Cassette Style DC-DC Converters M Series
Edition 01/01.2001 1/25
50 Watt DC-DC (AC-DC) Converters M Series
• Extremely wide input voltage range suitable for
battery (and AC) operation
• Efficient input filter and built-in surge and transient
suppression circuitry
• Outputs individually isolated and controlled
• Outputs fully protected against overload
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
Auxiliary Functions ......................................................... 10
Page
Electromagnetic Compatibility (EMC) ............................ 13
Immunity to Environmental Conditions........................... 15
Mechanical Data ............................................................ 16
Safety and Installation Instructions ................................ 17
Description of Options .................................................... 19
Accessories .................................................................... 25
Summary
The M series of DC-DC (AC-DC) converters represents a
broad and flexible range of power supplies for use in ad-
vanced industrial electronic systems. Features include high
efficiency, reliability, low output voltage noise and excellent
dynamic response to load/line changes due to individual
regulation of each output.
The converter inputs are protected against surges and tran-
sients occuring at the source lines. An input over- and
undervoltage lock-out circuitry disables the outputs if the in-
put voltage is outside the specified range. Certain types in-
clude an inrush current limitation preventing circuit break-
ers and fuses from being damaged at switch-on.
All outputs are open- and short-circuit proof and are pro-
tected against overvoltages by means of built-in suppressor
diodes. The outputs can be inhibited by a logic signal ap-
plied to the connector pin 2 (i). If the inhibit function is not
used pin 2 should be connected to pin 23 to enable the out-
puts.
LED indicators display the status of the converter and allow
visual monitoring of the system at any time.
Full input to output, input to case, output to case and output
to output isolation is provided. The modules are designed
and built according to the international safety standard
IEC/EN 60950 and have been approved by the safety
agencies LGA (Germany) and UL (USA). The UL Mark for
Cana-da has been officially recognized be regulatory au-
thorities in provinces across Canada.
The case design allows operation at nominal load up to
71°C in a free air ambient temperature. If forced cooling is
provided, the ambient temperature may exceed 71°C but
the case temperature should remain below 95°C under all
conditions.
A temperature sensor generates an inhibit signal which
disables the outputs if the case temperature
T
C exceeds the
limit. The outputs are automatically re-enabled when the
temperature drops below the limit.
Various options are available to adapt the converters to in-
dividual applications.
The modules may either be plugged into 19 inch rack sys-
tems according to DIN 41494, or be chassis mounted.
Safety according to IEC/EN 60950
168
6.6"
39
1.54"
8TE
111
4.37"
3U
Wide input voltage from 8...373 V DC
1, 2 or 3 isolated outputs up to 48 V DC
4 kV AC I/O electric strength test voltage
LGA
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 2/25
Notes: EM types with an input voltage range of 67...385 V DC are available upon request.
LM types may be operated in AC mode within a frequency range of 47...440 Hz and LMZ types within a frequency range of
47...65 Hz. See:
AC-DC converters
≤
100 W: M-Series.
Type Survey and Key Data
Non standard input/output configurations or special custom adaptions are available on request. See also:
Commercial In-
formation: Inquiry Form for Customized Power Supply
.
The type survey tables provide an overview of the basic input and output configurations. More than 1000 different types
have been manufactured providing different output configurations and customized specialities. Please consult Power-
One's field sales engineers for specific requirements. The best technical solution will carefully be considered and a detailed
proposal submitted.
Table 1a: Class I equipment
Output 1 Output 2 Output 3 Input voltage range and efficiency 1 Options
U
o nom
I
o nom
U
o nom
I
o nom
U
o nom
I
o nom
U
i min...
U
i max hmin
U
i min...
U
i max hmin
U
i min...
U
i max hmin
[V DC] [A] [V DC] [A] [V DC] [A] 8...35 V DC [%] 14...70 V DC [%] 20...100 V DC [%]
5.1 8.0 - - - - AM 1001-7R 72 BM 1001-7R 74 FM 1001-7R 74 –9
12.0 4.0 - - - - AM 1301-7R 79 BM 1301-7R 80 FM 1301-7R 80 P
15.0 3.4 - - - - AM 1501-7R 79 BM 1501-7R 81 FM 1501-7R 81 D0...D9
24.0 2.0 - - - - AM 1601-7R 81 BM 1601-7R 83 FM 1601-7R 82 V0,V2,V3
48.0 1.0 - - - - AM 1901-7R 81 BM 1901-7R 83 FM 1901-7R 83 A
12.0 2.0 12.0 2.0 - - AM 2320-7 77 BM 2320-7 79 FM 2320-7 80 H
15.0 1.7 15.0 1.7 - - AM 2540-7 78 BM 2540-7 80 FM 2540-7 79 F
5.1 5.0 12.0 0.7 12.0 0.7 AM 3020-7 75 BM 3020-7 76 FM 3020-7 76
5.1 5.0 15.0 0.6 15.0 0.6 AM 3040-7 75 BM 3040-7 76 FM 3040-7 76
Table 1b: Class I equipment
Output 1 Output 2 Output 3 Input voltage range and efficiency 1 Options
U
o nom
I
o nom
U
o nom
I
o nom
U
o nom
I
o nom
U
i min...
U
i max hmin
U
i min...
U
i max hmin
U
i min...
U
i max hmin
[V DC] [A] [V DC] [A] [V DC] [A] 28…140 V DC [%] 44…220 V DC [%] 88...372 V DC [%]
(85...264 V AC)
5.1 8.0 - - - - CM 1001-7R 74 DM 1001-7R 74 LM 1001-7R 73 –9
12.0 4.0 - - - - CM 1301-7R 80 DM 1301-7R 81 LM 1301-7R 79 E
15.0 3.4 - - - - CM 1501-7R 82 DM 1501-7R 82 LM 1501-7R 78 P
24.0 2.0 - - - - CM 1601-7R 82 DM 1601-7R 83 LM 1601-7R 81 D0...D9
48.0 1.0 - - - - CM 1901-7R 82 DM 1901-7R 83 LM 1901-7R 81 V0,V2,V3
12.0 2.0 12.0 2.0 - - CM 2320-7 79 DM 2320-7 80 LM 2320-7 77 A
15.0 1.7 15.0 1.7 - - CM 2540-7 80 DM 2540-7 80 LM 2540-7 78 H
5.1 5.0 12.0 0.7 12.0 0.7 CM 3020-7 76 DM 3020-7 77 LM 3020-7 73 F
5.1 5.0 15.0 0.6 15.0 0.6 CM 3040-7 76 DM 3040-7 76 LM 3040-7 71
Table 1c: Class II equipment (double insulation)
Output 1 Output 2 Output 3 Input voltage range and efficiency 1 Options
U
o nom
I
o nom
U
o nom
I
o nom
U
o nom
I
o nom
U
i min...
U
i max hmin
U
i min...
U
i max hmin
U
i min...
U
i max hmin
[V DC] [A] [V DC] [A] [V DC] [A] 28...140 V DC [%] 44...220 V DC [%] 88...372 V DC [%]
(85...264 V AC)
5.1 8.0 - - - - CMZ 1001-7R 74 DMZ 1001-7R 74 LMZ 1001-7R 73 –9
12.0 4.0 - - - - CMZ 1301-7R 80 DMZ 1301-7R 81 LMZ 1301-7R 79 E
15.0 3.4 - - - - CMZ 1501-7R 82 DMZ 1501-7R 82 LMZ 1501-7R 78 P
24.0 2.0 - - - - CMZ 1601-7R 82 DMZ 1601-7R 83 LMZ 1601-7R 81 D0…D9
48.0 1.0 - - - - CMZ 1901-7R 82 DMZ 1901-7R 83 LMZ 1901-7R 81 V0,V2,V3
12.0 2.0 12.0 2.0 - - CMZ 2320-7 79 DMZ 2320-7 80 LMZ 2320-7 77 A
15.0 1.7 15.0 1.7 - - CMZ 2540-7 80 DMZ 2540-7 80 LMZ 2540-7 78 H
5.1 5.0 12.0 0.7 12.0 0.7 CMZ 3020-7 76 DMZ 3020-7 77 LMZ 3020-7 73 F
5.1 5.0 15.0 0.6 15.0 0.6 CMZ 3040-7 76 DMZ 3040-7 76 LMZ 3040-7 71
1Efficiency at
U
i nom and
I
o nom.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 3/25
Type Key
Type Key C M Z 2 5 40 -7 E R P D V A H F
Input voltage range
U
i: 8...35 V DC ............... A
14...70 V DC ............... B
20...100 V DC ............... F
28...140 V DC .............. C
44...220 V DC .............. D
67...385 V DC ............... E1
85...264 V AC, 88...372 V DC .............. L
Series .............................................................................. M
Class II Equipment ........................................................... Z
Number of outputs....................................................... 1...3
Output 1,
U
o1 nom: 5.1 V .......... 0...2
12 V ............... 3
15 V .......... 4...5
24 V ............... 6
other voltages .......... 7...8
48 V ............... 9
other specs for single output modules ...... 01...99
Output 2 and 3,
U
o2 nom,
U
o3 nom: 5.1 V ...... 01...19
12 V ...... 20...39
15 V ...... 40...59
24 V ...... 60...69
other voltages for multiple output modules ...... 70...99
Ambient temperature range
T
A:–25…71°C .............. -7
–40…71°C .............. -9
customer specific ........-0...-8
Auxiliary functions and options:
Inrush current limitation (C/E/LM and C/LMZ) ................. E
Output voltage control input (single output modules) ...... R 2
Potentiometers for fine adjustment of output voltages ..... P 2
Save data signal (D0...D9, to be specified) ..................... D 3
ACFAIL signal (V0, V2, V3, to be specified) .....................V 3
Output voltage test sockets ..............................................A
Increased electric strength test voltage (o/c) .................. H
Input fuse built-in (not accessible).................................... F
1EM types available upon request
2Feature R excludes option P and vice versa
3Option D excludes option V and vice versa
Example: CM 2540-7PD3A: DC-DC converter, input voltage range 28...140 V, providing output 1 with 15 V/1.7 A and
output 2 with 15 V/1.7 A; equipped with potentiometers, undervoltage monitor and test sockets.
