48IMS7-12-9CZ [BEL]
DC-DC Regulated Power Supply Module, 7.2W,;
| 型号： | 48IMS7-12-9CZ |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 7.2W, |
| 文件： | 总14页 (文件大小：513K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Wide input voltage ranges up to 75 V DC
1 or 2 outputs up to 48 V DC
1500 V DC I/O electric strength test voltage
• RoHS lead solder exemption compliant
• Electrical isolation, single and double output units
• High efficiency (typ. 84%)
• Emissions below EN 55 022 level B
• Immunity to IEC/EN 61000-4-2, -3, -4, -5 and -6
10.5
0.42"
25.4
1.0"
• Inhibit input, output voltage adjustable
50.8
2.0"
• Flex power: Flexible load distribution
• No load and short-circuit proof
• Operating ambient temperature range –40...71°C
• High reliability and no derating
• 2" x 1" case with 10.5 mm profile
• Supplementary insulation
Safety according to IEC/EN 60950, UL 1950
LGA
Description
where the bus voltage may exceed the SELV limit of
60 VDC. They are designed and built according to the
international safety standards IEC/EN 60950, UL 1950,
CAN/CSA C22.2 No. 950-95 and are LGA and UL marked.
The IMS7 Series of board mountable 7 watt DC-DC
converters has been designed according to the latest
industry requirements and standards. The converters are
particularly suitable for use in industry or tele-
communications where variable input voltages or high
transient voltages are prevalent.
A special feature is their small case size, 2" x 1" with
10.5 mm profile.
Providing two wide input voltage ranges, 14 to 36 V DC and
36 to 75 VDC, models are available with single and
electrically isolated double outputs allowing the
configuration of output voltages from 3.3 up to 48 VDC
externally adjustable, with flexible load distribution on
double output units. An inhibit input allows remote
converter on/off.
The circuit comprises of integrated planar magnetics and
all components are automatically assembled and solidly
soldered onto a single PCB without any wire connections.
Magnetic feedback ensures maximum reliability and
repeatability in the control loop over all operating
conditions. Careful considerations of possible thermal
stresses ensure the absence of hot spots providing long life
in environments where temperature cycles are a reality.The
thermal design allows operation at full load up to an
ambient temperature of 71°C in free air without using any
potting material. For extremely high vibration environments
the case has holes for screw mounting.
Features include efficient input and output filtering with
unsurpassed transient and surge protection, low output
ripple and noise, consistently high efficiency over the entire
input voltage range, high reliability as well as excellent
dynamic response to load and line changes.
The converters provide supplementary insulation with
SELV outputs as required in battery supported systems
Table of Contents
Page
Page
Description ....................................................................... 1
Type Survey and Key Data ............................................... 2
Type Key........................................................................... 2
Functional Description ..................................................... 3
Electrical Input Data ......................................................... 4
Electrical Output Data ...................................................... 6
Auxiliary Functions ........................................................... 8
Electromagnetic Compatibility (EMC) ............................ 10
Immunity to Environmental Conditions........................... 11
Mechanical Data ............................................................ 12
Safety and Installation Instructions ................................ 13
Description of Options.................................................... 14
Accessories.................................................................... 14
APR 20, 2006 revised to JUN 05, 2006
Page 1 of 14
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IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Model Selection
Table 1: Type survey
Output 1
Output 2
Output
power
Po nom [W]
Input voltage range and efficiency
Options
1
1
Vo nom
[VDC]
Io nom
[A]
Vo nom
Io nom
[A]
Vi min to Vi max
ηtyp
[%]
Vi min to Vi max
ηtyp
[%]
[VDC]
14 to 36 VDC
36 to 75 VDC
3.3
5.1
1.5
1.2
-
-
-
-
5
6.1
24IMS7-03-9
24IMS7-05-9
79
81
48IMS7-03-9
48IMS7-05-9
79
82
M,L,Z
M,L,Z
12
15
0.6
0.48
-
-
-
-
7.2
7.2
24IMS7-12-9C
24IMS7-15-9C
84
84
48IMS7-12-9C
48IMS7-15-9C
84
84
L,Z
L,Z
5
0.7
0.3
0.24
0.15
5
0.7
0.3
0.24
0.15
7
24IMS7-05-05-9
24IMS7-12-12-9
24IMS7-15-15-9
24IMS7-24-24-9
83
84
84
84
48IMS7-05-05-9
48IMS7-12-12-9
48IMS7-15-15-9
48IMS7-24-24-9
83
84
84
84
M,L,Z
M,L,Z
M,L,Z
M,L,Z
12
15
24
12
15
24
7.2
7.2
7.2
1 Flexible load distribution on double outputs possible.
Model numbers highlighted in yellow or shaded are not recommended for new designs.
