Data Sheet
FIAM
Features
•
•
•
•
•
•
•
•
TM
Filter Input Attenuator Module
RoHS Compliant (with F or G pin style)
EMI filtering-Class B
(1)
Transient protection
Low profile mounting options
10 and 20 Ampere versions
UL, CSA, EN compliance
Mini-size package
Inrush current limiting
Product Highlights
The FIAM is a DC front-end module providing
transient protection, inrush current limiting and
Class B EMI filtering in a Mini-size package. The
FIAM enables designers using Vicor 48 Vin Mini,
Micro, or Maxi DC-DC converters to meet the
transient immunity and EMI requirements of
Bellcore, FCC, ETSI and European Norms and
protect system hardware from inrush current. The
FIAM accepts an input voltage of 36 – 76 Vdc, is
available in 10 or 20 A versions and provides
reverse polarity protection and remote on/off control.
Internally, the FIAM employs a transient suppressor
diode directly across the input. Refer to Figure 1.
This is followed by a passive EMI filter that
provides attenuation of both common mode and
differential mode conducted emissions. Surge
protection and inrush current limiting is
accomplished by a MOS FET in series with the
positive rail whose gate is driven by the charge
pump/control circuit. During normal operation the
FET is fully enhanced; essentially a closed switch.
The charge pump limits the time rate of change of
gate bias voltage at startup, or in the event of a
voltage surge at the input. During this condition, the
source terminal of the FET follows the gate, offset by
the gate threshold voltage. A transient event at the
input, or drain terminal of the FET is therefore
attenuated and absorbed by the FET, which during
this condition is in the source follower mode. As a
result, the transient is virtually non existent at the
output of the FIAM. In addition, upon application of
power, the controlled voltage ramp up, limits the
rate at which the output capacitor is charged, thereby
limiting inrush current.
FIAM is housed in an industry standard "half brick"
module measuring 2.28" x 2.2" x 0.5" and
depending upon model selected, may be mounted
on-board or in-board for height critical applications.
Shown actual size:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
Absolute Maximum Rating
Parameter
+In to –In
+Out to –Out
Mounting torque
Operating temperature
Storage temperature
Pin soldering temperature
Rating
80
100
75
5(0.57)
– 40 to +100
– 55 to +125
500 (260)
750 (390)
Unit
Vdc
V
Vdc
in-lbs
°C
°C
°F(°C)
°F(°C)
Notes
Continuous
100 ms
Continuous
6 each, #4-40 or M3
T and H -Grade
H-Grade
<5 sec; wave solder
<7 sec; hand solder
Thermal Resistance
Parameter
Baseplate to sink
flat, greased surface
thermal pad (P/N 20264)
Baseplate to ambient
Free Convection
1000 LFM
Min
Typ
0.16
0.14
8.0
1.9
Max
Unit
°C/Watt
°C/Watt
°C/Watt
°C/Watt
Part Numbering
FIAM 1
Product
Type
1
= 10 A
2
= 20 A
C
Product Grade Temperatures (°C)
Grade
Operating
Storage
E
= – 10 to +100 – 20 to 125
C
= – 20 to +100 – 40 to 125
T
= – 40 to +100 – 40 to 125
H
= – 40 to +100 – 55 to 125
1
2
S
N
F
G
=
=
=
=
=
=
1
Pin Style
Short
Long
Short ModuMate
Long ModuMate
Short RoHS
Long RoHS
1
Baseplate
1
= Slotted
2
= Threaded
3
= Thru-hole
Compatible Products
•
Mini, Micro, Maxi 48 V Input DC-DC converters
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FIAM, Filter Input Attenuator Module
Rev. 1.9
Page 1 of 6
Set your site on VICOR at vicorpower.com
Specifications
(typical at T
BP
= 25°C, nominal line and 75% load, unless otherwise specified)
INPUT SPECIFICATIONS
Parameter
Input voltage
Inrush limiting
Min
36
Typ
48
Max
76
0.014
Unit
Vdc
A/µF
Notes
Continuous
Capacitor C1. Fig 6
OUTPUT SPECIFICATIONS
Parameter
Output current
FIAM1xxx
FIAM2xxx
Efficiency
External capacitance
FIAM1xxx
FIAM2xxx
96.0
10
100
97.5
150
330
µF
µF
Min
Typ
Max
10
20
Unit
A
A
Internal voltage drop is 1.4 max. @ 20 A, 100 °C baseplate
See illustration on page 3, Fig 6.