Note: All units feature input and output filters and the auxiliary function inhibit which are not shown in the type designation.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 4/25
Functional Description
The input voltage is fed via an input fuse, an input filter, a
rectifier 3 and an inrush current limiter 4 to the input capaci-
tor. This capacitor sources a single transistor forward con-
verter. Each output is powered by a separate secondary
winding of the main transformer. The resultant voltages are
rectified and their ripples smoothed by a power choke and
an output filter. The control logic senses the main output
voltage
U
o1 and generates, with respect to the maximum
admissible output currents, the control signal for the pri-
mary switching transistor. This signal is fed back via a cou-
pling transformer.
The auxiliary outputs
U
o2 and
U
o3 are individually regulated
by means of secondary switching transistors. Each aux-
iliary output's current is sensed using a current transformer.
If one of the outputs is driven into current limit, the other out-
puts will reduce their output voltages as well because all
output currents are controlled by the same main control cir-
cuit.
Fig. 1b
Block diagram, class II equipment (double insulation)
1Transient suppressor diode in AM, BM, CM, FM and CMZ types.
2Bridge rectifier in LM and LMZ, series diode in EM types.
3Inrush current limiter (NTC) in CM, DM, EM, LM and CMZ, DMZ, LMZ types (option E: refer to the description of option E).
4Single output modules AM...LM 1000 and CMZ...LMZ 1000 with feature R.
For output configuration please refer to table:
Pin allocation
.
Fig. 1a
Block diagram, class I equipment
Input filter
Output 1
filter
Output 3
filter
Output 2
filter
Control
circuit
Main control circuit
Control
circuit
1
Fuse
P
29
11
8
23
5
26
32
17
14
20
2
14
17
3
2
Forward converter
approx. 70 kHz
4
4
C
Y
C
Y
C
MKT
C
MKT
Vi+
Vi–
i
D/V
R
G
03009
Input filter
Output 1
filter
Output 3
filter
Output 2
filter
Control
circuit
Main control circuit
Control
circuit
1
Fuse
P
29
11
8
23
5
32
17
14
20
2
14
17
3
2
Forward converter
approx. 70 kHz
4
4
C
MKT
C
MKT
Vi+
Vi–
i
D/V
R
G
C
Y
C
Y
03010
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 5/25
Table 2b: Input data
Input DM/DMZ EM LM/LMZ
Characteristics Conditions min typ max min typ max min typ max Unit
U
iOperating input voltage
I
o = 0…
I
o nom - - 85 264 V AC 1
T
C min…
T
C max 44 220 67 385 88 372 V DC
U
i nom Nominal input voltage 110 220 310
I
iInput current
U
i nom,
I
o nom 20.55 0.275 0.20 A
P
i 0 No-load input power:
U
i nom
Single output
I
o1,2,3 = 0 1 1.5 1 1.5 1 1.5 W
Double output 7 9 7 9 7 9
Triple output 6 9 6 9 6 9
P
i inh Idle input power inhibit mode 2 2 2
I
inr p 6Peak inrush current
U
i
=
U
i max 110 4160 460 4A
t
inr r Rise time
R
S = 0 Ω 340 40 300 µs
t
inr h Time to half-value
T
C = 25°C250 240 900
R
iInput resistance
T
C = 25°C 2000 4 2400 4 6200 4 mΩ
C
iInput capacitance 140 270 140 270 140 270 µF
U
i abs Input voltage limits 0 400 5–400 400 –400 400 V DC
without any damage ––––0 284 V AC
1In AC powered mode: LM types: 47...440 Hz; LMZ types: 47...65 Hz. See:
AC-DC Converters
≤
100 W: M-Series
.
2With multiple output modules, the same condition for each output applies.
3
R
S = source resistance.
4Value for initial switch-on cycle.
51 s max., duty cycle 1% max.
6
I
inr p
=
U
i/(
R
s
+
R
i). See also:
Inrush Current
.
Electrical Input Data
General conditions:
–
T
A = 25°C, unless
T
C is specified.
– Connector pins 2 and 23 interconnected, with option P:
U
o =
U
o nom, R input not connected.
Table 2a: Input data
Input AM BM FM CM/CMZ
Characteristics Conditions min typ max min typ max min typ max min typ max Unit
U
iOperating input voltage
I
o = 0…
I
o nom 8 35 14 70 20 100 28 140 V DC
U
i nom Nominal input voltage
T
C min…
T
C max 15 30 50 60
I
iInput current
U
i nom,
I
o nom 2 4.0 2.0 1.2 1.0 A
P
i 0 No-load input power:
U
i nom
Single output
I
o1,2,3 = 0 1 1.5 1 1.5 1 1.5 1 1.5 W
Double output 7 9 7 9 7 9 7 9
Triple output 6 9 6 9 6 9 6 9
P
i inh Idle input power inhibit mode 2 2 2 2
I
inr p 6 Peak inrush current
U
i
=
U
i max 400 500 400 170 4 A
t
inr r Rise time
R
S = 0 Ω 360 50 40 60 µs
t
inr h Time to half-value
T
C = 25°C170 100 60 280
R
iInput resistance
T
C = 25°C 87.5 140 250 824 4 mΩ
C
iInput capacitance 2600 4000 670 1100 370 600 370 600 µF
U
i abs Input voltage limits 0 40 0 80 0 120 0 160 V DC
without any damage
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 6/25
Input Fuse
A fuse holder containing a slow-blow type fuse (Dimension:
5 × 20 mm) is mounted in the converter's back plate. The
fuse protects the module against severe defects. It may not
fully protect the module at input voltages exceeding
200 V DC. In applications where the converters operate at
DC source voltages above 200 V DC, an external fuse or a
circuit breaker at system level should be installed.
For applications where the fuse should be inaccessible: see
Option F
.
Input Under-/Overvoltage Lock-out
If the input voltage remains below 0.8
U
i min or exceeds
1.1
U
i max (approx. values), an internally generated inhibit
signal disables the output(s). When checking this function
the absolute maximum input voltage rating
U
i abs must be
carefully considered (see table:
Input data
). Between
U
i min
and the undervoltage lock-out level the output voltage may
be below the value defined in table:
Output data
(see:
Tech-
nical Information: Measuring and Testing
).
U
i DC
________
U
i min DC
23456
1
0.10
1.00
10.00
AM
I
i
[A]
LM/LMZ
BM
FM
CM/CMZ
DM/DMZ
EM
04014
350
300
50; 250
40; 200
30; 150
20; 100
10; 50
0
400
00.8
2.0
1.0
2.5
1.2
3.0
1.4
3.5
1.6
4.0
0.6
1.5
0.4
1.0
0.2
0.5
AM
BM
CM/CMZ
FM
EM
A…EM
LM
I
i
[A]
LM/LMZ
DM/DMZ
t [ms]
LM
A…EM
04015
Fig. 3
Typical inrush current at initial switch-on cycle and at
U
i max
[DC] versus time
Fig. 2
Typical input current versus relative input voltage at
nominal output load
Reverse Polarity
Reverse polarity at the input of AM, BM, CM, DM, FM and
CMZ, DMZ types will cause the fuse to blow. In EM, LM and
LMZ types a series diode will protect the module. A series
diode is not incorporated in AM, BM, CM, DM, FM and
CMZ, DMZ types to avoid unwanted power loss.
Inrush Current
The CM, DM, EM, LM and CMZ, DMZ, LMZ (excluding FM)
modules incorporate an NTC resistor in the input circuitry
which (during the initial switch-on cycle) limits the peak in-
rush current to avoid damage to connectors and switching
devices. Subsequent switch-on cycles within a short inter-
val will cause an increase of the peak inrush current due to
the warming up of the NTC resistor. Refer also to:
Option E
description.
Table 3: Fuse types (slow-blow)
Series Schurter type Part number
AM 1000...3000 SPT 10 A 250 V 0001.2514
BM 1000...3000 SPT 8 A 250 V 0001.2513
FM 1000...3000 SPT 5 A 250 V 0001.2511
CM/CMZ 1000...3000 SPT 3.15 A 250 V 0001.2509
DM/DMZ 1000...3000 SPT 2.5 A 250 V 0001.2508
EM 1000...3000
LM/LMZ 1000...3000
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 7/25
Electrical Output Data
General conditions
–
T
A = 25°C, unless
T
C is specified.