Part Number Description
24 IMS 7 - 05 - 05 -9 M L Z
Input voltage range Vi
14 to 36 VDC ............................................. 24
36 to 75 VDC ............................................. 48
Series ......................................................................... IMS7
Output voltage type for output 1 ............. 03, 05, 12, 15, 24
Dash: Designates double output unit with two indepen-
dent galvanically isolated outputs ................. -
1
Output voltage type for output 2 ................... 05, 12, 15, 24
Operating ambient temperature range TA
–40 to 71°C ................................................ -9
Options:
Surface-mount version with pins................. M
Surface-mount version with PCB lid ............ L
Open frame .................................................. Z
Example: 48IMS7-05-05-9M: DC-DC converter, input voltage range 36 to 75 V, 2 galvanically isolated outputs each
providing 5 V, 700 mA, surface mount version.
APR 20, 2006 revised to JUN 05, 2006
Page 2 of 14
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IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Functional Description
In the case of the double output units the output voltage is
monitored by a separate transformer winding close to the
secondary windings and fed back to the control circuit. The
R-input is referenced to the primary side and allows pro-
gramming of the output voltage in the range 100 to 105% of
Uo nom by an external resistor or within 75 to 105% of Uo nom
using an external voltage source.
The IMS 7 DC-DC modules are feedback controlled flyback
converters using current mode PWM (Pulse Width Modula-
tion).
In the case of the single output units the output is directly
monitored and fed back to the primary control circuit via a
pulse transformer, resulting in tight regulation of the output
voltage. The R input is referenced to the secondary side
and allows for programming of the output voltages in the
range 75 to 105% of Uo nom using either an external resistor
or an external voltage source.
Current limitation is provided by the primary circuit, thus
limiting the total output current (Io nom for the single and
Io1 nom + Io2 nom for the double output types).
The inhibit input allows remote converter shutdown.
03026
03025
1
3
11
Vi+
i
Vo+
Vo–
1
11
Vi+
Vo1
PWM
(Trim)
R
4
3
10
13
Vo1
Vo2
10
12
PWM
10 nF
i
2 × 2200 pF
1500 V
2
4
Vi–
n.c.
2
12
Vi–
Vo2
13
14
R
14 n.c.
n.c.
2 × 2200 pF, 1500 V
Fig. 1
Block diagram, single output types, standard pinout
Fig. 2
Block diagram, double output types, standard pinout
APR 20, 2006 revised to JUN 05, 2006
Page 3 of 14
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IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Electrical Input Data
General conditions:
– TA = 25°C, unless TC is specified.
– Connector pins i and Vi– interconnected.
– R input not connected.
Table 2: Input Data
Input
24 IMS
48 IMS
Characteristics
Conditions
min
14
typ
max
36
min
36
typ
max
75
Unit
Vi
Input voltage range 1
TA min to TA max
Io = 0...Io nom
V DC
Vi nom
Vi sur
Input voltage (nominal)
24
48
Repetitive surge
voltage
Abs. max input (3 s)
50
100
tstart up
Converter 2
start-up time
switch on
inh. release
Worst case condition at
Vi min and full load
0.25
0.5
0.1
0.25
0.5
0.1
s
trise
Rise time 2
Vi nom, Io = Io nom
resistive load
5
12
5
ms
capacitive load
Io = 0, Vi min to Vi max
for surge calculation
Converter operating
Converter inhibited
Converter operating
Converter inhibited
Vi min to Vi max
12
6
Iio
No load input current
Input capacitance
Inhibit voltage
12
24
12
mA
μF
Ci
Vih
0.8
0.5
–10 to 0.8
–10 ...0.8
V DC
open, 2.4 to Vi max
open, 2.4...Ui max
Iih
Inhibit current
–0.5
1
–0.5
1
mA
Ii ih
Input current
3.0
3.0
if unit inhibited
Iinr p
fs
Peak inrush current 4
Switching frequency
Reflected ripple current
Vi = V nom
4.0
3.9
A
Vi min toVi max, Io = 0 to Io nom
Io = 0 to Io nom
approx. 330
approx. 330
kHz
mApp
Ii rr
40
30
Vi RFI
Input RFI level
EN 55022 3
B
B
conducted and radiated
1 Ui min will not be as stated if Uo is increased above Uo nom by use of the R input pin. If the output voltage is set to a higher value, Ui min
will be proportionally increased.
2 Measured with a resistive or max. admissible capacitive load. (See fig.: Converter start-up and rise time).
3 Measured with a lead lenght of 0.1 m, leads twisted. Double output units with both outputs in parallel.
4 Source impedance according to ETS 300132-2.
5 The level of the switching frequency band varies with the output voltage configuration. (See also fig.: Switching frequency versus input
voltage and load.)
