Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 1/18
7 Watt DC-DC Converters IMX 7 Series
Wide input voltage ranges up to 150 V DC
1 or 2 outputs up to 48 V DC
1500...2500 V DC I/O electric strength test
• Extremely wide input voltage ranges
• Electrical isolation, also between outputs
• Emissions below EN 55 022 level B.
• Immunity to IEC/EN 61000-4-2, -3, -4, -5 and -6
• High efficiency (typ. 84%)
• Inhibit input, output voltage adjustable
• Flex power: flexible load distribution on outputs
• Outputs no-load, overload and short-circuit proof
• Operating ambient temperature up to –40...85°C
• High reliability and no derating
• 2" × 1" case with 10.5 mm profile
• Supplementary insulation
Safety according to IEC/EN 60950, UL 1950
1For 70/110 IMX types
50.8
2.0"
25.4
1.0"
10.5
0.42"
Summary
The IMX 7 series of board mountable 7 Watt DC-DC con-
verters has been designed according to the latest industry
requirements and standards. The converters are particularly
suitable for use in mobile or stationary applications in trans-
port, railways, industry or telecommunications where vari-
able input voltages or high transient voltages are prevalent.
Covering a total input voltage range from 8.4 V DC up to
150 V DC with four different types the units are available
with single and electrically isolated double outputs allowing
the configuration of output voltages from 3.3 V DC up to
48 V DC externally adjustable, with flexible load distribution
on double output units. An inhibit input allows remote con-
verter on/off.
Features include efficient input and output filtering with un-
surpassed 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 e.g. required in battery supported sys-
tems where the bus voltage may exceed the SELV limit of
60 V DC. They are designed and built according to the inter-
national safety standards IEC/EN 60950, UL 1950, CAN/
CSA C22.2 No.950-95 and are LGA and UL marked. The
70 IMX 7 and 110 IMX 7 types are CE marked.
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 re-
peatability 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 85°C in free air without using any potting material. For
extremely high vibration environments the case has holes
for screw mounting.
Various options as e.g. extended temperature range
–40...85°C, industrial C pinout or SMD pinout provide a
high level of application specific engineering and design-in
flexibility.
Table of Contents Page
Summary .......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key .......................................................................... 3
Functional Description ..................................................... 4
Electrical Input Data ......................................................... 5
Electrical Output Data ...................................................... 7
Page
Auxiliary Functions ......................................................... 10
Electromagnetic Compatibility (EMC) ............................ 12
Immunity to Environmental Conditions .......................... 13
Mechanical Data ............................................................ 14
Safety and Installation Instructions ................................ 15
Description of Options .................................................... 17
LGA
1
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 2/18
Type Survey and Key Data
Table 1: Type survey
Output 1 Output 2 Output Power Input voltage Efficiency Type Options 2
U
o1 nom
I
o1 nom
U
o2 nom
I
o2 nom
P
o nom range htyp designation
[V DC] [A] 1 [V DC] [A] 1 [W] [V DC] [%]
3.3 1.5 - - 5 8.4...36 79 20 IMX 7-03-9 -8, D, M, C, L, Z
3.3 1.5 - - 5 16.8...75 3 81 40 IMX 7-03-9 -8, D, M, C, L, Z
3.3 1.5 - - 5 40...121 79 70 IMX 7-03-9 -8, D, M, L, Z
3.3 1.5 - - 5 60...150 79 110 IMX 7-03-9 -8, D, M, L, Z
5.1 1.2 - - 6.1 8.4...36 80 20 IMX 7-05-9 -8, D, M, C, L, Z
5.1 1.2 - - 6.1 16.8...75 3 81 40 IMX 7-05-9 -8, D, M, C, L, Z
5.1 1.2 - - 6.1 40...121 80 70 IMX 7-05-9 -8, D, M, L, Z
5.1 1.2 - - 6.1 60...150 80 110 IMX 7-05-9 -8, D, M, L, Z
12 0.5 - - 6 8.4...36 84 20 IMX 7-12-9C2 -8, Z
12 0.6 - - 7.2 16.8...75 3 84 40 IMX 7-12-9C2 -8, Z
12 0.6 - - 7.2 40...121 83 70 IMX 7-12-9C2 -8, Z
12 0.6 - - 7.2 60...150 84 110 IMX 7-12-9C2 -8, Z
15 0.4 - - 6 8.4...36 84 20 IMX 7-15-9C2 -8, Z
15 0.48 - - 7.2 16.8...75 3 84 40 IMX 7-15-9C2 -8, Z
15 0.48 - - 7.2 40...121 83 70 IMX 7-15-9C2 -8, Z
15 0.48 - - 7.2 60...150 84 110 IMX 7-15-9C2 -8, Z
24 0.26 - - 6.2 8.4...36 84 20 IMX 7-24-9C2 -8, Z
24 0.3 - - 7.2 16.8...75 3 84 40 IMX 7-24-9C2 -8, Z
24 0.3 - - 7.2 40...121 83 70 IMX 7-24-9C2 -8, Z
24 0.3 - - 7.2 60...150 84 110 IMX 7-24-9C2 -8, Z
5 0.6 5 0.6 6 8.4...36 82 20 IMX 7-05-05-9 -8, M, C, L, Z
5 0.7 5 0.7 7 16.8...75 3 83 40 IMX 7-05-05-9 -8, M, C, L, Z
5 0.7 5 0.7 7 40...121 82 70 IMX 7-05-05-9 -8, M, L, Z
5 0.7 5 0.7 7 60...150 82 110 IMX 7-05-05-9 -8, M, L, Z
12 0.25 12 0.25 6 8.4...36 84 20 IMX 7-12-12-9 -8, M, C, L, Z
12 0.3 12 0.3 7.2 16.8...75 3 84 40 IMX 7-12-12-9 -8, M, C, L, Z
12 0.3 12 0.3 7.2 40...121 83 70 IMX 7-12-12-9 -8, M, L, Z
12 0.3 12 0.3 7.2 60...150 84 110 IMX 7-12-12-9 -8, M, L, Z
15 0.2 15 0.2 6 8.4...36 84 20 IMX 7-15-15-9 -8, M, C, L, Z
15 0.24 15 0.24 7.2 16.8...75 3 84 40 IMX 7-15-15-9 -8, M, C, L, Z
15 0.24 15 0.24 7.2 40...121 83 70 IMX 7-15-15-9 -8, M, L, Z
15 0.24 15 0.24 7.2 60...150 84 110 IMX 7-15-15-9 -8, M, L, Z
24 0.13 24 0.13 6.2 8.4...36 84 20 IMX 7-24-24-9 -8, M, C, L, Z
24 0.15 24 0.15 7.2 16.8...75 3 84 40 IMX 7-24-24-9 -8, M, C, L, Z
24 0.15 24 0.15 7.2 40...121 83 70 IMX 7-24-24-9 -8, M, L, Z
24 0.15 24 0.15 7.2 60...150 84 110 IMX 7-24-24-9 -8, M, L, Z
1Flexible load distribution on double outputs possible.