– Connector pins 2 and 23 interconnected,
U
o =
U
o nom (option P), R input not connected.
Table 4: Output data
Output
U
o nom 5.1 V 12 V 15 V 24 V 48 V
Characteristics Conditions min typ max min typ max min typ max min typ max min typ max Unit
U
oOutput voltage
U
i nom,
I
o nom 1 5.07 5.13 11.93 12.07 14.91 15.09 23.86 24.14 47.72 48.28 V
U
o p Output overvoltage 7.5 21 25 41 85
protection 6
I
o nom Output current
U
i min...
U
i max see
Type Survey and Key Data
I
o L Output current
T
C min...
T
C max see Fig.
Typical output voltage U
o1
versus output currents I
o
limitation response
u
oOutput Switch. freq.
U
i nom,
I
o nom 1 15 30 25 50 35 70 40 80 50 100 mVpp
voltage Total IEC/EN 61204 5 60 120 40 80 40 80 40 80 -
noise BW = 20 MHz
D
U
o U Static line regulation
U
i min...
U
i nom ±10 ±30 ±12 ±50 ±15 ±60 ±15 ±60 ±15 ±60 mV
U
i nom...
U
i max
I
o nom 1
D
U
o I Static load regulation
U
i nom 6 25 1350 1760 3080 60150
I
o nom...0 2
D
U
o I c Static cross load
U
i nom 0±15 0 ±20 0 ±30 0 ±40 -
regulation 4
I
o nom...0 3
u
o d Dynamic Voltage
U
i nom ±220 ±110 ±150 ±130 ±150
load deviation
I
o nom ↔ 1/3
I
o nom 2
t
dregulation Recovery IEC/EN 61204 0.6 0.6 0.5 1 2 ms
time
u
o d c Dynamic Voltage
U
i nom +10 +10 +10 +20 - mV
cross load deviation
I
o nom ↔ 1/3
I
o nom 3–100 –75 –140 –200 -
t
d c regulation Recovery IEC/EN 61204 0.05 0.2 0.5 1 - ms
4time 0.5 0.3 0.7 2 -
aUo Temperature
U
i min...
U
i max ±0.02 ±0.02 ±0.02 ±0.02 ±0.02 %/K
coefficient 0...
I
o nom ±1.0 ±2.4 ±3.0 ±4.8 ±9.6 mV/K
D
U
o/D
T
C
1With multiple output modules, the same condition for each output applies.
2Condition for specified output. With multiple output modules, other output(s) loaded with constant current
I
o nom. See fig.:
Dynamic
load regulation.
3Condition for non-specified output, individually tested, other output(s) loaded with constant current
I
o nom. See fig.:
Dynamic load regu-
lation.
4Multiple output modules.
5See:
Technical Information: Measuring and Testing
.
6By suppressor diode.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 8/25
Thermal Protection
A temperature sensor generates an internal inhibit signal
which disables the outputs if the case temperature exceeds
T
C max. The outputs are automatically re-enabled if the tem-
perature drops below this limit.
Output Protection
Each output is protected against overvoltages which could
occur due to a failure of the internal control circuit. Voltage
suppressor diodes (which under worst case condition may
become a short circuit) provide the required protection. The
suppressor diodes are not designed to withstand externally
applied overvoltages. Overload at any of the outputs will
cause a shut-down of all outputs. A red LED indicates the
overload condition of the respective output.
Parallel and Series Connection
Main outputs of equal nominal voltage can be connected in
parallel. It is important to assure that the main output of a
multiple output module is forced to supply a minimum cur-
rent of 0.1 A to enable correct operation of its own auxiliary
outputs.
In parallel operation, one or more of the main outputs may
operate continuously in current limitation which will cause
an increase in case temperature. Consequently, a reduction
of the max. ambient temperature by 10 K is recommended.
Main or auxiliary outputs can be connected in series with
any other output of the same or another module. In series
connection, the maximum output current is limited by the
lowest current limit. Output ripple and regulation values are
added. Connection wiring should be kept as short as possi-
ble.
If output terminals are connected together in order to estab-
lish multi-voltage configurations, e.g. +5.1 V, ±12 V etc. the
common ground connecting point should be as close as
possible to the connector of the converter to avoid exces-
sive output ripple voltages.
Auxiliary outputs should never be connected in parallel!
Thermal Considerations
If a converter is located in free, quasi-stationary air (con-
vection cooling) at the indicated maximum ambient tem-
perature
T
A max (see table:
Temperature specifications)
and
is operated at its nominal input voltage and output power,
the temperature 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 integration into a system. The
thermal conditions are influenced by input voltage, output
current, airflow and temperature of surrounding compo-
nents and surfaces.
T
A max is therefore, contrary to
T
C max,
an indicative value only.
Caution: The installer must ensure that under all operat-
ing conditions
T
C remains within the limits stated in the
table:
Temperature specifications.
Notes: Sufficient forced cooling or an additional heat sink
allows
T
A to be higher than 71°C (e.g. 85°C) if
T
C max is not
exceeded.
For -7 or -9 units at an ambient temperature
T
A of 85°C with
only convection cooling, the maximum permissible current
for each output is approx. 50% of its nominal value as per
figure.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
50 60 70 80 90 100
I
o/
I
o nom
T
A [°C]
0.9
1.0
Forced cooling
05031
T
A min
T
C max
Convection cooling
Fig. 6
Output current derating versus temperature for -7 and -9
units.
1.0
0
0.5
U
o1
0.5
U
o1 nom
I
o
I
o nom
1.0 1.2
I
o nom
I
o1
I
o2,
I
o3
I
oL1
I
oL2
,I
oL3
.95
05022
I
o
/
I
o nom
1
u
od
u
od
t
d
t
d
D
U
o I
D
U
o I
t
U
o
0
t
≥10 µs
≥10 µs
05010
Fig. 4
Typical output voltage U
o1
versus output currents
I
o.
Fig. 5
Dynamic load regulation u
o d
versus load change.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 9/25
Hold-up Time and Output Response
When the input voltage is switched off, the output voltage
will remain high for a certain hold-up time
t
h (see fig.:
Output
response as a function of input voltage or inhibit control
) be-
fore the output voltage falls below 0.95
U
o nom. To achieve
the hold-up times indicated in fig.:
Typical hold-up time t
h
versus relative input voltage at I
o nom, AM, BM, CM, DM, FM
and CMZ, DMZ modules require an external series diode in
the input path. This is necessary to prevent the discharge of
the input capacitor through the source impedance or other
circuits connected to the same source. EM, LM and LMZ
modules have a built-in series diode. In AM, BM, CM, DM,
FM and CMZ, DMZ modules, no series diode is built-in,
since it would generate up to 10 W of additional power loss
inside the converter. Consequently the maximum opera-
tional ambient temperature would have to be reduced ac-
cordingly.
Note: For additional hold-up time see also
Description of
Options: V ACFAIL Signal (VME).
The behavior of the outputs is similar with either the input
voltage applied or the inhibit switched low.
An output voltage overshoot will not occur when the module
is turned on or off.
Fig. 7
Output response as a function of input voltage (on/off
switching) or inhibit control
Fig. 8
Typical hold-up time t
h
versus relative input voltage at I
o nom
234561
0.10
1.00
1000.00
U
i DC
______
U
i min DC
t
h
[ms]
10.00
100.00
LM/LMZ
EM
CM/DM
CMZ/DMZ
AM/BM/FM
05024
0t
r
t
f
t
t
0
Inhibit
1
Output
0.1
U
o nom
t
0
1
0.95U
o nom
t
h
U
i
05025
Output Current Allocation for Special Types
Output currents differing from those given for standard
types (as per:
Type Survey and Key Data
) can be provided.
A maximum output power of 50 W should be considered, if
an ambient temperature range of –25...71°C is required.
The maximum permissible output currents are indicated in
the table below. If (upon customer's request) output volta-
ges are different from standard values, the relevant output
currents have to be adapted accordingly.
With reduced maximum ambient temperature or with forced
cooling, the total output power may exceed 50 W. Custom-
ized configurations always need to be checked by a feasibil-
ity study first. Please ask Power-One's sales engineers for
a proposal appropriate to your specific needs. See also:
Commercial Information: Inquiry Form for Customized
Power Supply.
Table 5: Current allocation with special types
Output voltage Output 1 Output 2 Output 2 Output 3 Temperature
all types all types A...LM 2000 A...LM 3000 A...LM 3000
U
o1/2/3 nom [V]
I
o1 max [A]
I
o2 max [A]
I
o2 max [A]
I
o3 max [A]
T
A [°C]
T
C [°C]
5.1 8.0 4.0 1.8 (2.5 1)1.5–25...71 –25...95
12 4.0 2.0 1.5 1.2
15 3.4 1.7 1.2 1.0
24 2.0 1.0 0.7 0.5
25.1 10.0 4.5 2.1 (2.8 1)1.8–25...60 –25...90
12 5.0 2.5 1.7 1.5
15 4.0 2.0 1.5 1.3
24 2.5 1.3 0.9 0.7
5.1 11.0 5.0 2.4 (3.0 1)2.0–25...50 –25...85
12 6.0 3.0 2.0 1.7
15 4.6 2.3 1.7 1.5
24 3.0 1.5 1.0 0.8
1Special high current components required. 2
U
i min has to be increased.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 10/25
Table 6: Output response time t
r
and t
f
. Values not applicable for modules equipped with option E.