Vo
trise
04008
Vo nom
t
tstart up
Fig. 3
Converter start-up and rise time
APR 20, 2006 revised to JUN 05, 2006
Page 4 of 14
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IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Input Transient Voltage Protection
Reverse Polarity Protection at Input
In many applications transient voltages on the input of the
converter are always possible.These may be caused for ex-
ample be short circuits between Vi+ and Vi– where the net-
work inductance may cause high energy pulses.
The suppressor diode on the input also provides for reverse
polarity protection by conducting current in the reverse di-
rection, thus protecting the unit. An external fuse is required
to limit this current:
– For 24 IMS 7 a fast 2 A (F2A) fuse is recommended.
– For 48 IMS 7 a fast 1 A (F1A) fuse is recommended.
In order to protect the converter a large transient voltage
supressor has been fitted to the input of the IMS7 types.
Specifications as per table below.
Inrush Current
Table 3: Built-in transient voltage suppressor
The inrush current has been kept as low as possible by
choosing a very small input capacitance. A series resistor
may be inserted in the input line to limit this current further.
Type
Breakdown
Voltage
VBR nom
Peak Power
at 1 ms
PP
Peak Pulse
Current
IPP
1 A/Div.
24IMS7
48IMS7
53 V
600 W
600 W
7.7 A
4.1 A
04030
4
100 V
3
2
If transients generating currents above the peak pulse cur-
rent Ipp are possible then an external limiting network such
as the circuit recommended for IEC 801-5, level 2 compli-
ance is necessary.
1
0
To achieve IEC/EN 61000-4-5, level 2 compliance an addi-
tional inductor and capacitor should be provided externally
as shown in the figure below.The components should have
similar characteristics as listed in table 9.
10 μs/Div.
To withstand the 150 V transient according to 19 Pfl 1, appli-
cable for 48 IMS 7 types, the same external circuitry with
similar components as for IEC/EN 61000-4-5, level 2 com-
pliance can be used.
Fig. 6
Typical inrush current at Ui nom, Po nom versus time
(48 IMS 7) measured according to prETS 300132-2 (Ver-
sion 4.3)
04043
L
V+
Vi+
i
+
Module
C
V–
Vi–
Fig. 4
Example for external circuitry to comply with
IEC/EN 61000-4-5, level 2.
Table 4: Components for external circuitry to comply with
IEC/EN 61000-4-5
Circuit Ref.
24IMS7
48IMS7
L
330 μH, 0.42 Ω, 0.6 A
330 μH, 0.42 Ω, 0.6 A
TDK TSL1110-331KR55 TDK TSL1110-331KR55
C
68 μ, 63 V, 85°C
68 μF, 100 V, 85°C
04029
10.5
5
∅ 0.7
Fig. 5
Dimensions for inductor L
APR 20, 2006 revised to JUN 05, 2006
Page 5 of 14
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IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Electrical Output Data
General conditions:
– TA = 25 °C, unless TC is specified.
– Connector pins i (inhibit) and Vi– interconnected.
– R input not connected.
Table 5a: Output data for single output units
Output
Vo nom
3.3 V
5.1 V
12 V
15 V
Characteristics
Conditions
Vi nom
min typ max
min typ max
min typ max
min typ max
Unit
Vo1
Output voltage
3.26
3.34
5.05
5.15 11.82
12.18 14.78
15.22 VDC
Io nom Output current
V min to V max
1.5
1.2
0.6
0.48
A
Io L
Current limit 2
Vi nom, TC = 25°C
3.0
1
2.4
1
1.2
1
1.1
ΔVo U Line and load regulation
Vi min to Vi max
Io = (0.05...1) Io nom
1
%
5
Vo1
Output voltage noise
V min to Vi max
70
70
120
150 mVpp
Io = Io nom
6
20 40
130
20 40
130
25 50
130
30 60
130
Vo clp Output overvoltage
limitation 7
115
115
115
115
%
Co ext Admissible
capacitive load
-2500
-2000
-300
-200
μF
υo d Dynamic Voltage deviat. Vi nom
250
1
250
1
330
1
350
1
mV
ms
1
load
Io nom × / Io nom
2
td
Recovery time
regulat.