2See table:
Survey of options
.
3Operation at lower input voltage possible:
P
o approx. 80% of
P
o nom at
U
i min = 14.4 V.
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 3/18
Type Key
20 IMX 7 - 05 - 05 -9 D M C L Z
Input voltage range
U
i
8.4...36 V DC ............................................ 20
16.8...75 V DC ............................................ 40
40...121 V DC ............................................ 70
60...150 V DC .......................................... 110
Series ........................................................................ IMX 7
Output voltage type output 1 .................. 03, 05, 12, 15, 24
Dash: Designates double output unit with two
independent electrically isolated outputs ...... - 1
Output voltage type output 2 ........................ 05, 12, 15, 24
Operating ambient temperature range
T
A
–40...71°C .................................................. -9
–40...85°C (option) ..................................... -8 2 4
Options: Signal Out OK ............................................. D 2 4
Surface mount version with pins ................. M 3 4
C-pinout ...................................................... C 3 4
Surface mount version with PCB lid ............ L
Open frame .................................................. Z
1Not applicable for option C. 3Option M excludes option C and vice versa.
2Option -8 excludes option D and vice versa. 4For delivery lead times contact factory. Some types require a minimum order quantity.
Examples: 40 IMX 7-05-05-9M: DC-DC converter, input voltage range 16.8...75 V, 2 electrically isolated outputs each
providing 5 V, 700 mA, surface mount version.
20 IMX 7-0505-9C: DC-DC converter, input voltage range 8.4...36 V, C pinout with outputs ±5 V, 600 mA.
20 IMX 7-12-9C2: DC-DC converter, input voltage range 8.4...36 V, C pinout with one output 12 V, 500 mA.
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 4/18
Functional Description
The IMX 7 DC-DC modules are feedback controlled flyback
converters using current mode PWM (Pulse Width Modula-
tion). See block diagram for single and double output types.
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
U
o nom using either an external resistor
or an external voltage source.
In the case of the dual and 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 (Trim) input is referenced to the primary side
and allows programming of the output voltage in the range
100 to 105% of
U
o nom by an external resistor or within 75 to
105% of
U
o nom using an external voltage source.
Current limitation is provided by the primary circuit, thus
limiting the total output power.
The inhibit input allows remote converter on/off.
PWM
2 × 2200 pF
10 nF
14
1
2
3
4
11
10
12
13
Vi+
(Trim) R
i
Vi–
Vo1+
Vo1–
Vo2+
Vo2–
n.c.
03042
Fig. 2
Block diagram, double output types, standard pinout
Fig. 1
Block diagram, single output types, standard pinout
PWM
2 × 2200 pF
13
1
2
3
4
11
10
12
14
Vi+
i
Vi–
n.c.
Vo+
Vo–
R
D
03041
PWM
2 × 2200 pF
1
2
3
5
Vi+
Vi–
Vo+
Vo –
03062
PWM
2 × 2200 pF
10 nF
1
2
3
10
5
Vi+
Vi–
Vo+
Go
Vo –
03063
Fig. 4
Block diagram, dual output types, C pinout
Fig. 3
Block diagram, single output types, C pinout
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 5/18
Electrical Input Data
General conditions:
–T
A = 25°C, unless
T
C is specified.
–Connector pins i and Vi– interconnected.
–Trim or R input not connected.
Table 2: Input Data
Input 20 IMX 7 40 IMX 7 70 IMX 7 110 IMX 7
Characteristics Conditions min typ max min typ max min typ max min typ max Unit
U
iInput voltage range 1
T
C min...
T
C max 8.4 36 16.8 6 75 40 121 60 150 V DC
U
i nom Nominal input voltage
I
o = 0...
I
o nom 20 40 70 110
U
i sur Repetitive surge abs. max input (3 s) 100
voltage 150 V 50 5 4 4 4
t
start up Converter 2 switch on Worst case condition at 0.25 0.5 0.25 0.5 0.25 0.5 0.25 0.5 s
start-up time inh. release
U
i min and full load 0.1 0.1 0.1 0.1
t
rise Rise time 2
U
i nom resistive load 5 5 5 5 ms
I
o nom capacitive load 12 12 12 12
I
i o No load input current
I
o = 0,
U
i min...
U
i max 15 30 8 15 8 15 8 15 mA
C
iInput capacitance for surge calculation 4.7 0.5 0.2 0.2 µF
U
inh Inhibit voltage unit operating –10...0.8 –10 ...0.8 –10 ...0.8 –10 ...0.8 V DC
unit inhibited open or open or open or open or
2.4...
U
i max 2.4...
