate) 1500 Volts, rms
Leakage current 1.2 mA 264Vac
FARM1xxx FARM2xxx
Parameter Min Typ Max Min Typ Max Unit Notes
Output power 0 500 0 750 Watts 90-132Vac
Output power 0 750 0 1000 Watts 180-264Vac
Efficiency, 120Vac 94 96 94 96 %
Efficiency, 240Vac 94 96 94 96 %
Output voltage 250 370 250 370 Vdc 90-264Vac
Hold-up capacitance 1,800 3,300 µF
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Electrical Characteristics (continued)
MODULE CONTROL SPECIFICATIONS
MODULE GENERAL SPECIFICATIONS
Parameter Min Typ Max Unit Notes
AC Bus OK (B OK)
Low state resistance 15 Ω To negative output - Bus normal
Low state current 50 mA Bus normal
High state voltage 14.8 15.0 15.2 Vdc Bus abnormal, 27K internal pull up to 15Vdc (see Fig.11)
B OK true threshold 235 240 245 Vdc Output Bus voltage
B OK false threshold 200 205 210 Vdc Output Bus voltage
Module Enable (EN)
Low state resistance 15 Ω To negative output - Converters disabled
Low state current 50 mA
High state voltage 14.8 15.0 15.2 Vdc 150K internal pull up to 15Vdc (see Fig. 10)
Enable threshold 235 240 Vdc Output bus voltage
Disable threshold 185 190 195 Vdc Output bus voltage
AC Bus OK - Module Enable, differential error* 15 17 20 Vdc AC Bus OK and Module Enable thresholds track
Parameter Min Typ Max Unit Notes
MTBF >1,000,000 Hours 25˚C, Ground Benign
Baseplate material Aluminum
Cover Polyetherimide
Pin Material Copper, Tin/lead solder dipped
Weight 3.1(88) Ounces (grams)
Size 2.28 x 2.2 x 0.5 Inches
57,9 x 55,9 x 12,7 (mm)
Storage Temperature (C, T-Grade) -40 +125 °C
Operating Temperature (C-Grade) -20 +100 °C Baseplate
(T-Grade) -40 +100 °C Baseplate
* Tracking error between BUS OK and Enable thresholds
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PRELIMINARY
Operating Characteristics
Figure 1—Start-up at 120Vac input
Figure 3—Power down, from 120Vac Figure 4—Power down, from 240Vac
Figure 2—Start-up at 240Vac input
Vdc output
Strap
Engaged
Iac input @2A / mV
Iac input @2A / mV
Enable
Enable
B OK
Vdc output
B OK
Vdc output
Enable
B OK
Vdc output
Enable
B OK
Figure 5—Output overvoltage protection 240Vac range
Vdc output
➞
Enable
B OK
Figure 6—Typical Conducted Emissions
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The Filtered, Autoranging Rectifier Module (FARM) provides an
effective solution for the AC front end of a power supply built
with Vicor DC-DC converters. This high performance power
system building block satisfies a broad spectrum of requirements
and agency standards.
In addition to providing transient/surge immunity and EMI
filtering, the FARM contains all of the power switching and
control circuitry necessary for autoranging rectification, inrush
current limiting, and overvoltage protection. This module also
provides converter enable and status functions for orderly power
up/down control or sequencing. To complete the AC front end
configuration, the user only needs to add hold-up capacitors, and
a few discrete components.
Functional Description
Power-Up Sequence. (see Fig. 8):
Upon application of input power, the output bus capacitors
begin to charge. The thermistor limits the charge current,
and the exponential time constant is determined by the
hold-up capacitor value and the thermistor cold resistance.
The slope (dv/dt) of the capacitor voltage versus time
approaches zero as the capacitors become charged to the
peak of the AC line voltage.
The switch that bypasses the inrush limiting PTC (positive
temperature coefficient) thermistor is open when power is
applied, as is the switch that engages the strap for voltage
doubling. (see Fig. 7). In addition, the converter modules
are disabled via the Enable (EN) line, and Bus-OK (BOK)
is high.
If the bus voltage is less than 200V as the slope nears
zero, the voltage doubler is activated, and the bus voltage
climbs exponentially to twice the peak line voltage.
If the bus voltage is greater than 200V, the doubler is
not activated.
If the bus voltage is greater than 235V as the slope
approaches zero, the inrush limiting thermistor is
bypassed. Below 235V, it is not bypassed.
The converters are enabled 50 milliseconds after the
thermistor bypass switch is closed.
Bus-OK is asserted after an additional 50 millisecond
delay to allow the converter outputs to settle within
specification.