αUo Temperature coefficitent
ΔUo/ΔTC (TC min...TC max
Vi min to Vi max
Io = 0 to Io max
0.02
0.02
0.02
0.02
%/K
)
Table 5b: Output data for double output units
Output
Vo nom
2 x 5 V
2 x 12 V
min typ max
5.08 11.82 12.18 14.78
5.08 11.82
2 x 0.7
2 x 15 V
2 x 24 V
min typ max
Characteristics
Conditions
min typ max
min typ max
Unit
Uo1
Uo2
Output voltage
Vi nom
4.92
4.92
15.22 23.64
15.22 23.64
24.36 VDC
24.36
Io = 0.5 Io nom
12.18 14.78
Io nom Output current 1
Vi min to Vi max
2 x 0.3
2 x 0.24
2 x 0.15
A
Io L
Current limit 2, 3
Ui nom, TC = 25°C
2.8
1
1.2
1
1.1
1
0.6
1
DUo U Line regulation
Vi min...Vi max
Io nom
%
ΔVo l Load regulation 4
Vi nom
3
3
3
3
Io = (0,1...1) Io nom
5
6
Vo1, 2 Output voltage noise
Vi min to Vi max
Io = Io nom
80
20 40
130
120
150
30 60
130
240 mVpp
50 100
130
25 50
130
Vo clp Output overvoltage
limitation 7
Minimum load 1% 115
115
115
115
%
Co ext Admissible
capacitive load 3
-2000
-300
-200
-100
μF
Vo d Dynamic Voltage deviat. Vi nom
150
1
330
1
350
1
600
1
mV
ms
1
load
Io nom × / Io nom
2
td
Recovery time
regulat.
αUo Temperature coefficitent
ΔVo/ΔTC (TC min...TC max
Vi min to Vi max
Io = 0 to Io max
0.02
0.02
0.02
0.02
%/K
)
1 Each output is capable of delivering the full output power, Po nom according to table Type survey.
2 The current limit is primary side controlled.
3 Measured with both outputs connected in parallel.
4 Conditions for specified output. Other output loaded with constant current Io = 0.5 Io nom
5 BW = 20 MHz
.
6 Measured with a probe according to EN 61204.
7 The overvoltage protection is not tracking with the R control.
APR 20, 2006 revised to JUN 05, 2006
Page 6 of 14
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Short Circuit Behavior
Connection in Series or in Parallel
The current limit characteristic shuts down the converter
whenever a short circuit is applied to its output. It acts self-
protecting and automatically recovers after removal of the
overload condition (hiccup mode).
Connection in series:
The outputs of single or double output units can be
connected in series without any precautions, taking into
consideration that the highest output voltage should remain
below 60 V for SELV operation.
Thermal Considerations
Connection in parallel:
If a converter, mounted on a PCB, is located in free, quasi-
stationary air (convection cooling) at the indicated
Double outputs of the same converter with equal output
voltage (e.g. 5V / 5V) can be put in parallel and will share
their output currents almost equally. Parallel operation of
single or double outputs of two or more converters with the
same output voltage may cause start-up problems at initial
start-up. This is only advisable in applications where one
converter is able to deliver the full load current as e.g.,
required in true redundant systems.
maximum ambient temperature TA
(see table:
max
Temperature specifications) and is operated at its nominal
input voltage and output power, the case temperature TC
measured at the Measuring point of case temperature TC
(see: Mechanical Data) will approach the indicated value TC
after the warm-up phase. However, the relationship
max
between TA and TC depends heavily on the conditions of
operation and integration into a system. The thermal
conditions are influenced by input voltage, output current,
airflow, temperature of surrounding components and
surfaces and the properties of the printed circuit board.
TA max is therefore only an indicative value and under
practical operating conditions, the ambient temperature TA
may be higher or lower than this value.
Output Overvoltage Protection
The outputs of single output units and -05-05- types are
protected against overvoltages by a second control loop. In
the event of an overvoltage on the output the unit will shut-
down and attempt to restart approximately every 0.4
seconds. Double output units (with exception of the -05-05-
types) are protected against overvoltages by a Zener diode
across the second output. Under worst case conditions the
Zener diode will short circuit. Since with double output units
both outputs track each other the protection diode is only
provided in one of the outputs. The main purpose of this
feature is to protect against possible overvoltages which
could occur due to a failure in the feedback control circuit.
The output overvoltage protection is not designed do
withstand externally applied overvoltages.
Caution: The case temperature TC measured at the
Measuring point of case temperature TC (see: Mechani-
cal Data) may under no circumstances exceed the
specified maximum value.The installer must ensure that
under all operating conditions TC remains within the
limits stated in the table: Temperature specifications.
Typical Performance Curves
Uo [V]
Uo [V]
05086
13
05087
5.5
12
11
10
9
5.0
4.5
4.0
3.5
3.0
8
7
Io total [A]
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
0
0
0.2
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Io [A]
0.4
Fig. 7
Fig. 8
Uo versus Io (typ) of single output units with Uo = 5.1 V.
Uo versus Io (typ) of double output units, with both outputs
in parallel.
Vo1, Vo2 [V]
05039
Uo1 [V]
14
13
05088
13.5
13.0
12
11
10
Vo4
Vo1
12.5
Io2 = 0.03 A
Io2 = 0.3 A
12.0
11.5
11.0
Io1
Io1 nom
[%]
50
75
100
125
150
0
25
0.03
0.10
0.15
0.25
0.35 Io1 [A]
0.05
0.20
Fig. 10
Fig. 9
Flexible load distribution on double outputs (2 x 12 V) with
load variation from 0...150% of Po1 nom on output 1. Output
Uo1 versus Io1 (typ) for various Io2 (2 x 12 V).