U
i max 2.4...75 2.4...75
I
inh Inhibit current unit operating –0.5 –0.5 –0.5 –0.5 mA
unit inhibited 1 1 1 1
I
i inh Input current
U
i min...
U
i max <3.0 <3.0 <3.0 <3.0
if unit shut down
I
inr p Inrush peak current
U
i =
U
i nom 7 3.8 3.7 4.2 5.6 A
f
sSwitching frequency
U
i min...
U
i max,
I
o = 0...
I
o nom approx. 400 approx. 400 approx. 400 approx. 300 kHz
I
i rr Reflected
I
o = 0...
I
o nom 50 30 20 10 mApp
ripple current
u
i RFI Input RFI level EN 55022 3 BBBB
conducted and radiated
1
U
i min will not be as stated if
U
o is increased above
U
o nom by use of the R input. If the output voltage is set to a higher value,
U
i min will be proportionally increased.
2Measured with a resistive and max. admissible capacitive load.
3Measured with a lead lenght of 0.1 m, leads twisted. Double output units with both outputs in parallel. 70/110 IMX 7 types need an
external capacitor at the input. (e.g. 1µF film or ceramic)
4See 19 Pfl 1:
Electromagnetic Immunity
.
5The DC-DC converter shuts down automatically at approx. 38 V.
6Operation at lower input voltage possible:
P
o approx. 80% of
P
o nom at
U
i min = 14.4 V.
7Source impedance according to prETS 300132-2, version 4.3, at
U
i nom.
U
o nom
U
o
t
start up
t
rise
t
04008
Fig. 5
Converter start-up and rise time
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 6/18
Input Transient Voltage Protection
In many applications transient voltages on the input of the
converter are always possible. These may be caused for ex-
ample by short circuits between Vi+ and Vi– where the net-
work inductance may cause high energy pulses.
In order to protect the converters the IMX 7 types have a
built-in transient protection as per table below:
Reverse Polarity Protection at Input
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 20 IMX 7 a fast 2 A (F2A) fuse is recommended.
– For 40 IMX 7 a fast 1 A (F1A) fuse is recommended.
– For 70 IMX 7 a fast 0.63 A (F.63A) fuse is recommended.
– For 110 IMX 7 a fast 0.63 A (F.63A) fuse is recommended.
Inrush Current
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.
Vi+
Vi–
07064
C
L
D
+i
Fig. 6
Example for external circuitry to comply with
IEC/EN 61000-4-5, level 2 (transzorb D not necessary for
40/70/110 IMX 7 types).
Table 3: Built-in transient voltage suppressor
Type Breakdown Peak Power Peak Pulse
Voltage at 1 ms Current
VBR nom
P
P
I
PP
20 IMX 7 1 over voltage lockout at approx. 38 V
40 IMX 7 2 100 V 1500 W 11 A
70 IMX 7 2 144 V 600 W 2.9 A
110 IMX 7 2 167 V 600 W 2.5 A
1The built-in overvoltage lockout circuit shuts down the converter
at approx. 38 V protecting the input up to 50 V DC. For higher
transient voltages an external suppressor or voltage limiting
circuit as e.g. for IEC/EN 61000-4-5, level 2 compliance should
be provided.
2If transients generating currents above the peak pulse current
are possible then an external limiting network such as the circuit
recommended for IEC/EN 61000-4-5, level 2 compliance is
necessary.
Table 4: Components for external circuitry to comply with IEC/EN 61000-4-5
Circuit Ref. 20 IMX 7 40 IMX 7 70 IMX 7 110 IMX 7
L 330 µH, 0,115 Ω, 1 A 330 µH, 0,42 Ω, 600 mA 1000 µH, 2.9 Ω, 290 mA 330 µH, 0.65 Ω, 430 mA
TDK SF-T8-110S-01 TDK TSL1110-331KR55 Toko 822LY-102K Toko 822LY-331K
C 68 µF, 63 V, 85°C 68 µF, 100 V, 85°C 47 µF, 150 V, 85°C 200 µF, 200 V, 105°C
D Motorola 1.5KE39A n.a. n.a. n.a.
Fig. 7
Dimensions of inductor L.
(TDK SF-T8-110S-01)
8.5
5
7.5
5
∅ 0.7
04032
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:
Components for
external circuitry to comply with IEC/EN 61000-4-5
.
Please note: The suppressor diode D is only necessary for
20 IMX 7 types. To withstand 150 V transients according to
19 Pfl 1, applicable for 40 IMX 7 types, the same external
circuitry with similar components as for IEC/EN 61000-4-5,
level 2 compliance can be used.
11.5
5
10.5
5
∅ 0.7
04029
25
10
17.5
04033
Fig. 8
Dimensions of inductor L.
(TDK TSL1110-331KR55)
Fig. 9
Dimensions of inductor L.
(Toko R622LY-102K)
1 A/Div.
10 µs/Div.
04030
0
1
2
3
4
Fig. 10
Typical inrush current at U
i nom
, P
o nom
vs. time (40 IMX 7)
measured according to prETS 300132-2 (Version 4.3)
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 7/18
Electrical Output Data
General conditions:
–T
A = 25°C, unless
T
C is specified.
–Connector pins i and Vi– interconnected.
–Trim or R input not connected.
Table 5a: Output data for single output units
Output
U
o nom 3.3 V 5.1 V
Characteristics Conditions min typ max min typ max Unit
U
o1 Output voltage
U
i nom 3.28 3.32 5.07 5.13 VDC
I
o nom Output current
U
i min...
U
i max 1.5 1.2 A
I
o L Current limit 2
U
i nom,
T
C = 25°C 3.0 2.4
D
U
o U Line and load regulation
U
i min...
U
i max
I
o = (0.05...1)
I
o nom ±1±1%
u
o1, 2 Output voltage noise
U
i min...
