Data Sheet
May 1998
FC050A, FC100A, FC150A Power Modules: dc-dc Converters;
18 Vdc to 36 Vdc Input, 5 Vdc Output; 50 W to 150 W
Features
s
s
s
s
s
s
s
s
s
Wide input range
High efficiency: 81% typical
Parallel operation with load sharing
Low profile: 12.7 mm (0.5 in.)
Complete input and output filtering
Constant frequency
Case ground pin
Input-to-output isolation
Remote sense
Remote on/off
Short-circuit protection
Output overvoltage clamp
The FC050A, FC100A, and FC150A Power Modules use
advanced, surface-mount technology and deliver high-quality,
compact, dc-dc conversion at an economical price.
s
s
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Applications
s
s
s
UL*
Recognized,
CSA
†
Certified,
TÜV
‡
Licensed
Distributed and redundant power architectures
Telecommunications
Options
s
Output voltage set-point adjustment (trim)
Description
The FC050A, FC100A, and FC150A Power Modules are dc-dc converters that operate over an input voltage
range of 18 Vdc to 36 Vdc and provide a precisely regulated dc output. The outputs are fully isolated from the
inputs, allowing versatile polarity configurations and grounding connections. The modules have maximum power
ratings from 50 W to 150 W at a typical full-load efficiency of 81%.
Built-in filtering, for both the input and output of each device, eliminates the need for external filters. Two or more
modules may be paralleled with forced load sharing for redundant or enhanced power applications. The package,
which mounts on a printed-circuit board, accommodates a heat sink for high-temperature applications.
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Association.
‡
TÜV
is a registered trademark of Technischer Überwachungs-Verein.
FC050A, FC100A, FC150A Power Modules: dc-dc Converters;
18 Vdc to 36 Vdc Input, 5 Vdc Output; 50 W to 150 W
Data Sheet
May 1998
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Input Voltage (continuous)
I/O Isolation Voltage
Operating Case Temperature
(See Thermal Considerations section and
Figure 18.)
Storage Temperature
Symbol
V
I
—
T
C
Min
—
—
0
Max
36
500
90
Unit
Vdc
V
°C
T
stg
–55
125
°C
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current (V
I
= 0 V to 36 V):
FC050A
FC100A
FC150A
Inrush Transient
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 12 µH source impedance;
see Figure 9.)
Input Ripple Rejection (120 Hz)
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The
safety agencies require a normal-blow, dc fuse with a maximum rating of 15 A (see Safety Considerations section).
Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same
type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.
Symbol
V
I
I
I, max
I
I, max
I
I, max
i
2
t
—
Min
18
—
—
—
—
—
Typ
28
—
—
—
—
40
Max
36
4
8
12
2.0
—
Unit
Vdc
A
A
A
A
2
s
mAp-p
—
—
60
—
dB
2
Tyco Electronics Corp.
Data Sheet
May 1998
FC050A, FC100A, FC150A Power Modules: dc-dc Converters;
18 Vdc to 36 Vdc Input, 5 Vdc Output; 50 W to 150 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life; see
Figure 10 and Feature Descriptions.)
Output Voltage Set Point
(V
I
= 28 V; I
O
= I
O, max
; T
C
= 25 °C):
Unit Operating in Parallel or PARALLEL Pin
Shorted to SENSE(–) (See Figure 10 and
Feature Descriptions.)
PARALLEL Pin Open
Output Regulation:
Line (V
I
= 18 V to 36 V)
Load (I
O
= I
O, min
to I
O, max
)
Temperature (T
C
= 0 °C to 90 °C)
Output Ripple and Noise Voltage
(See Figure 5 and Figure 11.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
Output Current
(At I
O
< I
O, min
, the modules may exceed output
ripple specifications.):
FC050A
FC100A
FC150A
Output Current-limit Inception
(V
O
= 4.5 V; see Figure 2 and Feature Descriptions.)
Output Short-circuit Current
(V
O
= 250 mV; see Figure 2.)
External Load Capacitance
(electrolytic, total for one unit or multiple paralleled
units):
FC050A
FC100A
FC150A
Efficiency
(V
I
= 28 V; I
O
= I
O, max
; T
C
= 25 °C;
see Figure 3, Figure 4, and Figure 10.)