The cross load effect is negligible.
2 loaded with 25% of Po2 nom
.
APR 20, 2006 revised to JUN 07, 2006
Page 7 of 14
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IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Efficiency
[%]
05041
Vo [%]
05052
90
overload short circuit condition
switch-off
100
70
Vi nom
Vi max
Vi min
80
70
8
60
50
40
t [ms]
60
60
Po
Po nom
[%]
50
100
25
75
Fig. 11
Fig. 12
Overload switch-off (hiccup mode). Typical values.
Frequency of pulses: 16.5 Hz, puls duration: 8.5 ms
Efficiency versus input voltage and load. Typical values
(48IMS7-12-12).
Auxiliary Functions
Inhibit Function
Adjustable Output Voltage (R input)
The output(s) of the converter may be enabled or disabled
by means of a logic signal (TTL, CMOS, etc.) applied to the
inhibit pin. No output voltage overshoot will occur when the
unit is turned on. If the inhibit function is not required, the
inhibit pin should be connected to Vi– to enable the output
(active low logic, fail safe).
As a standard feature, the IMS7 single and double output
units offer adjustable output voltage(s) by using the control
input R pin. If the R pin is left open circuit the output voltage
is set to Vo nom.The output voltage is adjustable in the range
75 to 105% of Vo nom.The circuit works for single and double
output units in a different way. For output voltages vo >
vo nom, the minimum input voltage Vi min (see: Electrical Input
Converter operating:
Converter inhibited
or inhibit pin left open:
–10 V...0.8 V
Data) increases proportionally to Vo/Vo nom
.
2.4 V...Ui max
Single output units:
06070
The R input is referenced to the secondary side of the con-
verter. Adjustment of the output voltage is possible by
means of either an external resistor or a voltage source.
Vi+
a) Adjustment by means of an external resistor Rext1
:
i
Depending upon the value of the required output voltage,
the resistor shall be connected
Vi–
either: Between the R pin and Vo– to achieve an output
voltage adjustment range of approximately
Vo = 75 to 100% Vo nom. (85...100% for 3.3 V outputs)
Fig. 13
If the inhibit is not used the inhibit pin should be connected
to Vi–
Vo
Rext1 • 4 kΩ • –––––––––
Vo nom – Vo
or: Between the R pin and Vo+ to achieve an output volt-
age range of approximately Vo = 100 to 105% vo nom
.
(vo – 2.5 V)
Rext2 • 4 kΩ • –––––––––––––––––––
APR 20, 2006 revised to JUN 05, 2006
Page 8 of 14
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IMS7 Series Data Sheet, 7-Watt DC-DC Converters
2.5 V • (vo/vo nom – 1)
a) Adjustment by means of an external resistor.
b) Adjustment by means of an external voltage Vext between
Vo– and R pins.
Programming of the output voltage by means of an
external resistor Rext1 is possible within a limited range of
100 to 105% of Vo nom. Rext1 should be connected
between the R-pin and Vi–. Connection of Rext1 to Vi+
may damage the converter.The following table indicates
suitable resistor values for typical output voltages under
nominal conditions (Vi nom, Io = 0.5 Io nom), with either
paralleled outputs or equal load conditions on each
output.
The control voltage range is 1.87 to 2.62 V and allows for
an adjustment in the range of approximately 75 to 105%.
(85 to 105% for 3.3 V outputs)
Vo • 2.5 V
Vext ♠ –––––––––
Vo nom
Attempting to adjust the output below this range will
cause the converter to shutdown (hiccup mode).
Table 6: Rext1 for Vo > Vo nom
approximate values (Ui nom, Io1, 2 = 0.5 Io1/2 nom
;
Note: Applying an external control voltage >2.75 V may
damage the converter.
)
Uo [% Uo nom
]
Rext [kΩ]
06029
L
Vo+
R
105...108 (107 typically)
0
105
104
103
102
101
100
1.5
5.6
12
27
68
Rext2
Vref = 2.5 V
4 kΩ
+
-
control
circuit
Vext
Rext1
Vo-
N
Fig. 14
Output voltage control for single output units by means of
the R-input
b) Adjustment by means of an external voltage source Vext
.
For external output voltage programming in the range 75
to 105% of Vo nom a (0 to 20 V) source Text is required,
connected to the R-pin and Vi–.The table below indicates
typical Vo versus Vext values under nominal conditions (Vi
nom, Io = 0.5 Io nom), with either paralleled outputs or equal
load conditions on each output. Applying a control
voltage >20 V will set the converter into a hiccup mode.