100 V
100 V
Notes
CONTROL PIN SPECIFICATIONS
Parameter
ON / OFF control
Enable (ON)
Disable (OFF)
Min
0.0
3.5
Typ
Max
1.0
5.0
Vdc
Unit
Notes
Referenced to –Vout
100kΩ internal pull-up resistor
ELECTROMAGNETIC COMPATIBILITY
Parameter
Transient immunity
Bellcore TR-NWT-000499
ETS 300 386-1 Class 2
Min
Typ
Max
200
200
250
Unit
V
V
V
Notes
1 µsec duration
5.0 µsec rise time, 50 µsec duration surge
1 – 100 nsec burst
SAFETY SPECIFICATIONS
Parameter
Dielectric withstand (I/O to baseplate)
2,121
Vdc
Min
Typ
1,500
Max
Unit
V
RMS
Notes
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FIAM, Filter Input Attenuator Module
Rev. 1.9
Page 2 of 6
Set your site on VICOR at vicorpower.com
Specifications (Cont.)
AGENCY APPROVALS
Safety Standards
UL1950, CSA 22.2-950, EN60950
Conducted Emission (Figures 2&3)
(1)
Bellcore GR-001089-Core
EN55022
FCC Part 15
Issue 2
Level B; When used with Vicor Mini, Maxi, Micro 48 Vin DC-DC converter
Level B
Markings
Notes
GENERAL SPECIFICATIONS
Parameter
Reverse polarity protection
Weight
Warranty
3.1
(88)
4
(113)
2
ounces
(grams)
years
Min
Typ
Max
Unit
Remarks
No damage to module, external fuse required
+IN
+OUT
EMI
Filter
ON/OFF
Charge Pump /
Control
-IN
EMI GND
Figure 1
— FIAM Block Diagram
-OUT
(1)
EMI performance is subject to a wide variety of external influences such as PCB construction, circuit layout etc. As such, external
components in addition to those listed herein may be required in specific instances to gain full compliance to the standards specified.
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FIAM, Filter Input Attenuator Module
Rev. 1.9
Page 3 of 6
Set your site on VICOR at vicorpower.com
Conducted Noise
Figure 2
— FIAM and Model V48A12C500 DC-DC converter.
Figure 3
— FIAM and Model V48B24C250 DC-DC
converter.
Inrush Limiting
Tek
Stop:
Single Seq. 5.00 MS/s
[
T
Ch1 Zoom:
Transient Immunity
]
Tek Run: 10.0 MS/s
1.0X Vert 0.005X Horz
@ 200.0 V
➞
INPUT VOLTAGE
INPUT CURRENT
➞
INPUT TRANSIENT
Ch1 = Input
Ch2 = Output
Ch1 = Vdc in
Ch2 = Vdc out
Ch3 =
Idc
in
@0.2 A/mV
4
➞
➞
➞
OUTPUT VOLTAGE
2
➞
Ch1
10.0 V
Ch2
Ch4
10.0 V
M2.00 ms
10.0 mVΩ
Ch1
31.8
V
➞
OUTPUT VOLTAGE
2
➞
Ch1
25.0 V
Ch2
25.0 V
M5.00
μs
Ch4
48 V offset
8.2 A
Figure 4
— Inrush Limiting: Inrush current with 330 μF
external capacitance.
Figure 5
— Transient Immunity: FIAM output response to an
input transient.
Transient and Surge Protection
Note:
The FIAM is shown in the on state. To disable,
open the connection between ON/OFF and –Out.
4,700 pF
F1
+IN
NC
+OUT
NC
+IN
PC
+OUT
0.01 µF
Input
TRANSORB P/N
30234-120
EMI
GND
–IN
FIAM
NC
ON
OFF
–OUT
C1
0.2 µF
PR
–IN
Mini, Maxi, Micro
48 Vdc Input
DC-DC Converter
+S
SC
–S
–OUT
0.01 µF
4,700 pF
Figure 6
— Typical Connection Diagram
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FIAM, Filter Input Attenuator Module
Rev. 1.9
Page 4 of 6
Set your site on VICOR at vicorpower.com
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