U
i max 570 70 mVpp
20/40/70 IMX
I
o =
I
o nom 620 40 20 40
110 IMX 40 50 40 50
U
o clp Output overvoltage 115 130 115 130 %
limitation 7
C
o ext Admissible capacitive load ≤2500 ≤2000 µF
u
o d Dynamic Voltage deviat.
U
i nom ±250 ±250 mV
t
dload Recovery time
I
o nom ↔ 1/2
I
o nom 11ms
regulat
aUo Temperature coefficient
U
i min...
U
i max
D
U
o/D
T
C (
T
C min...
T
C max)
I
o = 0...
I
o max ±0.02 ±0.02 %/K
Table 5b: Output data for single output units
Output
U
o nom 12 V 15 V 24 V
Characteristics Conditions min typ max min typ max min typ max Unit
U
o1 Output voltage
U
i nom 11.90 12.10 14.88 15.12 23.81 24.19 VDC
I
o nom Output 20 IMX
U
i min...
U
i max 0.5 0.4 0.26 A
current 140/70/110 IMX 0.6 0.48 0.3
I
o L Current 20 IMX
U
i nom,
T
C = 25°C 1.0 0.95 0.5
limit 2, 3 40/70/110 IMX 1.2 1.1 0.6
D
U
o U Line regulation
U
i min...
U
i max,
I
o nom ±1±1±1%
D
U
o l Load regulation 4
U
i nom ±3±3±3
I
o = (0.1...1)
I
o nom
u
o1, 2 Output voltage noise
U
i min...
U
i max 5120 150 240 mVpp
I
o =
I
o nom 625 50 30 60 50 100
U
o clp Output overvoltage limit. 7 Minimum load 1% 115 130 115 130 115 130 %
C
o ext Admissible ≤300 ≤200 ≤100 µF
capacitive load 3
u
o d Dynamic Voltage deviat.
U
i nom ±330 ±350 ±600 mV
t
dload Recovery time
I
o nom ↔ 1/2
I
o nom 111ms
regulat.
aUo Temperature coefficient
U
i min...
U
i max
D
U
o/D
T
C (
T
C min...
T
C max)
I
o = 0...
I
o max ±0.02 ±0.02 ±0.02 %/K
1Each output is capable of delivering full output power,
P
o nom according to table:
Type Survey
.
2The current limit is primary side controlled.
3Measured with both outputs connected in parallel.
4Conditions for specified output. Other output loaded with constant current
I
o = 0.5
I
o nom.
5BW = 20 MHz
6Measured with a probe according to EN 61204.
7The overvoltage protection is not tracking with the R control.
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 8/18
Table 5c: Output data for double output units
Output
U
o nom 2 × 5 V 2 × 12 V 2 × 15 V 2 × 24 V
Characteristics Conditions min typ max min typ max min typ max min typ max Unit
U
o1 Output voltage
U
i nom 4.96 5.04 11.90 12.10 14.88 15.12 23.81 24.19 VDC
U
o2
I
o = 0.5
I
o nom 4.95 5.05 11.88 12.12 14.85 15.15 23.75 24.25
I
o nom Output 20 IMX
U
i min...
U
i max 2 × 0.6 2 × 0.25 2 × 0.2 2 × 0.13 A
current 140/70/110 IMX 2 × 0.7 2 × 0.3 2 × 0.24 2 × 0.15
I
o L Current 20 IMX
U
i nom,
T
C = 25°C 2.4 1.0 0.95 0.5
limit 2, 3 40/70/110 IMX 2.8 1.2 1.1 0.6
D
U
o U Line regulation
U
i min...
U
i max,
I
o nom ±1±1±1±1%
D
U
o l Load regulation 4
U
i nom ±3±3±3±3
I
o = (0.1...1)
I
o nom
u
o1, 2 Output voltage noise
U
i min...
U
i max 580 120 150 240 mVpp
I
o =
I
o nom 620 40 25 50 30 60 50 100
U
o clp Output overvoltage limit. 7 Minimum load 1% 115 130 115 130 115 130 115 130 %
C
o ext Admissible ≤2000 ≤300 ≤200 ≤100 µF
capacitive load 3
u
o d Dynamic Voltage deviat.
U
i nom ±150 ±330 ±350 ±600 mV
t
dload Recovery time
I
o nom ↔ 1/2
I
o nom 1111ms
regulat.
aUo Temperature coefficient
U
i min...
U
i max
D
U
o/D
T
C (
T
C min...
T
C max)
I
o = 0...
I
o max ±0.02 ±0.02 ±0.02 ±0.02 %/K
1Each output is capable of delivering full output power,
P
o nom according to table:
Type Survey
.
2The current limit is primary side controlled.
3Measured with both outputs connected in parallel.
4Conditions for specified output. Other output loaded with constant current
I
o = 0.5
I
o nom.
5BW = 20 MHz
6Measured with a probe according to EN 61204.
7The overvoltage protection is not tracking with the R control.
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 9/18
Short Circuit Behaviour
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).
Thermal Considerations
If a converter, mounted on a pcb, is located in free, quasi-
stationary air (convection cooling) at the indicated maxi-
mum ambient temperature
T
A max (see table:
Temperature
specifications)
and is operated at its nominal input voltage
and output power, the case temperature
T
C measured at the
Measuring point of case temperature T
C
(see:
Mechanical
Data
) will approach the indicated value
T
C max after the
warm-up phase. However, the relationship between
T
A and
T
C depends heavily on the conditions of operation and inte-
gration into a system. The thermal conditions are influenced
by input voltage, output current, airflow, temperature of sur-
rounding components and surfaces and the properties of
the printed circuit board.
T
A max is therefore only an indica-
tive value and under practical operating conditions, the am-
bient temperature
T
A may be higher or lower than this value.