Direct paralleling of the R-pins of units connected in par-
allel is feasible.
Double output units:
The R input (Trim) is referenced to the primary side. The
figure below shows the circuit topology. Adjustment of the
output voltage is possible by means of either an external
resistor in the range of 100 to 105% of Vo nom, or an external
voltage source in the range of 75 to 105% of Vo nom
.
06132
Table 7: Vext for Vo = 75...105% Vo nom
typical values (Vi nom, Io1, 2 = 0.5 Io1/2 nom
;
Vi+
Vo1+
Vo1–
Vo2+
)
R (Trim)
Vo [% VVo nom
]
UVN ext [V]
+
•105
102
95
0
Control
circuit
Uext
Rext
Vi–
1.6
4.5
9
–
Vo2–
85
75
13
Fig. 15
Output voltage control for double output units by means of
the R input
APR 20, 2006 revised to JUN 05, 2006
Page 9 of 14
www.power-one.com
Electromagnetic Compatibility (EMC)
which typically occur in many installations, but especially in
battery-driven mobile applications.
A suppressor diode together with an input filter form an
effective protection against high input transient voltages
Electromagnetic Immunity
Table 8: Immunity type tests
Phenomenon
Standard 1
Class
Level
Coupling
mode 2
Value
applied
Waveform
Source
Imped.
Test
procedure
In
oper. form.
Per- 3
Electrostatic
discharge
to case
IEC/EN
61000-4-2
2
3
2
contact discharge 4000 Vp
R pin open
i pin connec. to Vi–
1/50 ns
330 Ω
10 positive and
10 negative
discharges
yes
B
air discharge
R pin open
i pin connec. to Vi–
8000 Vp
3 V/m
Electromagnetic IEC/EN
field
antenna
AM 80%
1 kHz
26 to 1000 MHz
900 MHz
yes
yes
A
B
61000-4-3
ENV 50204
PM, 50% duty
cycle, 200 Hz
resp. frequ.
Electrical fast
transient/burst
IEC/EN
61000-4-4
3
direct +i/–i
2000 Vp bursts of 5/50 ns 50 Ω
5 kHz rep. rate
1 min positive
1 min negative
transients per
coupling mode
transients with
15 ms burst
duration and a
300 ms period
Surge
IEC/EN
2
2
+i/–i
1000 Vp
3 Vrms
1.2/50 µs
2 Ω
5 pos. and 5 neg.
impulses per
coupling mode
yes
B
61000-4-55
Conducted
disturbancies
IEC/EN
61000-4-6
+i/–i
+i/–i
AM modulated
50 Ω
0.15 to 80 MHz
yes
yes
A
B
(130 dBμV) 80%, 1 kHz
150 Ω
Transient
19 Pfl 1 4
150 Vp 0.1/0.3 ms
limited to
<100 A
3 positive
1 Related and previous standards are referenced in Technical Information: Standards.
2 i = input, o = output.
3 A = normal operation, no deviation from specification, B = temporary deviation from specs. possibe.
4 For 48IMS7 types (additional external components required). Not applicable for 24IMS7 types.
5 External components required.
Electromagnetic Emission
Conducted RFI noise at input according to EN 55022
Radiated RFI noise according to EN 55022.
[dBμV/m]
40
[dBμV]
90
07024
07023
80
35
30
25
20
EN 55022 A
EN 55022 B
70
60
EN 55022 B
50
40
30
20
10
0
15
10
0
[MHz]
MHz
Fig. 17
Typical radio frequency-interference voltage at Vi nom
Io nom, measured with an antenna (distance 10 m). Output
leads 0.1 m, twisted (48 IMS-7-15-15).
,
Fig. 16
Typical disturbance voltage (quasi-peak) at the input
according to CISPR 11/EN 55011 and CISPR 22/EN
55022 measured at Ui nom and Io nom. Output leads 0.1 m,
twisted. (48IMS7-15-15).