Power-Down Sequence. (see Fig. 8) When input power is
turned off or fails, the following sequence occurs as the bus
voltage decays:
Bus-OK is deasserted when the bus voltage falls below
210Vdc.
The converters are disabled when the bus voltage falls
below 190Vdc. If power is reapplied after the converters
are disabled, the entire power-up sequence is repeated. If
a momentary power interruption occurs and power is
reestablished before the bus reaches the disable threshold,
the power-up sequence is not repeated, i.e., the power
conversion system “rides through” the momentary
interruption.
Application Note
Figure 7—Functional block diagram: autoranging rectifier Figure 8—Timing diagram: power up/down sequence
1.1
2.1
3.1
4.1
5.1
1.2
2.2
Power
400
300
200
100
Up
1. 1
0
2.1
3.1
50ms
4.1
5.1
50ms
+Out
90–132V
PTC
L
N
Thermistor
Microcontroller
Strap
Strap
–Out
EN
BOK
AC Line
Output
Bus
(Vdc)
Strap
PTC
Thermistor
Bypass
Converter
Enable
Bus OK
Power
Down
2.2
1.2
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PRELIMINARY
Figure 9—Converter connections
Application Note (continued)
Off-Line Power Supply Configuration
The FARM maintains the DC output bus voltage between 250
and 370Vdc over the entire input voltage range, which is
compatible with Vicor 2nd Generation, 300V input converters as
well as 1st Generation VI-26x and VI-J6x DC-DC 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 500W in the low range (90-132Vac
input), and 750W in the high range (180-264Vac input). The
FARM2xxx is rated for 750W and 1000W 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. Gas tubes 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 holdup capacitors
are located more than 3 inches 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
15V through a 150kΩ 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 (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 varistors conduct. The thermistor bypass
switch also opens if a fault or overload reduces the bus voltage
to less than 180Vdc.
Holdup Box (HUB)
820µF HUB820-S 2200µF HUB2200-S
1200µF HUB1200-S 2700µF HUB2700-S
1800µF HUB1800-S 3300µF HUB3300-S
N
Z1
C9
L
PE
N
EMI GND
FARM
Filter/Autoranging
Rectifier Module
N/C
L
Description
Part
Holdup capacitors
C1,2
4700pF
C3–6
150kΩ, 0.5W
R1,2
200V MOV
V1,2
3A, PC Tron
F1,2
Diode
D1,2
*
Film Cap., 0.8µf
C7,8
MOV
Z1
0.47µF
C9
1N5817
D3,D4
.001µF
C10,C11
500Ω
R3
Sizing PCB traces:
All traces shown in bold carry significant
current and should be sized accordingly.
FARM1-xxx
10A rms at 90Vac and 500W
N/ST/L
4A DC at 190Vdc and 750W
+/– In
*
FARM2-xxx
N/ST/L
20A rms at 90Vac and 750W
+/– In
8A DC at 190Vdc and 1000W
Required if C1 & C2 are located more than
3 inches from output of FARM.
+
B OK
ST
EN
–
Vicor
Part Number
see text
01000
00127-1503
20461-200
02178
00670
03040
26108
C7*
C8*
R3
To additional modules
R1R2C1
V1
V2
D1
D2
F1
C2
F2
D4
C3
+In
C10
PC (Gate In)
D3
C11
C6
PR (Gate Out)
–In
C4
C5
+In
PC (Gate In)
PR (Gate Out)
–In
Vicor DC-DC
Converter
Vicor DC-DC
Converter
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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(CV
2
) (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 = P∆t = C(V
1
2
–V
2
2
) / 2 (2)
Where: P = operating power
∆t = discharge interval
V
1
= capacitor voltage at the beginning
of ∆t
V
2
= capacitor voltage at the end of ∆t
Rearranging Equation 2 to solve for the required
capacitance:
C = 2P∆t / (V
1
2
–V
2
2
) (3)
Application Note (continued)
Figure 10—Enable (EN) function
Figure 11—Bus OK (BOK) isolated power status indicator
4.7nF
L1
4.7nF
N
EMI GND
N/C
L
+
B OK
ST
EN
–
.47µF
.099µF
330µH
Figure 12—Internal filter
N
EMI GND
N/C
L
Micro-
controller
150k
+
15Vdc
B OK
ST
EN
–
N
Micro-
controller
15 Vdc
27kΩ
EMI GND
N/C
L
Optocoupler DI pkg. 26106
Optocoupler SM pkg. 26109
B OK
ST
EN
+
–
+5 Vdc
Secondary
referenced
+In
PC (Gate In)
Vicor DC-DC
Converter
PR (Gate Out)
–In
+In
PC (Gate In)
Vicor DC-DC
Converter
PR (Gate Out)
–In
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PRELIMINARY
Figure 14—Hold-up time vs. operating power and total bus
capacitance, series combination of C1, C2 (see Fig. 9)
Figure 16—Ripple voltage vs. operating power and bus
capacitance, series combination of C1, C2 (see Fig. 9)
Figure 15—Ride-through time vs. operating power
Figure 13—Hold-up time
The power fail warning time (∆t) is defined as the interval
between B OK and converter shutdown (EN) as illustrated
in Fig. 13. The Bus-OK and Enable thresholds are 205V and
185V, respectively. A simplified relationship between
hold-up time, operating power, and bus capacitance is
obtained by inserting these constants:
C = 2P∆t / (205
2
– 1852)
C = 2P∆t / (7,800)
It should be noted that the series combination (C1, C2,
see Fig. 9) requires each capacitor to be twice the calculated
value, but the required voltage rating of each capacitor is
reduced to 200V.