Caution: The case temperature
T
C measured at the
Measuring point of case temperature T
C
(see:
Mechani-
cal Data
) may under no circumstances exceed the speci-
fied maximum value. The installer must ensure that un-
der all operating conditions
T
C remains within the limits
stated in the table:
Temperature specifications.
Connection in Series or in Parallel
Connection in series:
The outputs of single or double output units can be con-
nected in series without any precautions, taking into consid-
eration that the highest output voltage should remain below
60 V for SELV operation.
Connection in parallel:
The outputs of one or several double output units with equal
nominal voltage can be connected in parallel. Approximate
current sharing between 2 or several units is ensured by
their load dependent output characteristic.
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 sec-
onds. 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 fea-
ture 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 to withstand
externally applied overvoltages.
Fig. 13
U
o1
versus I
o1
(typ) for various I
o2
(2
×
12 V).
The cross load effect is negligible.
Fig. 11
U
o
versus I
o
(typ) of single output units with U
o
= 5.1 V.
Fig. 12
U
o
versus I
o
(typ) of double output units, with both outputs
in parallel.
7
8
9
10
11
12
13
U
o
[V]
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 I
o total
[A]
0
05086
5.5
5.0
4.5
4.0
3.5
3.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 I
o
[A]
U
o
[V]
05087
U
o1
, U
o4
[V]
I
o1
I
o1 nom
05039
14
13
12
11
10 025
50 75 100 150 [%]
U
o4
U
o1
125
Fig. 14
Flexible load distribution on double outputs (2
×
12 V) with
load variation from 0...150% of P
o1 nom
on output 1. Output
2 loaded with 25% of P
o2 nom
.
Typical Performance Curves
11.0
11.5
12.0
12.5
13.0
13.5
U
o1 [V]
0.03 0.10 0.15 0.20 0.25 0.35
I
o1 [A]
0.05
05088
I
o2 = 0.3 A
I
o2 = 0.03 A
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 10/18
70
100
U
o [%]
t
[ms]
05041
8.5
60.5
60.5
overload short circuit condition
switch-off
40
50
60
70
80
90
h [%]
05052
25 50 75 100 P
o
P
o nom
[%]
U
i nom
U
i max
U
i min
Fig. 15
Overload switch-off (hiccup mode). Typical values.
Frequency of pulses: 16.5 Hz, puls duration: 8.5 ms.
Fig. 16
Efficiency versus input voltage and load. Typical values
(40 IMX 7-12-12).
Adjustable Output Voltage (R input)
As a standard feature, the IMX 7 single and double output
units offer adjustable output voltage(s) by using the control
input R. If the R pin is left open circuit the output voltage is
set to
U
o nom. The output voltage is adjustable in the range
75...105% of
U
o nom.The circuit works for single and double
output units in a different way. For output voltages
U
o >
U
o nom, the minimum input voltage
U
i min (see:
Electrical In-
put Data
) increases proportionally to
U
o/
U
o nom.
Single output units:
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.
a) Adjustment by means of an external resistor
R
ext1:
Depending upon the value of the required output voltage,
the resistor shall be connected
either: Between the R pin and Vo– to achieve an output
voltage adjustment range of approximately
U
o = 75...100 %
U
o nom. (85...100% for 3.3 V outputs)
U
o
R
ext1 ≈ 4 kΩ • –––––––––
U
o nom –
U
o
or: Between the R pin and Vo+ to achieve an output volt-
age range of approximately
U
o = 100...105%
U
o nom.
(
U
o – 2.5 V)
Rext
2 ≈ 4 kΩ • –––––––––––––––––––
2.5 V • (
U
o/
U
o nom – 1)
Auxiliary Functions
Inhibit Function
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).
Converter operating: –10 V...0.8 V
Converter inhibited
or inhibit pin left open: 2.4 V...
U
i max
(<75 V for 70/110 IMX 7)
Fig. 17
If the inhibit is not used the inhibit pin should be con-
nected to Vi–
Vi+
Vi–
i
06070
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 11/18
R
Vo+
Vo–
+
Uext
–
4 kΩU
ref
2.5 V
control
circuit
Vi+
Vi–
Rext1
Rext2
06029
Fig. 18
Output voltage control for single output units by means of
the R-input
Double output units:
The R input (Trim) input 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 exter-
nal resistor in the range of 100...105% of
U
o nom, or an ex-
ternal voltage source in the range of 75...105% of
U
o nom.
R (Trim)
Vo1+
Vo2–
+
Uext
–
Vi+
Vi–
Rext
Vo1–
Vo2+
06030
Control
circuit
U
ref
2.5 V
Fig. 19
Output voltage control for double output units by means of
the R input
a) Adjustment by means of an external resistor.
Programming of the output voltage by means of an exter-
nal resistor
R
ext1 is possible within a limited range of
100...105% of
U
o nom.
R
ext1 should be connected between
the R-pin and Vi–. Connection of
R
ext1 to Vi+ may dam-
age the converter. The following table indicates suitable
resistor values for typical output voltages under nominal
conditions (
U
i nom,
I
o = 0.5
I
o nom), with either paralleled
outputs or equal load conditions on each output.
b) Adjustment by means of an external voltage source
U
ext.
For external output voltage programming in the range
75...105% of
U
o nom a (0...20 V) source
U
ext is required,
connected to the R-pin and Vi–. The table below indi-
cates typical
U
o versus
U
ext values under nominal condi-
tions (
U
i nom,
I
o = 0.5
I
o nom), with either paralleled outputs
or equal load conditions on each output. Applying a con-
trol voltage greater than 20 V will set the converter into a
hiccup mode. Direct paralleling of the R-pins of units con-
nected in parallel is feasible.