Type of converter
t
r at
P
o = 0 and
t
f at
P
o =
P
o nom
t
r and
t
f at
P
o = 3/4
P
o nom
t
r at
P
o =
P
o nom Unit
typ max typ max typ max
A...LM 1001-7R and C/D/LMZ 1001-7R 5 10 5 10 10 20 ms
A...LM 1301-7R and C/D/LMZ 1301-7R 10 20 15 30 20 40
A...LM 1501-7R and C/D/LMZ 1501-7R 5 10 10 20 30 60
A...LM 1601-7R and C/D/LMZ 1601-7R 15 30 25 50 40 80
A...LM 1901-7R and C/D/LMZ 1901-7R 65 130 100 200 165 330
A...LM 2320-7 and C/D/LMZ 2320-7 20 40 30 60 50 100
A...LM 2540-7 and C/D/LMZ 2540-7 15 30 20 40 35 70
A...LM 3020-7 and C/D/LMZ 3020-7 55 110 85 170 145 290
A...LM 3040-7 and C/D/LMZ 3040-7 40 80 60 120 100 200
Conditions:
R input not used. For multiple output modules the figures indicated in the table above relate to the output which reacts
slowest. All outputs are resistively loaded. Variation of the input voltage within
U
i min...
U
i max does not influence the values
considerably.
Table 7: Inhibit data
Characteristics Conditions min typ max Unit
U
inh Inhibit input voltage to keep
U
o = on
U
i min...
U
i max –50 0.8 V DC
output voltage
U
o = off
T
C min...
T
C max 2.4 50
I
inh Inhibit current
U
inh = 0 –60 –100 –220 µA
Auxiliary Functions
i Inhibit for Remote On and Off
Note: With open i input: Output is disabled (
U
o = off).
The outputs of the module may be enabled or disabled by
means of a logic signal (TTL, CMOS, etc.) applied between
the inhibit input i and the negative pin of output 1 (Vo1–). In
systems with several units, this feature can be used, for ex-
ample, to control the activation sequence of the converters.
If the inhibit function is not required, connect the inhibit pin
2 to pin 23 to enable the outputs (active low logic, fail safe).
For output response refer to:
Hold-up Time and Output Re-
sponse
.
Vi+
Vi–Vo–
i
Vo+
I
inh
U
inh
06031
1.6
0.8
0
–0.8
–50
U
inh
[V]
I
inh
[mA]
–30 0–10 10 30 50
2.0
1.2
0.4
–0.4
U
inh
= 0.8 V
U
o
= on
U
o
= off
U
inh
= 2.4 V
06032
Fig. 9
Definition of U
inh
and I
inh
.
Fig. 10
Typical inhibit current I
inh
versus inhibit voltage U
inh
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 11/25
Table 8a: R
1
for U
o
< U
o nom
(conditions: U
i nom
, I
o nom
, rounded up to resistor values E 96, R
2
=
∞
)
U
o nom = 5.1 V
U
o nom = 12 V
U
o nom = 15 V
U
o nom = 24 V
U
o nom = 48 V
U
o [V]
R
1 [kΩ]
U
o [V]
R
1 [kΩ]
U
o [V]
R
1 [kΩ]
U
o [V]
R
1 [kΩ]
U
o [V]
R
1 [kΩ]
0.5 0.432 2.0 0.806 2.0 0.619 4.0 0.806 8.0 0.806
1.0 0.976 3.0 1.33 4.0 1.47 6.0 1.33 12.0 1.33
1.5 1.65 4.0 2.0 6.0 2.67 8.0 2.0 16.0 2.0
2.0 2.61 5.0 2.87 8.0 4.53 10.0 2.87 20.0 2.87
2.5 3.83 6.0 4.02 9.0 6.04 12.0 4.02 24.0 4.02
3.0 5.76 7.0 5.62 10.0 8.06 14.0 5.62 28.0 5.62
3.5 8.66 8.0 8.06 11.0 11.0 16.0 8.06 32.0 8.06
4.0 14.7 9.0 12.1 12.0 16.2 18.0 12.1 36.0 12.1
4.5 30.1 10.0 20.0 13.0 26.1 20.0 20.0 40.0 20.0
5.0 200.0 11.0 44.2 14.0 56.2 22.0 44.2 44.0 44.2
Table 8b: R
2
for U
o
> U
o nom
(conditions: U
i nom
, I
o nom
, rounded up to resistor values E 96, R
1
=
∞
)
U
o nom = 5.1 V
U
o nom = 12 V
U
o nom = 15 V
U
o nom = 24 V
U
o nom = 48 V
U
o [V]
R
2 [kΩ]
U
o [V]
R
2 [kΩ]
U
o [V]
R
2 [kΩ]
U
o [V]
R
2 [kΩ]
U
o [V]
R
2 [kΩ]
5.15 464 12.1 1780 15.2 1470 24.25 3160 48.5 6810
5.20 215 12.2 909 15.4 750 24.50 1620 49.0 3480
5.25 147 12.3 619 15.6 511 24.75 1100 49.5 2370
5.30 110 12.4 464 15.8 383 25.00 825 50.0 1780
5.35 90.9 12.5 383 16.0 332 25.25 715 50.5 1470
5.40 78.7 12.6 316 16.2 274 25.50 590 51.0 1270
5.45 68.1 12.7 274 16.4 237 25.75 511 51.5 1100
5.50 61.9 12.8 249 16.5 226 26.00 453 52.0 953
13.0 200 26.25 402 52.5 845
13.2 169 26.40 383 52.8 806
R-Control for Output Voltage Adjustment
Notes: With open R input,
U
o ≈
U
o nom. R excludes option P.
As a standard feature, single output modules offer an
adjustable output voltage identified by letter R in the type
designation.
The output voltage
U
o1 can either be adjusted with an exter-
nal voltage (
U
ext) or with an external resistor (
R
1 or
R
2). The
adjustment range is approximative 0…110 % of
U
o nom. For
output voltages
U
o >
U
o nom, the minimum input voltage ac-
cording to:
Electrical Input Data
increases proportionally to
U
o/
U
o nom.
Fig. 11
Voltage adjustment with external voltage U
ext
a)
U
o ≈ 0...110%
U
o nom, using
U
ext between R (14) and
G (17):
U
o
U
ext
U
ext ≈ 2.5 V • –––––
U
o ≈
U
o nom • –––––
U
o nom 2.5 V
Fig. 12
Voltage adjustment with external resistor R
1
or R
2
b)
U
o ≈ 0...100%
U
o nom, using
R
1 between R (14) and
G (17):
R
14000 Ω •
U
o
U
o ≈
U
o nom • –––––––––––
R
1 ≈––––––––––
R
1 + 4000 Ω
U
o nom -
U
o
c)
U
o ≈
U
o nom...
U
o max, using
R
2 between R (14) and
Vo1+ (20):
U
o max =
U
o nom + 10%
4000 Ω •
U
o • (
U
o nom – 2.5 V)
R
2 ≈––––––––––––––––––––––––
2.5 V • (
U
o –
U
o nom)
U
o nom • 2.5 V •
R
2
U
o ≈––––––––––––––––––––––––––––––––
2.5 V • (
R
2 + 4000 Ω) –
U
o nom • 4000 Ω
Vo1+
R
+
4000 Ω
G
U
ref
U
ext
–
+
06087
Caution: To prevent damage,
U
ext should not exceed
8 V, nor be negative.
Vo1+
R–
+
G
4000 Ω
U
ref
R
1
R
2
06088
Caution: To prevent damage,
R
2 should never be less
than 47 kΩ.
Note: R inputs of n units with paralleled outputs may be
paralleled, too, but if only one external resistor is to be
used, its value should be R1/n, or R2/n respectively.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 12/25
Display Status of LEDs
U
o1
> 0.95...0.98
U
o1 adj
U
i max
U
i ov
U
i min
U
i uv
U
i
U
i abs
OK
i
U
o1
> 0.95...0.98
U
o1 adj
I
o nom
I
oL
I
o
OK
I
o L
U
o1
< 0.95...0.98
U
o1 ad
j
T
C
i
T
C max
T
PTC threshold
U
i inh
i
+50 V
+0.8 V +2.4 V
-50 V
U
inh threshold
I
o L
LED off LED on
LED Status undefined
06002
Fig. 13
LEDs
"OK"
and
"i"
status versus input voltage
Conditions: I
o
≤
I
o nom
, T
C
≤
T
C max
, U
inh
≤
0.8 V
U
i uv
= undervoltage lock-out, U
i ov
= overvoltage lock-out
LED
"OK"
and
"Io L"
status versus output current
Conditions: U
i min...