Allowable ripple voltage on the bus (or ripple current in the
capacitors) may define the capacitance requirement.
Consideration should be given to converter ripple rejection
and resulting output ripple voltage. The ripple rejection (R)
of Vicor converters is specified as a function of the
input/output voltage ratio:
R = 30 + 20log(Vin / Vout) (4)
For example, a converter whose output is 15V and nominal
input is 300V will provide 56dB ripple rejection, i.e., 10V p-p
of input ripple will produce 15mV p-p of output ripple
(see Fig. 17). Equation 3 is again used to determine the
required capacitance. In this case, V
1
and V2are the
instantaneous values of bus voltage at the peaks and valleys
(see Fig. 13) of the ripple, respectively. The capacitors must
hold up the bus voltage for the time interval (∆t) between
peaks of the rectified line as given by:
∆t = (π – θ) / 2πf (5)
Where: f = line frequency
θ = rectifier conduction angle
The approximate conduction angle is given by:
θ = Cos
-1
(V
2/V1
)
(6)
Application Note (continued)
Ripple (V p-p)
π –θθ
Power
Fail
Hold-up Time
Ride-Thru Time
B OK
Power Fail
Warning
Converter
Shutdown
254V
205V
185V
40
35
30
25
20
15
10
Power Fail Warning (ms)
5
0
1100µF
*
Operating Power (W)
820µF
*
2200µF1600µF1300µF
680µF
*
750500250
(FARM2XXX)
(FARM1XXX)
1000
100
90
80
70
60
50
40
30
20
Ride-through Time (ms)
10
0
Operating Power (W)
Total
capacitance
820µF
90Vac 115Vac
1000750500250
30
25
20
*
*
15
10
P-P Ripple Volts (V)
5
0
1100µF
Operating Power (W)
820µF
*
680µF
2200µF1600µF1300µF
(FARM1XXX)
(FARM2XXX)
1000750500250
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Figure 17—Converter ripple rejection vs. output voltage
Determining Ride-through Time. Figure 15 illustrates ridethrough time as a function of line voltage and output power,
and shows that at a nominal line of 90Vac, ride-through would
be 68 ms. Ride-through time is a function of line voltage.
Determining Ripple Voltage on the Hold-up Capacitors.
Figure 16 is used to determine ripple voltage as a function of
operating power and bus capacitance, and shows that the
ripple voltage across the hold-up capacitors will be 12V p-p.
Determining the Ripple on the Output of the
DC-DC Converter. Figure 17 is used to determine the ripple
rejection of the DC-DC converter and indicates a ripple
rejection of approximately 60 dB for a 12V output. Since the
ripple on the bus voltage is 12Vac and the ripple rejection of
the converter is 60 dB, the output ripple of the converter due
to ripple on its input (primarily 120 Hz) will be 12mV p-p.
Note that 2nd Generation converters have greater ripple
rejection then either VI-200s or VI-J00s.
For more information about designing an autoranging
AC input power supply using the FARM and Vicor DC-DC
converter modules, contact Vicor Applications Engineering at
the nearest Vicor Technical Support Center, or send E-mail to
apps@vicr.com.
• • •
Another consideration in hold-up capacitor selection is their
ripple current rating. The capacitors’ rating must be higher
than the maximum operating ripple current. The approximate
operating ripple current (rms) is given by:
Irms = 2P/Vac (7)
Where: P = total output power
Vac = operating line voltage
Calculated values of bus capacitance for various hold-up
time, ride-through time, and ripple voltage requirements are
given as a function of operating power level in Figures 14, 15,
and 16, respectively.