Table 7: U
ext
for U
o
= 75...105% U
o nom
;
typical values (U
i nom
, I
o1, 2
= 0.5 I
o1/2 nom
)
U
o [%
U
o nom]
U
ext [V]
≥105 0
102 1.6
95 4.5
85 9
75 13
b) Adjustment by means of an external voltage
U
ext be-
tween Vo– and R pins.
The control voltage range is 1.87...2.62 V and allows for
an adjustment in the range of approximately 75...105%.
(85...105% for 3.3 V outputs)
U
o • 2.5 V
U
ext ≈ –––––––––
U
o nom
Attempting to adjust the output below this range will
cause the converter to shutdown (hiccup mode).
Note: Applying an external control voltage >2.75 V may
damage the converter.
Table 6: R
ext1
for U
o
> U
o nom
;
approximate values (U
i nom
, I
o1, 2
= 0.5 I
o1/2 nom
)
U
o [%
U
o nom]
R
ext [kΩ]
105...108 (107 typically) 0
105 1.5
104 5.6
103 12
102 27
101 68
100 ∞
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 12/18
07023
EN 55022 A
EN 55022 B
90
80
70
60
50
40
30
20
10
0
0
.01
0
.05
0.1
0.5
1
2
5
10
20
30
[dBµV]
MHz
0
.02
40
35
30
25
20
15
10
0
30
40
50
100
200
300
1000
60
80
[MHz]
EN 55022 B
[dBµV/m]
400
500
600
800
07024
Electromagnetic Emission
Conducted RFI noise at input according to EN 55022 Radiated RFI noise according to EN 55022.
Electromagnetic Immunity
Table 8: Immunity type tests
Phenomenon Standard 1 Class Coupling Value Waveform Source Test In Per- 3
Level mode 2 applied Imped. procedure oper. form.
Electrostatic IEC/EN 2 contact discharge 4000 Vp1/50 ns 330 Ω10 positive and yes B
discharge 61000-4-2 R pin open 10 negative
to case i pin connec. to Vi–discharges
3 air discharge 8000 Vp
R pin open
i pin connec. to Vi–
Electromagnetic IEC/EN 3 antenna 10 V/m AM 80% 26…1000 MHz yes A
field 61000-4-3 1 kHz
ENV 50204 PM, 50% duty 900 MHz
cycle, 200 Hz
resp. frequ.
Electrical fast IEC/EN 4 direct +i/–i 4000 Vpbursts of 5/50 ns 50 Ω1 min positive yes B
transient/burst 61000-4-4 5 kHz rep. rate 1 min negative
transients with transients per
15 ms burst coupling mode
duration and a
300 ms period
Surge IEC/EN 3 +i/–i 2000 Vp1.2/50 µs2 Ω5 pos. and 5 neg. yes B
61000-4-5 5 impulses per
coupling mode
Conducted IEC/EN 3 +i/–i 10 Vrms AM modulated 50 Ω0.15...80 MHz yes A
disturbancies 61000-4-6 (140 dBµV) 80%, 1 kHz 150 Ω
Transient 19 Pfl 1 4 +i/–i 150 Vp0.1/0.3 ms limited to 3 positive yes B
<100 A
1Related and previous standards are referenced in:
Technical Information: Standards
.2i = input, o = output.
3A = normal operation, no deviation from specification, B = temporary deviation from specs. possibe.
4For 40 IMX 7 types (additional external components required). Not applicable for 20 IMX 7 types. 5External components required.
which typically occur in many installations, but especially in
battery driven mobile applications.
Electromagnetic Compatibility (EMC)
A suppressor diode together with an input filter form an ef-
fective protection against high input transient voltages
Fig. 20
Typical disturbance voltage (quasi-peak) at the input ac-
cording to CISPR 11/EN 55011 and CISPR 22/EN 55022
measured at U
i nom
and I
o nom
. Output leads 0.1 m, twisted.
(40 IMX 7-15-15). External capacitor (1
µ
F ceramic or
film) required at the input for 70 IMX 7, 110 IMX 7 types.
Fig. 21
Typical radio frequency-interference voltage at U
i nom
,
I
o nom
, measured with an antenna (distance 10 m). Output
leads 0.1 m, twisted (70 IMX-7-15-15).
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 13/18
Immunity to Environmental Conditions
Table 9: Environmental testing
Test Method Standard Test Conditions Status
Ca Damp heat IEC/DIN IEC 60068-2-3 Temperature: 40 ±2 °C Unit not
steady state MIL-STD-810D section 507.2 Relative humidity: 93 +2/-3 % operating
Duration: 56 days
Ea Shock IEC/EN/DIN EN 60068-2-27 Acceleration amplitude: 100 gn = 981 m/s2Unit
(half-sinusoidal) MIL-STD-810D section 516.3 Bump duration: 6 ms operating
Number of bumps: 18 (3 each direction)
Eb Bump IEC/EN/DIN EN 60068-2-29 Acceleration amplitude: 40 gn = 392 m/s2Unit
(half-sinusoidal) MIL-STD-810D section 516.3 Bump duration: 6 ms operating
Number of bumps: 6000 (1000 each direction)
Fc Vibration IEC/EN/DIN EN 60068-2-6 Acceleration amplitude: 0.35 mm (10...60 Hz) Unit
(sinusoidal) 5 gn = 49 m/s2 (60...2000 Hz) operating
Frequency (1 Oct/min): 10...2000 Hz
Test duration: 7.5 h (2.5 h each axis)
Fh Vibration, IEC/EN 60068-2-64 Acceleration spectral density: 0.05 gn2/Hz Unit
broad-band MIL-STD-810D section 514.3 Frequency band: 20...500 Hz operating
random Acceleration magnitude: 4.9 gn rms
(digital control) Test duration: 3 h (1 h each axis)
Kb Salt mist, cyclic IEC/EN/DIN IEC 60068-2-52 Concentration: 5% (30°C) Unit not
(sodium chloride Duration: 2 h per cycle operating
NaCl solution) Storage: 40°C, 93% rel. humidity
Storage duration: 22 h per cycle
Number of cycles: 3
Table 10: Temperature specifications, valid for air pressure of 800...1200 hPa (800...1200 mbar)
Temperature Standard -9 Option -8
Characteristics Conditions min max min max Unit
T
AAmbient temperature 1 Operational 2 –40 71 –40 85 °C
T
CCase temperature –40 95 –40 105
T
SStorage temperature 1 Non operational –40 100 –55 105
1MIL-STD-810D section 501.2 and 502.2
2See:
Thermal Considerations
Table 11: MTBF and device hours
MTBF Ground Benign Ground Fixed Ground Mobile
MTBF acc. to MIL-HDBK-217F
T
C = 40°C
T
C = 40°C
T
C = 70°C
T
C = 50°C
40 IMX 7-05-7 1'671'700 h 248'000 h 83'800 h 84'800 h
40 IMX 7-15-15-7 1'640'000 h 214'000 h 83'000 h 77'000 h
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 14/18
Mechanical Data
Dimensions in mm. Tolerances ±0.3 mm unless otherwise indicated.