U
i max
, T
C
≤
T
C max
, U
inh
≤
0.8 V
LED
"i"
versus case temperature
Conditions: U
i min...
U
i max
, I
o
≤
I
o nom
, U
inh
≤
0.8 V
LED
"i"
versus U
inh
Conditions: U
i min...
U
i max
, I
o
≤
I
o nom
, T
C
≤
T
C max
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 13/25
which typically occur in most installations, but especially in
battery driven mobile applications. The M series has been
successfully tested to the following specifications:
Electromagnetic Compatibility (EMC)
A suppressor diode or a metal oxide VDR (depending upon
the type) together with an input fuse and an input filter form
an effective protection against high input transient voltages
Electromagnetic Immunity
Table 9: Immunity type tests
Phenomenon Standard 1 Level Coupling Value Waveform Source Test In Per-
mode 2 applied imped. procedure oper. form. 3
1 MHz burst IEC III i/o, i/c, o/o, o/c 2500 Vp400 damped 200 Ω2 s per yes A
disturbance 60255-22-1 +i/–i, +o/–o 1000 Vp1 MHz waves/s coupling mode
Voltage surge IEC 60571-1 –i/c, +i/–i 800 Vp100 µs 100 Ω1 pos. and 1 neg. yes A
1500 Vp50 µsvoltage surge per
3000 Vp5 µscoupling mode
4000 Vp1 µs
7000 Vp100 ns
Supply related RIA 12 A 4 +i/–i3.5 •
U
batt 2/20/2 ms 0.2 Ω1 positive yes A
surge B1.5 •
U
batt 0.1/1/0.1 s surge
EN 50155 1.4 •
U
batt 1 Ω
Direct transient RIA 12 C –i/c, +i/–i 960 Vp10/100 µs5 Ω5 pos. and 5 neg. yes A
EN 50155 D 1800 Vp5/50 µsimpulses
(for EN 50155 E 3600 Vp0.5/5 µs 100 Ω
levels D, G,
F 4800 Vp0.1/1 µs
H and L only)
G 8400 Vp0.05/0.1 µs
Indirect coupled H –o/c, +o/–o, –o/–i 1800 Vp5/50 µs
transient J 3600 Vp0.5/5 µs
K 4800 Vp0.1/1 µs
L 8400 Vp0.05/0.1 µsA
5
Electrostatic IEC/EN 4 contact discharge 8000 Vp1/50 ns 330 Ω10 positive and yes A 6
discharge 61000-4-2 air discharge 15000 Vp10 negative
(to case) discharges
Electromagnetic IEC/EN x antenna 20 V/m AM 80% n.a. 26…1000 MHz yes A 5
field 61000-4-3 1 kHz
Electromagnetic ENV 50204 4 30 V/m 50% duty cycle, 900 ±5 MHz yes A
field, 200 Hz repetition
pulse modulated frequency
Electrical fast IEC/EN 3 direct, i/c, +i/–i 2000 Vpbursts of 5/50 ns 50 Ω1 min positive yes A 5
transient/burst 61000-4-4 4 4000 Vp2.5/5 kHz over 1 min negative B
15 ms; burst transients per
period: 300 ms coupling mode
Surge IEC/EN 4 i/c 4000 Vp1.2/50 µs 12 Ω5 pos. and 5 neg. yes A
61000-4-5 3+i/–i 2000 Vp2 Ωsurges per
x i/c, +i/–i 2500 Vp10/700 µs 40 Ωcoupling mode
Conducted IEC/EN 3 i, o, signal wires 10 Vrms AM 80% 150 Ω0.15...80 MHz yes B
disturbances 61000-4-6 (140 dBµV) 1 kHz
1Related and previous standards are referenced in:
Technical Information: Standards
.
2i = input, o = output, c = case.
3A = Normal operation, no deviation from specifications, B = Temporary deviation from specs possible.
4Only met with extended input voltage range of BM (24 V battery), CM (48 V battery) and EM (110 V battery) types. These units are
available on customer's request. Standard DM units (110 V battery) will not be damaged, but overvoltage lock-out will occur during the
surge.
5 For converters with 3 output voltages, temporary deviation from specs possible.
6With class II equipment (CMZ, DMZ, LMZ) only met if case is earthed.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 14/25
Table 10: Emissions at U
i nom
and I
o nom
(LM/LMZ at 230 V AC)
Types Level
CISPR11/EN 55011 CISPR14/
CISPR22/EN 55022 EN 55014
≤30 MHz ≥30 MHz ≥30 MHz
AM 1000 B B <limit
AM 2000 B B <limit
AM 3000 B B <limit
BM 1000 B A <limit
BM 2000 B B <limit
BM 3000 B A <limit
CM 1000 B B <limit
CM 2000 B B <limit
CM 3000 B A <limit
DM 1000 B B <limit
DM 2000 B B <limit
DM 3000 B A <limit
EM 1000 B B <limit
EM 2000 B B -
EM 3000 B A -
FM 1000 B A <limit
FM 2000 B A >limit
FM 3000 B A -
LM 1000 B B <limit
LM 2000 B B <limit
LM 3000 B A <limit
CMZ 1000 B A <limit
CMZ 2000 - - -
CMZ 3000 A >A >limit
DMZ 1000 - - -
DMZ 2000 - - -
DMZ 3000 A A >limit
LMZ 1000 B A <limit
LMZ 2000 - - -
LMZ 3000 A A >limit
Electromagnetic Emissions
Fig. 14
Typical disturbance voltage (quasi-peak) at the input accord-
ing to CISPR 11/22 and EN 55011/22, measured at U
i nom
and I
o nom
.
Fig. 15
Typical radiated electromagnetic field strength (quasi-
peak) according to CISPR 11/22 and EN 55011/22, nor-
malized to a distance of 10 m, measured at U
i nom
and
I
o nom
.
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
07007
A
B
50
40
30
20
10
0
30
50
100
200
500
1000
[dBµV/m]
[MHz]
A
B
07036
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 15/25
Table 13: MTBF
Values at specified Module types Ground benign Ground fixed Ground mobile Unit
case temperature 40°C40°C70°C50°C
MTBF 1 A...LM 1000 and C...LMZ 1000 320'000 130'000 40'000 35'000 h
A...LM 2000 and C...LMZ 2000 255'000 105'000 32'000 28'000
A...LM 3000 and C...LMZ 3000 225'000 80'000 28'000 25'000
Device hours 2 A...LM 1000 and C...LMZ 1000 880'000
A...LM 2000 and C...LMZ 2000 720'000
A...LM 3000 and C...LMZ 3000 740'000
1Calculated in accordance with MIL-HDBK-217E (calculation according to edition F would show even better results)
2Statistical values, based on an average of 4300 working hours per year and in general field use, over 3 years
Immunity to Environmental Conditions
Table 11: Mechanical stress
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) MIL-STD-810D section 514.3 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)
Fda Random vibration IEC 60068-2-35 Acceleration spectral density: 0.05 gn2/Hz Unit
wide band DIN 40046 part 23 Frequency band: 20...500 Hz operating
Reproducibility Acceleration magnitude: 4.9 gn rms
high 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 12: Temperature specifications, valid for an air pressure of 800...1200 hPa (800...1200 mbar)
Temperature Standard -7 Option -9
Characteristics Conditions min max min max Unit
T
AAmbient temperature 1 Operational 2 –25 71 –40 71 °C
T
CCase temperature 3 –25 95 –40 95
T
SStorage temperature 1 Non operational –40 100 –55 100
1MIL-STD-810D section 501.2 and 502.2.
2See:
Thermal Considerations
.
3Overtemperature lock-out at
T
C >95°C (PTC).
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 16/25
Mechanical Data
Dimensions in mm. Tolerances ±0.3 mm unless otherwise indicated.
Fig. 16
DC-DC converter in case M02, weight 770 g (approx.).
Case aluminium, black finish and self cooling.
