Data Sheet
January 2000
SE014S110 Power Module; dc-dc Converter:
48 Vdc Input, 110 Vdc Output, 14 W
Features
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Small size and low profile:
50.8 mm x 50.8 mm x 12.7 mm
(2.00 in. x 2.00 in. x 0.50 in.)
High efficiency: 82% typical
Overcurrent protection
Remote on/off
Adjustable output voltage
Output overvoltage protection
Input-to-output isolation
Nonconductive case
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The SE014S110 Power Module uses advanced, surface-mount
technology and delivers high-quality, compact, dc-dc conver-
sion at an economical price.
UL
* 1950 Recognized,
CSA
†
C22.2 No. 950-95
Certified
Meets FCC EMI Class A limits
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Applications
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Communication equipment
Computer equipment
Distributed power architectures
Description
The SE014S110 Power Module is a 14 W, dc-dc converter that operates from a nominal 48 Vdc input and
provides a single, isolated, 110 Vdc nominal output. The low-profile module has a maximum height of 12.7 mm
(0.50 in). The power module incorporates peak-current control circuitry and a power train that combines high-
efficiency power conditioning with a well-regulated output voltage. The output is adjustable over a range from
95 V to 130 V.
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Association.
SE014S110 Power Module; dc-dc Converter:
48 Vdc Input, 110 Vdc Output, 14 W
Data Sheet
January 2000
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
Operating Ambient Temperature
(0.75 ms
–1
(150 ft./min.) above 70 °C)
Storage Temperature
I/O Isolation Voltage:
Continuous
Transient (<1 second)
Symbol
V
I
T
A
T
stg
—
—
Min
0
–40
–40
—
—
Max
63
85
100
500
1000
Unit
Vdc
°C
°C
Vdc
Vdc
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
Input Current (V
I
= 0 V to 60 V)
Inrush Transient
Input Ripple Voltage
(0.5 µH source; see Figure 1.):
Without External Input Capacitor
With External Input Capacitor*
(C
I
= 47 µF; ESR = 0.2
Ω
at T
A
= 25 °C)
Symbol
V
I
I
I, max
i
2
t
Min
40
—
—
Typ
48
—
—
Max
60
0.8
0.2
Unit
Vdc
A
A
2
s
—
—
—
—
1
100
—
—
Vp-p
mVp-p
* In most applications, the external input capacitor is not required to operate the power module. See Design Considerations section.
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 fuse with a maximum rating of 5 A in series with the input (see Safety Con-
siderations 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.
2
Tyco Electronics Corp.
Data Sheet
January 2000
SE014S110 Power Module; dc-dc Converter:
48 Vdc Input, 110 Vdc Output, 14 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage Set Point
(V
I
= 48 V; I
O
= I
O, max
; T
A
= 25 °C)
Output Voltage
(Over all line, resistive load, and temperature
conditions until end of life. See Figure 2.)
Output Regulation:
Line (V
I
= 40 Vdc to 60 Vdc)
Load (I
O
= 0 mA to 130 mA)
Temperature
(T
A
= –40 °C to +85 °C)
Output Ripple and Noise Voltage
(With external output capacitor;
ESR
≤
1
Ω
at T
A
≥
0 °C):
RMS
Peak-to-peak (0 Hz to 20 MHz)
Output Current*
(0.25 ms
–1
(50 ft./min.) natural convection at
T
A
=70 °C; 0.75 ms
–1
(150 ft./min.) airflow at
T
A
= 85 °C)
Output Current-limit Inception (V
O
= 100 V)
Output Short-circuit Current (V
O
= 1 V)
Efficiency
(V
I
= 48 V; I
O
= I
O, max
; T
A
= 25 °C; see Figure 2.)
External Output Capacitor:
Capacitance:
General Applications
Positive Ringing Generator Application
†
Equivalent Series Resistance at 100 kHz:
T
A
= 0 °C to 85 °C
T
A
= –40 °C to 0 °C
Symbol
V
O, set
V
O
Min
107.5
105
Typ
110
110
Max
112.5
115
Unit
Vdc
Vdc
—
—
—
—
—
—
—
—
—
0.5
0.5
1.5
%V
O
%V
O
%V
O
—
—
I
O
—
—
5
—
—
—
100
1
130
mVrms
Vp-p
mA
I
O
—
η
—
—
78
150
—
82
—
1
—
mA
A
%
C
O
C
O
ESR
ESR
28
—
—
—
—
680
—
—
68
—
1
4
µF
µF
Ω
Ω
* At I
O
< 5 mA, the output ripple may exceed the specified maximum output ripple.