Fig. 22
Case IMX 7 with standard soldering pins
Weight: <20 g
Fig. 23
Case IMX 7 with C pinout (option C) for double output units, pins 6 and 7 are not fitted.
With single output units pins 4, 6 and 7 are not fitted.
Weight: <24 g
50.8 (2")
3.81(0.15")
3.81(0.15")
3.81(0.15")
5 x 3.81
(0.15")
20.3 (0.8")
3 x 5.08 (0.2")
PT 2.2
self tapping screws
1
410
14
0.8 × 1.2 (0.03 x 0.05") Pins
∅ 1.6 (0.06) PCB holes
10.5
(0.41")
3.4 (0.13")
45.7 (1.8")
25.4 (1")
4.6 (0.18")
S09030
Measuring point
of case temperature
T
C
09032
3.4 (0.13")
35.5 (1.4")
15.2 (0.6")
25.4 (1")
5.8 (0.2")
1
2
3
4
5
∅ 1 (0.04") Pins
∅ 1.2 (0.05") PCB holes
0.5(0.02")
50.8 (2")
Measuring point of
case temperature
T
C
12.5
(0.49")
20.3 (0.8")
European
Projection
Fig. 24
Open frame (option Z)
Weight: <20 g
43.2 (1.7")
S90002
48 (1.9")
5 x 3.81
(0.15")
1.27 (0.05")
23 (0.9")
8.25
(0.32")
3 x 5.08
(0.2")
1
410
14
3.5 (0.14")
1.2 (0.5")
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 15/18
90001
25.4 (1")
50.8 (2")
Measuring point of
case temperature
T
C
10.5
(0.41")
1
Fig. 26
Surface mount version with PCB lid (option L)
Weight: <20 g
Safety and Installation Instructions
Installation Instruction
Installation of the DC-DC converters must strictly follow the
national safety regulations in compliance with the enclo-
sure, mounting, creepage, clearance, casualty, markings
and segregation requirements of the end-use application.
Connection to the system shall be made via a printed circuit
board according to:
Mechanical Data
.
The units should be connected to a secondary circuit.
Check for hazardous voltages before altering any connec-
tions.
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.
Input Fuse
To prevent excessive current flowing through the input sup-
ply 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
20 IMX 7 and F1A for 40 IMX 7 and F0.63A for 70/110 IMX
7 types.
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.
Standards and approvals
All DC-DC converters are pending to be 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.
The units have been evaluated for:
•Building in
•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 for 20/40
IMX 7, 2000 V for 70 IMX 7 and 2500 V for 110 IMX 7
types.
The DC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and ISO 9001 standards.
Protection Degree
The protection degree of the DC-DC converters is IP 30.
Fig. 25
Surface mount version with pins (option M)
Weight: <20 g
4.2 (0.17")
42.4 (1.67")
S09031
50.8 (2")
3.81(0.15")
5 x 3.81
(0.15")
3 x 5.08 (0.2")
0.8 × 1.2 (0.03 x 0.05") Pins
25.4 (1")
Measuring point of
case temperature
T
C
11.0
(0.43")
1
410
14
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 16/18
Fig. 25
Pin allocation standard pinout
1
2
3
4
5
10012
Bottom view
1
410
14
10011
2
311
12
13
Isolation
The electric strength test is performed as factory test in ac-
cordance with IEC/EN 60950 and UL 1950 and should not
be repeated in the field. Power-One will not honour any
guarantee claims resulting from electric strength field tests.
Table 12: Electric strength test voltages
Characteristic I/O O/O Unit
20/40 IMX 70 IMX 110 IMX
Electric strength 1.2 1.5 2.0 0.1 kVrms
test voltage 1 s 1.5 2.0 2.5 0.15 kV DC
Coupling ≈1.2 ≈1.2 ≈1.2 - nF
capacitance
Insulation resist. >100 >100 >100 - MΩ
at 500 V DC
Partial discharge Consult factory - kV
extinction voltage
Fig. 26
Pin allocation C pinout, bottom view
Table 13: Pin allocation, standard pinout, option M and Z
Pin Single output Double output
1Vi+ Vi+
2Vi–Vi–
3i i
4 n.c. R (Trim)
10 Vo–Vo1–
11 Vo+ Vo1+
12 Vo–Vo2–
13 R Vo2+
14 n.c. n.c.
Table 14: Pin allocation for C-pinout (option C)
Pin Single output Dual output
1Vi+ Vi+
2Vi–Vi–
3Vo+ Vo+
4 no pin Go
5Vo–Vo–
Table 15: Pin allocation SMD version (option L)
Pin Single output Dual output
1Vo Vo1
2Go Go
3 n.c. Vo2
4 n.c. n.c.