111.2
±0.8
(3U)
88
(11.6)
168.5
±0.5
127
173.7
±0.5
20
100
±0.6
1.6
6TE
2
5
8
11
14
17
20
23
26
29
32
Male connector H11 according to DIN 41 612
(Gold plated contacts on customer's request)
38.7
95
±0.5
Measuring point for
case temperatureT
C
M 3; depth = 4 mm
(chassis mount)
22
68
159.4
Mounting plane of
connector H11
5.08
10.16
15.24
20.32
25.40
30.48
2TE
7.09
17.25
28.6
34
15
4
Mounting holes for retaining clips V
12.17
103
3.27
20.5 12.1
94.5
±0.1
0
31.5
±0.1
0
ø 3.5
ø 4.0
I
oL
(LED red)
Test sockets (option A)
Potentiometer(s) (option P)
OK (LED green)
Inhibit i (LED red)
Potentiometer (option D)
or potentiometer (option V)
Front plate
Main
face Rear
face
Back plate
22.30
09012
European
Projection
Note: Long case, elongated by 60 mm for 220 mm rack
depth, is available on request.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 17/25
Table 14: Pin allocation
Electrical determination A…LM 1000 C...LMZ 1000 A…LM 2000 C...LMZ 2000 A…LM 3000 C...LMZ 3000
Pin Ident Pin Ident Pin Ident Pin Ident Pin Ident Pin Ident
Inhibit control input 2 i 2 i 2 i 2 i 2 i 2 i
Safe Data or ACFAIL 5 D or V 5 D or V 5 D or V 5 D or V 5 D or V 5 D or V
Output voltage (positive) 8 Vo1+ 8 Vo1+ 8 8 8 Vo3+ 8 Vo3+
Output voltage (negative) 11 Vo1–11 Vo1–11 11 11 Vo3–11 Vo3–
Control input + 1 14 R 14 R
Control input –17 G 17 G
Output voltage (positive) 14 Vo2+ 14 Vo2+ 14 Vo2+ 14 Vo2+
Output voltage (negative) 17 Vo2–17 Vo2–17 Vo2–17 Vo2–
Output voltage (positive) 20 Vo1+ 20 Vo1+ 20 Vo1+ 20 Vo1+ 20 Vo1+ 20 Vo1+
Output voltage (negative) 23 Vo1–23 Vo1–23 Vo1–23 Vo1–23 Vo1–23 Vo1–
Protective earthing 2 26 26 26
DC input voltage 3 29 Vi+ 29 Vi+ 29 Vi+ 29 Vi+ 29 Vi+ 29 Vi+
DC input voltage 32 Vi–32 Vi–32 Vi–32 Vi–32 Vi–32 Vi–
AC input voltage 4 29 N 29 N 29 N 29 N 29 N 29 N
AC input voltage 32 P 32 P 32 P 32 P 32 P 32 P
1This function is not simultaneously available with option P 3 AM, BM, CM, DM, EM, FM and CMZ, DMZ types
2Leading pin (pregrounding) 4 LM and LMZ types
Safety and Installation Instructions
Connector Pin Allocation
The connector pin allocation table defines the electrical
potentials and the physical pin positions on the H11 con-
nector. Pin no. 26, the protective earth pin present on all
AM…LM (class I equipment) DC-DC converters is leading,
ensuring that it makes contact with the female connector
first.
32 29 26 23 20 17 14 11 852
10015
Fig. 17
View of male H11 connector.
Installation Instructions
The M series DC-DC converters are components, intended
exclusively for inclusion within other equipment by an in-
dustrial assembly operation or by professional installers. In-
stallation must strictly follow the national safety regulations
in compliance with the enclosure, mounting, creepage,
clearance, casualty, markings and segregation require-
ments of the end-use application. See also:
Technical Infor-
mation: Installation and Application.
Connection to the system shall be made via the female con-
nector H11 (see
Accessories
)
.
Other installation methods
may not meet the safety requirements.
AM...LM DC-DC converters (class I equipment) are pro-
vided with pin no. 26 ( ), which is reliably connected with
their case. For safety reasons it is essential to connect this
pin with the protective earth of the supply system if required
in:
Safety of operator accessible output circuit
.
An input fuse is built-in in the connection from pin no. 32
(Vi– or P ) of the unit. Since this fuse is designed to protect
the unit in case of an overcurrent and does not necessarily
cover all customer needs, an external fuse suitable for the
application and in compliance with the local requirements
might be necessary in the wiring to one or both input pins
(no. 29 and/or no. 32).
Important: Whenever the inhibit function is not in use,
pin 2 (i) should be connected to pin 23 (Vo1–) to enable
the output(s).
Do not open the modules, or guarantee will be invali-
dated.
Make sure that there is sufficient air flow possible for con-
vection cooling. This should be verified by measuring the
case temperature when the unit is installed and operated in
the end-use application. The maximum specified case tem-
perature
T
C max shall not be exceeded. See also:
Thermal
Considerations.
If the end-product is to be UL certified, the temperature of
the main isolation transformer should be evaluated as part
of the end-product investigation.
Protection Degree
Condition: Female connector fitted to the unit.
IP 40: All units, except those with options P, A or K, and
except those with option D or V with potentiometer.
IP 30: All units fitted with options A or K, except those with
option P, and except those with option D or V with
potentiometer.
IP 20: All units fitted with option P, or with option D or V with
potentiometer.
Cleaning Agents
In order to avoid possible damage, any penetration of liq-
uids (e.g. cleaning fluids) is to be prevented, since the
power supplies are not hermetically sealed.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 18/25
Isolation
The electric strength test is performed as a factory test in
accordance with IEC/EN 60950 and UL 1950 and should
not be repeated in the field. Power-One will not honour any
Table 15: Isolation
Characteristic Input to Input to Input to Input to Output to Output to Output to Unit
case case output output case case output
class I class II class I class II option H
Electric Required according to 1.5 3.0 3.0 1 3.0 0.5 0.5 - kVrms
strength IEC/EN 60950 2.1 4.2 4.2 1 4.2 0.7 0.7 - kV DC
test voltage Actual factory test 1 s 2.8 5.6 5.6 1 5.6 1.4 2.8 0.3
AC test voltage equivalent 2.0 4.0 4.0 1 4.0 1.0 2.0 0.2 kVrms
to actual factory test
Insulation resistance at 500 V DC >300 >300 >300 >300 >300 >300 >100 2 MΩ
1In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage.
2Tested at 300 V DC.
For creepage distances and clearances refer to:
Technical Information: Safety.
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 the IEC/EN
60950 related safety standards.
Since the M series DC-DC converters provide double or re-
inforced insulation between input and output, based on a
rated primary input voltage of 250 V AC and 400 V DC (for
class II units 250 V AC and DC), only operational insulation
is needed between the AC mains and the input of the DC-
DC converter. This means that there is no need for an elec-
trical isolation between the AC mains circuit and the DC-DC
converter input circuit to cause the output of an M series
DC-DC converter to be an SELV circuit. Only voltage
adaption and rectification to the specified input voltage
range of the DC-DC converter is needed.
The following table shows a possible installation configura-
tion, compliance with which causes the output circuit of the
DC-DC converter to be an SELV circuit according to IEC/
EN 60950 up to a configured output voltage (sum of nomi-
nal voltages if in series or +/– configuration) of 36 V.
However, it is the sole responsibility of the installer to as-
sure the compliance with the relevant and applicable safety
regulations. More information is given in:
Technical Infor-
mation:
Safety
.
Table 16: Safety concept leading to an SELV output circuit
Conditions Front end DC-DC converter Result
Nominal Minimum required grade Maximum rated Minimum required Equip- Measures to achieve the Safety status
supply of insulation, to be pro- DC output voltage safety status of the ment specified safety status of of the DC-DC
voltage vided by the AC-DC front from the front end front end output the output circuit converter
end, including mains circuit output circuit
supplied battery charger
Mains Operational (i.e. there is ≤400 V 1 (The Primary circuit Class I Double or reinforced SELV circuit
≤250 V AC no need for electrical rated voltage (A...LM) insulation, based on
isolation between the between any input 250 V AC and 400 V DC
mains supply voltage and pin and earth can (provided by the DC-DC
theDC-DC converter be up to 250 V AC converter) and earthed
input voltage) or 400 V DC) case 2
≤250 V 1 (The Class II Double or reinforced
rated voltage (CMZ, insulation, based on
between any input DMZ, 250 V AC or DC (provided
pin and earth can LMZ) by the DC-DC converter)
be up to 250 V AC
or DC)
1The front end output voltage should match the specified operating 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.
guarantee/warranty claims resulting from electric strength
field tests.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 19/25
Table 18: Configuration of option A and option P
Type of option AM...LM/CMZ...LMZ 1000 AM...LM/CMZ...LMZ 2000 AM...LM/CMZ...LMZ 3000
Output 1 Output 1 Output 2 Output 1 Output 2 Output 3
Potentiometer 1 yes yes yes yes no no
Test sockets yes yes yes yes no no
1AM...LM 1000 types equipped with option P do not provide the R input simultaneously, pins 14 and 17 are not connected.
-9 Extended Temperature Range
Option -9 extends the operational ambient temperature
range from –25...71°C (standard) to –40...71°C. The power
supplies provide full nominal output power with convection
cooling.
A Test Sockets
Test sockets (pin Ø = 2 mm, distance d = 5.08 mm) are lo-
cated at the front of the module. The output voltage is
sensed at the connector pins inside the module.
P Potentiometer
Optionally built-in multi-turn potentiometers provide an out-
put voltage adjustment range of minimum ±5% of
U
o nom
and are accessible through holes in the front cover. Com-
pensation of voltage drop across connector and wiring be-
comes easily achievable. For output voltages
U
o >
U
o nom,
the minimum input voltage according to:
Electrical Input
Data
increases proportionally to
U
o/
U
o nom.
Note: Potentiometers are not recommended for mobile ap-
plications.