Example
In this example, the output required from the DC-DC converter
at the point of load is 12Vdc at 320W. Therefore, the output
power from the FARM would be 375W (assuming a converter
efficiency of 85%). The desired hold-up time is 9 ms over an
input range of 90 to 264Vac.
Determining Required Capacitance for Power Fail
Warning. Figure 14 is used to determine capacitance for a
given power fail warning time and power level, and shows
that the total bus capacitance must be at least 820 µF. Since
two capacitors are used in series, each capacitor must be at
least 1,640 µF. Note that warning time is not dependent on
line voltage. A hold-up capacitor calculator is available on the
Vicor website, at vicorpower.com.
Application Note (continued)
80
75
70
65
60
55
50
Ripple Rejection (dB)
45
40
Output Voltage
50301552
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PRELIMINARY
PCB Mounting Specifications
Mechanical Diagram
Converter Pins
No. Function Label
1 Neutral N
2 EMI GND
3NC
4 Line L
5 –Out –
6 Enable EN
7Strap ST
8 BUS OK BOK
9+Out +
(2X)
0.01
0.35
8,8
0.12
3,1
DIA,(7X)
0.150
3,81
(REF)
DIA,(2X)
0.080
2,03
431
98276 5
0.23
5,8
0.400
10,16
1.400
35,56
1.000
25,40
0.700
17,78
2.20
55,9
1.74
44,2
1.900
48,26
0.300 ±0.015
7,62±0,38
0.300±0.015
7,62±0,38
FULL R (6X)
(6X)
(REF.)
0.10
2,5
2.000
50,80
1.30
33,0
2.28
57,9
2.20
55,9
0.130
3,30
0.10
2,5
0.49
12,4
0.65
16,5
0.06
1,5
R(3X)
12
X 45˚
CHAMFER
Use a 4-40 Screw (6X)
Torque to:
5 in-lbs
0.57 N-m
0.54
13,7
0.42
10,6
Pin Style 2 &N
(Long)
0.62
15,7
Pin Style 1&S
(Short )
(9X)
(9X)
0.50 ±0.02
12,7 ±0,5
Slotted (Style 1)
or
Threaded (Style 2)
4-40 UNC-2B (6X)
or
Thru Hole (Style 3)
#30 Drill Thru (6X)
(0.1285)
0.195
4,95
1.400*
35,56
1.000*
25,40
0.700*
17,78
0.400*
10,16
1.790
45,47
0.06
1,5
R (4X)
0.158
4,01
56789
12 34
±0.003
±0,08
* DENOTES
TOL =
PCB THICKNESS
0.062 ±0.010
1,57 ±0,25
PIN STYLE 1&S
0.094 ±0.003
2,39 ±0,08
INBOARD
SOLDER
MOUNT
0.43
10,9
0.53
13,5
1.900*
48.26
1.900*
48,26
1.584*
40,23
0.164 ±0.003
4,16 ±0,08
PIN STYLE 2&N
0.094 ±0.003
2,39 ±0,08
ONBOARD
SOLDER
MOUNT
0.164 ±0.003
4,16 ±0,08
PLATED
THRU HOLE
DIA
(7X)
(2X)
ALL MARKINGS
THIS SURFACE
PINS STYLES
STYLE 1 & 2: TIN/LEAD
HOT SOLDER DIPPED
STYLE S & N: GOLD PLATED COPPER
ALUMINUM
BASEPLATE
Page 11
Set your site on VICOR at www.vicorpower.com
PRELIMINARY
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 FARM, Filter/Autoranging Rectifier Module Rev. 4.7 Page 11 of 12
Notes
Page 12
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715 FARM, Filter/Autoranging Rectifier Module P/N 22952 Rev. 4.7 4/03/10M
Set your site on VICOR at www.vicorpower.com
Vicor’s comprehensive line of power solutions includes modular, high
density DC-DC converters and accessory components, configurable power
supplies, and custom power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is
assumed by Vicor for its use. No license is granted by implication or otherwise under any patent or patent
rights of Vicor. Vicor components are not designed to be used in applications, such as life support systems,
wherein a failure or malfunction could result in injury or death. All sales are subject to Vicor’s Terms and
Conditions of Sale, which are available upon request.
Specifications are subject to change without notice.
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
Email
Vicor Express: vicorexp@vicr.com
Technical Support: apps@vicr.com
Component Solutions
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