5 n.c. n.c.
6 n.c. n.c.
7 n.c. n.c.
8 n.c. n.c.
9 n.c. Trim
10 n.c. n.c.
11 i i
12 no pin no pin
13 no pin no pin
14 n.c. n.c.
15 n.c. n.c.
16 n.c. n.c.
17 Vi–Vi–
18 Vi+ Vi+
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 17/18
AC-DC
front
end
DC-DC
con-
verter
Mains
Fuse
Battery
Earth
connection
Suppressor
diode SELV
Earth
connection
+
–
~
~
10004
Fig. 27
Schematic safety concept. Use fuse, suppressor diode
and earth connection as per table:
Safety concept leading
to an SELV output circuit
.
Table 16: Insulation concept leading to an SELV output circuit
Conditions Front end DC-DC converter Result
Supply Minimum required grade Maximum Minimum required safety Measures to achieve the Safety status of
voltage of isolation, to be provided DC output status of the front end specified safety status of the the DC-DC
by the AC-DC front end, voltage output circuit output circuit converter output
including mains supplied from the circuit
battery charger front end 1
Mains Basic ≤60 V Earthed SELV circuit 2 Operational insulation (pro- SELV circuit
≤250 V AC vided by the DC-DC converter)
ELV circuit Input fuse 3 output suppressor Earthed SELV
>60 V Hazardous voltage diode(s) 4, and earthed circuit
secondary circuit output circuit(s) 2
Double or reinforced ≤60 V SELV circuit Operational insulation (pro- SELV circuit
vided by the DC-DC converter)
>60 V TNV-2 circuit Supplementary insulation,
Double or reinforced insu- based on the maximum input
lated unearthed hazardous voltage (provided by the
voltage secondary circuit 5 DC-DC converter)
1The front end output voltage should match the specified input voltage range of the DC-DC converter.
2The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
3The 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
.
4Each 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
).
5Has to be insulated from earth by basic insulation according to the relevant safety standard, based on the maximum output voltage
from the front end.
Safety of operator accessible output circuit
If the output circuit of a DC-DC converter is operator acces-
sible, it shall be an SELV circuit according to IEC/EN 60950
related safety standards.
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 cir-
cuit according to IEC/EN 60950 up to a configured output
voltage (sum of nominal voltages if in series or +/– configu-
ration) of 46 V.
However, it is the sole responsibility of the installer to en-
sure the compliance with the relevant and applicable safety
regulations. More information is given in:
Technical Infor-
mation:
Safety
.
Description of Options
Table 17: Survey of options
Option Function Characteristics
-8 Operational temperature range
T
A = –40...85°C Extended temperature range. Excludes option D.
D Signal Out OK Available for single output units. Excludes option -8.
M Surface mount version, SMD Excludes option C.
C C-pinout Excludes option M as well as galvanic isolation between output 1
and 2 of double output units. Not available for 70/110 IMX 7 types.
Option -8
Extension of the temperature range from standard
–25...71°C to –40...85°C. The modules will provide full out-
put power with free air convection cooling. UL recognition
up to 80°C. This option excludes option D.
Board Mountable DC-DC Converters IMX 7 Series
Edition 6/5.2000 18/18
Fig. 29
Out OK signal with corresponding transistor status
t
U
o
[V]
U
D low
U
D high
Output
voltage
U
o Hyst
t
D on delay
Out OK
t
r on
t
D off delay
11032
Fig. 28
Option D, Out OK
11
14
Vo+
Vo–
D
U
D
I
D
R
p
10
Output
control
circuit
11031
Option C
The C-pinout configures the electrically isolated double out-
puts 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
).
Option D
Single output units can be provided with an Out OK func-
tion. The D-output is an open collector transistor output ref-
erenced to Vo– and indicates that the output voltage is
above approximately 90% of the specified nominal output
voltage. It can for example be used for remote signalling or
to prevent a connected system from starting up at a low out-
put voltage. The current
I
D through the NPN transistor
should not exceed 20 mA. The NPN output is not protected
against external overvoltages.
U
D should not exceed 25 V.
Option D excludes option -8.
Table 18: Out OK characteristics
Out OK 3.3 V units 5.1 V units Unit
characteristics
U
o
U
o
min max min max
U
D low D output conducting ≥3.0 ≥4.75 V
U
D high D output disabled ≤2.85 ≤4.5
U
o Hyst Hysteresis 30 (typical) mV
t
D on delay Transistor on delay 140 560 140 560 ms
t
D off delay Transistor off delay 100 100 µs
Option M and L
Surface mount version.
Note: Precautions should be taken when reflow soldering
the SMD version. The reflow soldering instructions below
should be strictly adhered to. An inadequate soldering pro-
cess may permanently damage the converter or degrade
its performance and Power-One will not honour any gua-
rantee/warranty claims resulting from damage caused by
ignoring the soldering instructions.
Infrared soldering is not permitted.
The surface mountable version of this product is assem-
bled with high melting point solder (227°C) to ensure that
the solder joints of of the internal components do not de-
grade in the end users SMD soldering process.
This product is only specified for "Forced Convection
Reflow Soldering" (Hot Air). Any conventional soldering
profile is acceptable provided that the restriction curve be-
low is not exceeded at any time during the reflow process.
210
220
230
240
010 20 30
T
peak
[°C]
11051
40
t
[s]
50
205
215
225
235
Fig. 30
Forced convection reflow soldering restriction curve
measured on pin 2
Fig. 31
Proposed solder lands option M
50
3.81
Top view
09119
4 x 3.81
25.4
3 x 5.8
3.81
4
2
24 (0.94")
2.8 (0.11")
3.6 (1.4")
8 x 5 (1.9")
Foot print
Fig. 32
Proposed solder lands option L