Description of Options
Table 17: Survey of options
Option Function of option Characteristic
–9 Extended operational ambient temperature range
T
A = –40...71°C
A Test sockets at front panel for check of output voltage
U
o internally measured at the connector terminals
E Electronic inrush current limitation circuitry Active inrush current limitation for CM, EM, LM, CMZ, LMZ
P 1 Potentiometer for fine adjustment of output voltage Adjustment range ±5% of
U
o nom, excludes R input
F Input fuse built-in inside case Fuse not externally accessible
H Enhanced output to case electric strength test voltage 2000 V AC (standard: 1000 V AC)
D 2Input and/or output undervoltage monitoring circuitry Safe data signal output (D0...D9)
V 2 3 Input and/or output undervoltage monitoring circuitry ACFAIL signal according to VME specifications (V0, V2, V3)
1Function R excludes option P and vice versa
2Option D excludes option V and vice versa
3Only available if main output voltage
U
o1 = 5.1 V
AC-DC
front
end
DC-DC
con-
verter
Mains Battery SELV
Earth connection
(class I)
+
–
~
~
10018
Max. 250 V AC or
400 (250) V DC
Max. 250 V AC or
400 (250) V DC
Fuse
Fuse
Fig. 18
Schematic safety concept.
Use earth connection as per table:
Safety concept leading
to an SELV output circuit
. Use fuse if required by the appli-
cation. See also:
Installation Instructions
.
Standards and Approvals
AM...LM DC-DC converters correspond to class I equip-
ment, while CMZ, DMZ, LMZ types correspond to class II
equipment. All types 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.
The units have been evaluated for:
•Building in
•Basic insulation between input and case and double or
reinforced insulation between input and output, based on
250 V AC and 400 V DC (class I equipment)
•Double or reinforced insulation between input and case
and between input and output, based on 250 V AC and
DC (class II equipment)
•Operational insulation between output(s) and case
•Operational insulation between the outputs
•The use in a pollution degree 2 environment
•Connecting the input to a primary or secondary circuit
with a maximum transient rating of 2500 V
The DC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and with ISO 9001 standards.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 20/25
Fig. 20
Typical inrush current waveforms of CM, CMZ, EM, LM
and LMZ DC-DC converter with option E
Precautions:
In order to avoid overload of the series resistor RI the on/off
switching cycle should be limited to 12 s if switched on/off
continuously. There should not be more than 10 start-up
cycles within 20 s at a case temperature of 25°C.
If CM and CMZ types are driven by input voltages below
35 V DC or LM and LMZ types below 100 V AC, the maxi-
mum case temperature should be derated by 10 K or the to-
tal output power should be derated by 20%. EM, LM and
LMZ units driven by DC input voltages do not need to be
derated within the full specified input voltage range.
Availability:
Option E is available for CM, EM, LM and CMZ, LMZ mod-
ules with a nominal output power of 51 W maximum.
Input Filter
Control
Converter
FET
C
i
R
I
R
S
Rectifier
(LM/LMZ types)
11018
Fig. 19
Option E block diagram
Table 19: Inrush current characteristics with option E
Characteristic CM, CMZ EM, LM, LMZ EM, LM, LMZ Unit
at
U
i = 110 V DC at
U
i = 110 V DC at
U
i = 372 V DC
typ max typ max typ max
I
inr p Peak inrush current 6.5 8 2.2 4 7.3 10 A
t
inr Inrush current duration 22 30 10 20 20 40 ms
E Electronic Inrush Current Limitation
Available for CM, EM, LM and CMZ, LMZ types.
The standard version of the modules CM, DM, EM, LM as
well as CMZ, DMZ, LMZ include a passive inrush current
limitation in the form of a NTC resistor.
For applications which require an improved inrush current
limitation, an active electronic circuit as shown in fig.
Option
E block diagram
has been developed. Typical inrush cur-
rent waveforms of units equipped with this option are
shown below.
CM and CMZ units meet the CEPT/ETSI standards for 48 V
DC supply voltage according to ETS 300132-2 if fitted with
option E combined with option D6 (input voltage monitor-
ing). Option D6, externally adjustable via potentiometer, is
necessary to disable the converter at input voltages below
the actual service ranges, avoiding an excessive input cur-
rent when the input voltage is raised slowly according to
ETS 300132-2. Option D6 threshold level
U
ti
+
U
hi
(refer to
description of option D) should be adjusted to 36.0...40.5 V
for 48 V DC nominal supply voltage (for 60 V DC systems,
threshold should be set to 44.0...50.0 V DC). The D output
(pin 5) should be connected to the inhibit (pin 2). For appli-
cations where potentiometers are not allowed refer to op-
tion D9.
12
10
8
6
4
2
0
010 20 30 40
t [ms]
I
i
[A]
t
inr
Normal operation
(FET fully conducting)
I
i
= P
o
/(U
i
• η)
11019
t
inr
CM, CMZ at 110 V DC
EM, LM, LMZ at 372 V DC
EM, LM, LMZ at 110 V DC
F Fuse Not Accessible
The standard M units have a fuseholder containing a 5 × 20
mm fuse which is externally accessible and to be found in
the back plate near the connector. Some applications re-
quire an inaccessible fuse. Option F provides a fuse moun-
ted directly onto the main PCB inside the case.
The full self-protecting functions of the module do normally
not lead to broken fuses, except as a result of inverse polar-
ity at the input of an AM, BM, CM, FM or CMZ type or if a
power component inside fails (switching transistor, free-
wheeling diode, etc). In such cases the defective unit has to
be returned to Power-One for repair.
H Enhanced Electric Strenght Test
Electric strength test voltage output to case 2800 V DC
(2000 V AC) instead of 1400 V DC (1000 V AC).
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 21/25
D Undervoltage Monitor
The input and/or output undervoltage monitoring circuit op-
erates independently of the built-in input undervoltage lock-
out circuit. A logic "low" (JFET output) or "high" signal (NPN
output)
is generated at pin 5 as soon as one of the moni-
tored voltages drops below the preselected threshold level
U
t. The return for this signal is Vo1– (pin 23). The D output
recovers when the monitored voltage(s) exceed(s)
U
t+
U
h.
JFET output (D0…D4):
Connector pin D is internally connected via the drain-
source path of a JFET (self-conducting type) to the nega-
tive potential of output 1.
U
D ≤ 0.4 V (logic low) corresponds
to a monitored voltage level (
U
i and/or
U
o1) <
U
t. The current
I
D through the JFET should not exceed 2.5 mA. The JFET is
protected by a 0.5 W Zener diode of 8.2 V against external
overvoltages.
U
i,
U
o1 status D output,
U
D
U
i or
U
o1 <
U
tlow, L,
U
D ≤ 0.4 V at
I
D = 2.5 mA
U
i and
U
o1 >
U
t +
U
hhigh, H,
I
D ≤ 25 µA at
U
D = 5.25 V
NPN output (D5...D9):
Connector pin D is internally connected via the collector-
emitter path of a NPN transistor to the negative potential of
output 1.
U
D ≤ 0.4 V (logic low) corresponds to a monitored
voltage level (
U
i and/or
U
o1) >
U
t +
U
h. The current
I
D
through the open collector should not exceed 20 mA. The
NPN output is not protected against external overvoltages.
U
D should not exceed 40 V.
U
i,
U
o1 status D output,
U
D
U
i or
U
o1 <
U
thigh, H,
I
D ≤ 25 µA at
U
D = 40 V
U
i and
U
o1 >
U
t +
U
hlow, L,
U
D ≤ 0.4 V at
I
D = 20 mA
Vo1+
Vo1–
D
U
D
I
D
R
p
Input
11007
Table 20: Undervoltage monitor functions
Output type Monitoring Minimum adjustment range Typical hysteresis
U
h [% of
U
t]
JFET NPN
U
i
U
o1 of threshold level
U
tfor
U
t min...
U
t max
U
ti
U
to
U
hi
U
ho
D1 D5 no yes –3.5 V...48 V 1 –2.3...1
D2 D6 yes no
U
i min...
U
i max 1 –3.0...0.5 –
D3 D7 yes yes
U
i min...
U
i max 1 0.95...0.98
U
o1 2 3.0...0.5 "0"
D4 D8 no yes
–
0.95...0.98
U
o1 2
–
"0"
D0 D9 no yes –3.5 V...48 V 3 –1.8...1
yes no
U
i min...
U
i max 3 4 –2.2...0.4 –
yes yes
U
i min...
U
i max 3 4 0.95...0.98
U
o1 2 2.2...0.4 "0"
1Threshold level adjustable by potentiometer (not recommended for mobile applications)
2Fixed value between 95% and 98% of
U
o1 (tracking)
3Fixed value, resistor-adjusted according to customer's specifications ±2% at 25°C; individual type number is determined by Power-
One
4Adjusted at
I
o nom
Fig. 21
Options D0...D4, JFET output
Fig. 22
Options D5...D9, NPN output
Vo1+
Vo1–
D
U
D
I
D
R
p
Input
11006
The threshold level
U
t is either adjustable by a potentio-
meter, accessible through a hole in the front cover, or is fac-
tory adjusted to a fixed value specified by the customer.
Option D exists in various versions D0...D9 as shown in the
following table.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 22/25
0
1
0.95
0
U
i
[V DC]
0
t
t
t
t
low min4
t
low min4
t
high min
t
h1
U
ti
+
U
hi
U
ti
Input voltage failure Switch-on cycle Input voltage sag Switch-on cycle and subsequent
input voltage failure
U
D high
U
D low
U
D
0
JFET
NPN
t
U
o1
U
o1 nom
U
D high
U
D low
U
D
t
low min4
t
h1
0
0
U
D high
U
D low
U
D
0
JFET
NPN
U
o1
U
D high
U
D low
U
D
t
low min4
U
to
3
Output voltage failure
0
I
D high
I
D low
I
D
t
0
I
D high
I
D low
I
D
t
t
t
t
3
2
33 33
U
o1 nom
U
to
+
U
ho
Input voltage monitoring
Output voltage monitoring
11008
Threshold tolerances and hysteresis:
If
U
i is monitored, the internal input voltage after the input
filter and rectifier (EM, LM and LMZ types) is measured.