APR 20, 2006 revised to JUN 07, 2006
Page 10 of 14
www.power-one.com
IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Immunity to Environmental Conditions
Table 9: Environmental testing
Test Method
Standard
IEC/DIN IEC 60068-2-3
MIL-STD-810D section 507.2 Relative humidity:
Duration:
Test Conditions
Status
Ca
Ea
Eb
Fc
Damp heat
steady state
Temperature:
40 2 °C
%
56 days
Unit not
operating
93 +2/-3
Shock
(half-sinusoidal)
IEC/EN/DIN EN 60068-2-27
MIL-STD-810D section 516.3 Bump duration:
Number of bumps:
Acceleration amplitude:
50 gn = 490 m/s2
11 ms
18 (3 each direction)
Unit
operating
Bump
(half-sinusoidal)
IEC/EN/DIN EN 60068-2-29
MIL-STD-810D section 516.3 Bump duration:
Number of bumps:
Acceleration amplitude:
25 gn = 245 m/s2
11 ms
6000 (1000 each direction)
Unit
operating
Vibration
IEC/EN/DIN EN 60068-2-6
MIL-STD-810D section 514.3
Acceleration amplitude:
0.35 mm (10...60 Hz)
Unit
(sinusoidal)
5 gn = 49 m/s2 (60...2000 Hz) operating
10...2000 Hz
Frequency (1 Oct/min):
Test duration:
7.5 h (2.5 h each axis)
Kb
Salt mist, cyclic
(sodium chloride
NaCl solution)
IEC/EN/DIN IEC 60068-2-52
Concentration:
Duration:
Storage:
Storage duration:
Number of cycles:
5% (30°C)
Unit not
operating
2 h per cycle
40°C, 93% rel. humidity
22 h per cycle
3
Table 10: Temperature specifications, valid for air pressure of 800...1200 hPa (800...1200 mbar)
Temperature
Standard -9
max
Characteristics
Conditions
Operational2
min
–40
–40
–40
Unit
°C
TA
TC
TS
Ambient temperature 1
71
95
Case temperature
Storage temperature 1
Non operational
100
1 MIL-STD-810D section 501.2 and 502.2
2 See Thermal Considerations
Table 11: MTBF
MTBF
Ground Benign
Ground Fixed
Ground Mobile
according to MIL-HDBK-217F
TC = 40°C
1'671'000 h
1'640'000 h
TC = 40°C
248'000 h
214'000 h
TC = 70°C
83'800 h
83'000 h
TC = 50°C
84'800 h
77'000 h
24 IMS 7-05-7
48 IMS 7-15-15-7
APR 20, 2006 revised to JUN 05, 2006
Page 11 of 14
www.power-one.com
Mechanical Data
Dimensions in mm. Tolerances 0.3 mm unless otherwise indicated.
European
Projection
S09030
50.8 (2")
0.8 × 1.2 (0.03 x 0.05") Pins
∅ 1.6 (0.06") PCB holes
3.4 (0.13")
3.81(0.15")
14
1
4
10
4.6 (0.18")
PT 2.2
self tapping screws
3.81(0.15")
45.7 (1.8")
Measuring point
of case temperature TC
0.8 (0.3")
Fig. 18
Standard soldering pins
Weight: <20 g
09032
50.8 (2")
35.5 (1.4")
15.2 (0.6")
∅ 1 (0.04") Pins
∅ 1.2 (0.05") PCB holes
0.5(0.02")
3
4
1
2
5
Measuring point of
case temperature TC
Fig. 19
Case IMX 7 with C pinout (option C) for single output units, pin 4 is not fitted.
Weight: <24 g
159 (6.25")
4.5 (0.18")
7 TE
9 TE
Test jacks
Option P (U
Option D (U
Option D (U
)
o
)
to
ti
)
LED i
LED OK
LED I
oL
Measuring point of
case temperature TC
50 (1.97")
171.93 (6.77") (DIN 41494)
168.5 (6.63")
80 (3.15")
S09002
Fig. 20
Open frame (option Z)
Weight: <20 g
APR 20, 2006 revised to JUN 07, 2006
Page 12 of 14
www.power-one.com
IMS7 Series Data Sheet, 7-Watt DC-DC Converters
Safety and Installation Instructions
Installation Instruction
Installation of the DC-DC converters must strictly follow the
national safety regulations in compliance with the
enclosure, mounting, creepage, clearance, casualty,
markings and segregation requirements of the end-use
application.
Table 12: Electric strength test voltages, clearance and
creepage distances
Characteristic
I/O
1.2
O/O
0.1
0.15
-
Unit
kVrms
kVDC
nF
Electric strength
test voltage 1 s
Connection to the system shall be made via a printed circuit
board according to: Mechanical Data.
1.5
Coupling capacitance
³1.2
>100
The units should be connected to a secondary circuit.
Isulation resistance
at 500 VDC
-
MΩ
Check for hazardous voltages before altering any
connections.
Partial discharge
extinction voltage
Consult
factory
-
kV
Do not open the module.
Ensure that a unit failure (e.g. by an internal short-circuit)
does not result in a hazardous condition. See also:Safety of
operator accessible output circuit.
Table 13: Pin allocation, standard pinout and Option Z
Pin
1
Single output units
Double output units
Input Fuse
Vi+
Vi–
i
Vi+
Vi–
To prevent excessive current flowing through the input
supply line in case of a short-circuit across the converter
input an external fuse should be installed in a non earthed
input supply line. We recommend a fast acting fuse F2A for
24 IMS 7 types and F1A for 48 IMS 7 types.
2
3
i
4
n.c.