† See Positive Ringing Generator Application section.
Tyco Electronics Corp.
3
SE014S110 Power Module; dc-dc Converter:
48 Vdc Input, 110 Vdc Output, 14 W
Data Sheet
January 2000
Electrical Specifications
(continued)
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Min
—
1
Typ
0.01
—
Max
—
—
Unit
µF
M
Ω
General Specifications
Parameter
Calculated MTBF (T
C
= 40 °C @ 80% load)
Weight
Relative Humidity (noncondensing)
Min
—
5
Typ
7,300,000
46.5
(1.64)
—
Max
51.0 (1.8)
85
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
(V
I
= 40 V to 60 V; see Figure 3.):
Switch Open — Unit Off:
Leakage Current
Withstand Voltage
Voltage Level
Current Source
Switch Closed — Unit On:
External Resistor to V
I
(+)
Voltage Level
Sink Current
Output Overvoltage Protection (clamp)
Symbol
Min
Typ
Max
Unit
—
—
V
on/off
I
on/off
—
V
on/off
I
on/off
—
—
—
5.2
—
400
—
—
—
—
—
—
—
—
—
—
142
10
60
60
140
600
1.2
150
155
µA
V
V
µA
k
Ω
V
µA
V
4
Tyco Electronics Corp.
Data Sheet
January 2000
SE014S110 Power Module; dc-dc Converter:
48 Vdc Input, 110 Vdc Output, 14 W
Input Capacitor
The power module should be connected to a low
ac-impedance input source. Source impedances of
greater than 12 µH may affect the stability of the power
module. When the source impedance exceeds 12 µH,
mount a 47 µF electrolytic capacitor (ESR = 0.2
Ω
at
100 kHz, T
A
= 25 °C) as close as possible to the mod-
ule input pins.
An external input capacitor is not required if the input
source impedance is less than 12 µH.
Test Configurations
L
V
I
(+)
0.5 µH
C
S
BATTERY
IMPEDANCE < 0.1
Ω
@ 20
°C,
100 kHz
220 µF
+
V
ripple
–
V
I
(–)
8-652(C).a
Note: Input reflected-ripple current is measured with a simulated
source impedance of 0.5 µH. Capacitor C
S
offsets possible
battery impedance. Voltage ripple is measured at the input ter-
minals of the module.
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard,
i.e.,
UL
1950 and
CSA
C22.2 No. 950-95.
If the input source is non-SELV (ELV or a hazardous
voltage greater than 60 Vdc and less than or equal to
75 Vdc), for the module's output to be considered
meeting the requirements of safety extra-low voltage
(SELV), all of the following must be true:
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Figure 1. Input Reflected-Ripple Test Setup
CONTACT AND
DISTRIBUTION LOSSES
V
I
(+)
I
I
SUPPLY
V
I
(–)
CONTACT
RESISTANCE
8-653(C)
V
O
(+)
I
O
LOAD
33 µF
V
O
(–)
The input source is to be provided with reinforced
insulation from any other hazardous voltages, includ-
ing the ac mains.
One V
I
pin and one V
O
pin are to be grounded or both
the input and output pins are to be kept floating.
The input pins of the module are not operator acces-
sible.
Another SELV reliability test is conducted on the
whole system, as required by the safety agencies, on
the combination of supply source and the subject
module to verify that under a single fault, hazardous
voltages do not appear at the module's output.
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
s
s
[
V
O
(+)
–
V
O
(–)
]
I
O
η
=
----------------------------------------------------
×
100
[
V
I
(+)
–
V
I
(–)
]
I
I
-
%
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Figure 2. Output Voltage and Efficiency
Measurement Test Setup
Design Considerations
Output Capacitor
An external output capacitor is required for operation of
the power module. The output capacitor should be
mounted as close as possible to the module output
pins. Capacitor and ESR values are shown in the Out-
put Specifications table. The voltage rating of the out-
put capacitor should be at least 160 V.
Note:
Do not ground either of the input pins of the
module without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pins and ground.
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 5 A normal-blow fuse in the ungrounded lead.
Tyco Electronics Corp.
5
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