Dynamic Response
(
∆
I
O
/
∆
t = 1 A/10 µs, V
I
= 28 V, T
C
= 25 °C; see
Figure 6 and Figure 7.):
Load Change from I
O
= 50% to 75% of I
O, max
:
Peak Deviation
Settling Time (V
O
< 10% of peak deviation)
Load Change from I
O
= 50% to 25% of I
O, max
:
Peak Deviation
Settling Time (V
O
< 10% of peak deviation)
Symbol
V
O
Min
4.75
Typ
—
Max
5.25
Unit
Vdc
V
O, set
4.90
5.00
5.10
Vdc
V
O, set
—
—
—
4.90
—
—
—
5.00
0.05
0.2
10
5.20
0.20
0.4
50
Vdc
%
%
mV
—
—
—
—
—
—
50
100
mVrms
mVp-p
I
O
I
O
I
O
—
—
1
1
1
103
—
—
—
—
—
135
10
20
30
130
170
A
A
A
% I
O, max
% I
O, max
—
—
—
η
0
0
0
80
—
—
—
81
2200
5000
5000
—
µF
µF
µF
%
—
—
—
—
—
—
—
—
150
300
150
300
—
—
—
—
mV
µs
mV
µs
Tyco Electronics Corp.
3
FC050A, FC100A, FC150A Power Modules: dc-dc Converters;
18 Vdc to 36 Vdc Input, 5 Vdc Output; 50 W to 150 W
Data Sheet
May 1998
Electrical Specifications
(continued)
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Min
—
10
Typ
1700
—
Max
—
—
Unit
pF
M
Ω
General Specifications
Parameter
Calculated MTBF (I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight
Min
—
Typ
2,000,000
—
Max
200 (7)
Unit
hours
g (oz.)
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for further information.
Parameter
Remote On/Off Signal Interface
(V
I
= 0 V to 36 V; open collector or equivalent
compatible; signal referenced to V
I
(–) terminal; see
Figure 12 and Feature Descriptions.):
Logic Low—Module On
Logic High—Module Off
Logic Low:
At I
on/off
= 1.0 mA
At V
on/off
= 0.0 V
Logic High:
At I
on/off
= 0.0 µA
Leakage Current
Turn-on Time
(I
O
= 80% of I
O, max
; V
O
within ±1% of steady state)
Output Voltage Adjustment
(See Feature Descriptions.):
Output Voltage Remote-sense Range
Output Voltage Set-point Adjustment Range (trim)
Parallel Operation Load Sharing
(See Feature Descriptions.)
Output Overvoltage Clamp
Symbol
Min
Typ
Max
Unit
V
on/off
I
on/off
V
on/off
I
on/off
—
0
—
—
—
—
—
—
—
—
5
1.2
1.0
18
50
10
V
mA
V
µA
ms
—
—
—
V
O, clamp
—
90
—
5.8
—
—
—
6.25
0.6
110
20
7.0
V
%V
O, nom
% I
O, max
V
4
Tyco Electronics Corp.
Data Sheet
May 1998
FC050A, FC100A, FC150A Power Modules: dc-dc Converters;
18 Vdc to 36 Vdc Input, 5 Vdc Output; 50 W to 150 W
Characteristic Curves
The following figures provide typical characteristics for the FC150A Power Module. The FC050A and FC100A char-
acteristics are similar to the FC150A characteristics provided here, scaled by power level where appropriate.
14
12
INPUT CURRENT, I
I
(A)
84
83
(%)
V
I
= 18 V
82
81
80
79
78
77
76
75
V
I
= 36 V
V
I
= 27 V
10
8
6
4
2
0
0
5
10
15
20
25
I
O
= 30 A
I
O
= 15 A
EFFICIENCY,
30
35
40
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE, V
I
(V)
8-832(C)
OUTPUT CURRENT, I
O
(A)
8-764(C)
Figure 1. Typical FC150A Input Characteristics at
Room Temperature
Figure 3. Typical FC050A Efficiency vs. Output
Current at Room Temperature
6
OUTPUT VOLTAGE, V
O
(V)
84
83
V
I
= 27 V
5
4
3
2
1
0
0
5
10
15
20
25
30
35
(%)
EFFICIENCY,
82
81
80
79
78
77
76
75
0
5
10
15
20
25
30
OUTPUT CURRENT, I
O
(A)
V
I
= 18 V
V
I
= 36 V
OUTPUT CURRENT, I
O
(A)
8-766(C)
8-765(C)
Figure 2. Typical FC150A Output Characteristics at
Room Temperature and 28 V Input
Figure 4. Typical FC150A Efficiency vs. Output
Current at Room Temperature
Tyco Electronics Corp.
5
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