Vo–
Vo+
Vo–
R
R (Trim)
Vo1–
Vo1+
Vo2–
Vo2+
n.c.
10
11
12
13
14
Cleaning Agents
In order to avoid possible damage, any penetration of
cleaning fluids has to be prevented, since the power sup-
plies are not hermetically sealed.
n.c.
Standards and approvals
10011
All DC-DC converters are UL recognized according to
UL 1950, UL recognized for Canada to CAN/CSA C22.2 No.
950-95 and LGA approved to IEC/EN 60950 standards.
14
13
12
11
10
1
2
The units have been evaluated for:
• Building in
Bottom view
3
4
• Supplementary insulation input to output, based on their
maximum input voltage
• The use in a pollution degree 2 environment
• Connecting the input to a secondary circuit which is sub-
ject to a maximum transient rating of 1500 V
Fig. 21
Pin allocation standard pinout
Table 14: Pin allocation for C-pinout (option C)
The DC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and ISO 9001 standards.
Pin
1
Single output units
Dual output units
Vi+
Vi–
Vi+
Vi–
2
Protection Degree
3
Vo+
Vo+
Go
The protection degree of the DC-DC converters is IP 30.
4
no pin
Vo–
Isolation
5
Vo–
10012
The electric strength test is performed as factory test in
accordance with IEC/EN 60950 and UL 1950 and should
not be repeated in the field. Power-One will not honor any
guarantee claims resulting from electric strength field tests.
3
4
5
1
2
Fig. 22
Pin allocation C pinout, bottom view
APR 20, 2006 revised to JUN 05, 2006
Page 13 of 14
www.power-one.com
Safety of operator accessible output circuit
If the output circuit of a DC-DC converter is operator
accessible, it shall be a SELV circuit according to IEC/EN
60950 related safety standards
circuit according to IEC/EN 60950 up to a configured output
voltage (sum of nominal voltages if in series or +/–
configuration) of 42 V.
The insulation concept table below shows some possible
installation configurations, compliance with which causes
the output circuit of the DC-DC converter to be an SELV
However, it is the sole responsibility of the installer to
ensure the compliance with the relevant and applicable
safety regulations. More information is given in: Technical
Information: Safety.
Table 15: Insulation concept leading to a SELV output circuit
Conditions Front end
DC-DC converter
Result
Supply
voltage
Minimum required grade
of isolation, to be provided DC output status of the front end
by the AC-DC front end,
including mains supplied
battery charger
Maximum Minimum required safety
Measures to achieve the
specified safety status of the
output circuit
Safety status of
the DC-DC
converter output
circuit
voltage
output circuit
from the
front end 1
Mains
-250 V AC
Basic
-60 V
Earthed SELV circuit 2
ELV circuit
Operational insulation, pro-
vided by the DC-DC converter
SELV circuit
Input fuse 3 output suppressor Earthed SELV
diode(s) 4, and earthed
output circuit(s) 2
circuit
>60 V
-60 V
>60 V
Hazardous voltage
secondary circuit
Double or reinforced
SELV circuit
Operational insulation, pro-
vided by the DC-DC converter
SELV circuit
TNV-2 circuit
Supplementary insulation,
based on the maximum input
voltage, provided by the
DC-DC converter
Double or reinforced insu-
lated unearthed hazardous
voltage secondary circuit 5
1 The front end output voltage should match the specified input voltage range of the DC-DC converter.
2 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
3 The installer shall provide an approved fuse (type with the lowest rating suitable for the application) in a non-earthed input line directly
at the input of the DC-DC converter (see fig. Schematic safety concept). For UL’s purpose, the fuse needs to be UL-listed. See also
Input Fuse.
4 Each suppressor diode should be dimensioned in such a way, that in the case of an insulation fault the diode is able to limit the output
voltage to SELV (<60 V) until the input fuse blows (see fig. Schematic safety concept).
5 Has to be insulated from earth by basic insulation according to the relevant safety standard, based on the maximum output voltage
from the front end.
10004
Fuse
+
~
Mains
Suppressor
diode
AC-DC
front
DC-DC
con-
Battery
SELV
end
verter
–
~
Earth
connection
Earth
connection
Fig. 23
Schematic safety concept. Use fuse, suppressor diode
and earth connection as per table: Safety concept leading
to a SELV output circuit.
Accessories
Description of Options
Mounting supports for chassis and DIN-rail mounting.
Table 16: Survey of options
Option
Function
Characteristics
Z
Open frame version
C-pinout
See mechanical data
See mechanical data
C
Option C
The C-pinout configures the electrically isolated double
outputs to the "industrial pinout" Vo1+, Vo2– with common
ground Go. With the C-pinout the converter height is in-
creased by the adapter PCB (see also: Mechanical Data).
APR 20, 2006 revised to JUN 07, 2006
Page 14 of 14
www.power-one.com
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