Consequently this voltage differs from the voltage at the
connector pins by the voltage drop D
U
ti across input filter
and rectifier. The threshold level of the D0 and D9 options is
factory adjusted at nominal output current
I
o nom and at
T
A =
25°C. The value of D
U
ti depends upon the input voltage
range (AM, BM, ...), threshold level
U
t, temperature and in-
put current. The input current is a function of the input volt-
age and the output power.
Fig. 24
Relationship between U
i
,
U
o1
,
U
D
,
I
D
and U
o1
/U
o nom
versus time.
D
U
ti
U
hi
U
D low
U
D
U
D high
U
i
P
o
=
P
o nom
P
o
= 0
P
o
= 0
U
ti
P
o
=
P
o nom
11021
Fig. 23
Definition of U
ti, D
U
ti
and
U
hi
(JFET output)
1See:
Electrical Output Data
, for hold-up time.
2With output voltage monitoring the hold-up time
t
h = 0
3The D signal remains high if the D output is connected to
an external source.
4
t
low min = 40...200 ms, typically 80 ms
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 23/25
V ACFAIL Signal (VME)
Available for units with
U
o1 = 5.1 V. This option defines an
undervoltage monitoring circuit for the input or the input and
main output voltage equivalent to option D and generates
the ACFAIL signal (V signal) which conforms to the VME
standard. The low state level of the ACFAIL signal is speci-
fied at a sink current of
I
V = 48 mA to
U
V ≤ 0.6 V (open-col-
lector output of a NPN transistor). The pull-up resistor feed-
ing the open-collector output should be placed on the VME
backplane.
After the ACFAIL signal has gone low, the VME standard
requires a hold-up time
t
h of at least 4 ms before the 5.1 V
output drops to 4.875 V when the 5.1 V output is fully
loaded. This hold-up time
t
h is provided by the internal input
capacitance. Consequently the working input voltage and
the threshold level
U
ti should be adequately above the mini-
mum input voltage
U
imin of the converter so that enough
energy is remaining in the input capacitance. If the input
voltage is below the required level, an external hold-up ca-
pacitor (
C
i ext) should be added.
Formula for threshold level for desired value of
t
h:
2 •
P
o • (
t
h + 0.3 ms) • 100
U
ti = ––––––––––––––––––––– +
U
i min2
C
i min •
η
V output (V0, V2, V3):
Connector pin V is internally connected to the open collec-
tor of a NPN transistor. The emitter is connected to the
negative potential of output 1.
U
V ≤ 0.6 V (logic low) corre-
sponds to a monitored voltage level (
U
i and/or
U
o1) <
U
t.
The current
I
V through the open collector should not exceed
50 mA. The NPN output is not protected against external
overvoltages.
U
V should not exceed 80 V.
U
i,
U
o1 status V output,
U
V
U
i or
U
o1 <
U
tlow, L,
U
V ≤ 0.6 V at
I
V = 50 mA
U
i and
U
o1 >
U
t +
U
hhigh, H,
I
V ≤ 25 µA at
U
V = 5.1 V
Vo1+
Vo1–
V
U
V
I
V
R
p
Input
11009
voltage(s) exceed(s)
U
t +
U
h. The threshold level
U
t is either
adjustable by a potentiometer, accessible through a hole in
the front cover, or is factory adjusted to a determined cus-
tomer specified value.
Versions V0, V2 and V3 are available as shown below.
Option V operates independently of the built-in input under-
voltage lock-out circuit. A logic "low" signal is generated at
pin 5 as soon as one of the monitored voltages drops below
the preselected threshold level
U
t. The return for this signal
is Vo1– (pin 23). The V output recovers when the monitored
Table 22: Undervoltage monitor functions
V output Monitoring Minimum adjustment range Typical hysteresis
U
h [% of
U
t]
(VME compatible) of threshold level
U
tfor
U
t min...
U
t max
U
i
U
o1
U
ti
U
to
U
hi
U
ho
V2 yes no
U
i min...
U
i max 1 –3.0...0.5 -
V3 yes yes
U
i min...
U
i max 1 0.95...0.98
U
o1 2 3.0...0.5 "0"
V0 yes no
U
i min...
U
i max 3 4 - 2.2...0.4 -
yes yes
U
i min...
U
i max 3 4 0.95...0.98
U
o1 2 2.2...0.4 "0"
1 Threshold level adjustable by potentiometer (not recommended for mobile applications). 2 Fixed value between 95% and 98% of
U
o1
(tracking), output undervoltage monitoring is not a requirement of VME standard. 3 Adjusted at
I
o nom.
4 Fixed value, resistor-adjusted (±2% at 25°C) acc. to customer's specifications; individual type number is determined by Power-One.
Table 21: Available internal input capacitance and factory potentiometer setting of U
t i
with resulting hold-up time
Types AM BM CM/CMZ DM/DMZ EM FM LM/LMZ Unit
C
i min 2.6 0.67 0.37 0.14 0.14 0.37 0.14 mF
U
t i 9.5 19.5 39 61 104 39 120 V DC
t
h0.34 0.69 1.92 1.73 6.69 2.92 8.18 ms
Fig. 25
Output configuration of options V0, V2 and V3
Formula for additional external input capacitor
2 •
P
o • (
t
h + 0.3 ms) • 100
C
i ext = ––––––––––––––––––––– –
C
i min
η
• (
U
ti 2 –
U
i min2)
where as:
C
i min = minimum internal input capacitance [mF], accord-
ing to the table below
C
i ext = external input capacitance [mF]
P
o= output power [W]
η
= efficiency [%]
t
h= hold-up time [ms]
U
i min = minimum input voltage [V]
U
ti = threshold level [V]
Remarks: The threshold level
U
ti of option V2 and V3 is ad-
justed during manufacture to a value according to the table
below. A decoupling diode should be connected in series
with the input of AM, BM, CM, DM and FM converters to
avoid the input capacitance discharging through other
loads connected to the same source voltage. If LM or LMZ
units are AC powered, an external input capacitor cannot
be applied unless an additional rectifier is provided.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 24/25
3
5.1 V
4.875 V
0
U
i [V DC]
0
t
t
U
ti +
U
hi
U
ti
Input voltage failure Switch-on cycle Input voltage sag Switch-on cycle and subsequent
input voltage failure
U
V high
U
V low
U
V
0
V2
t
U
o1
0
U
V high
U
V low
U
V
0
V2
U
i
U
ti
4
Output voltage failure
0
U
V high
U
V low
U
V
3
U
ti +
U
hi
t
low min 2
t
low min 2
t
low min 2
33
4
4
U
V high
U
V low
U
V
0
V3
t
3
t
low min 2
t
low min 2
33
t
h 1
2.0 V
t
h 1
4
3
4
t
low min 2
V3
5.1 V
4.875 V
0
U
o1
2.0 V
Input voltage monitoring
Output voltage monitoring
11010
t
t
t
t
Threshold tolerances and hysteresis:
If
U
i is monitored, the internal input voltage is measured af-
ter the input filter and rectifier (EM, LM and LMZ types).
Consequently this voltage differs from the voltage at the
connector pins by the voltage drop ∆
U
t i across input filter
and rectifier. The threshold level of option V0 is factory ad-
justed at
I
o nom and
T
A = 25°C. The value of ∆
U
t i depends
upon the input voltage range (AM, BM, ...), threshold level
U
t i, temperature and input current. The input current is a
function of input voltage and output power.
Fig. 27
Relationship between U
i
, U
o1
, U
V
, I
V
and U
o1
/U
o nom
versus time.
D
U
ti
U
hi
U
V low
U
V
U
V high
U
i
P
o
=
P
o nom
P
o
= 0
P
o
= 0
U
ti
P
o
=
P
o nom
11023
Fig. 26
Definition of U
ti
,
∆
U
ti
and U
hi
1VME request: minimum 4 ms
2
t
low min = 40...200 ms, typically 80 ms
3
U
V level not defined at
U
o1 < 2.0 V
4The V signal drops simultaneously with the output voltage, if the
pull-up resistor
R
P is connected to Vo1+. The V signal remains
high if
R
P is connected to an external source.
Cassette Style DC-DC Converters M Series
Edition 01/01.2001 25/25
Accessories
A variety of electrical and mechanical accessories are
available including:
–Front panels for 19" rack mounting, Schroff and Intermas
systems.
–Mating H11 connectors with screw, solder, fast-on or
press-fit terminals.
–Connector retention facilities.
–Code key system for connector coding.
–Flexible H11 PCB for mounting of the unit onto a PCB.
–Chassis mounting plates for mounting the 19" cassette to
a chassis/wall where only frontal access is given.
–Universal mounting bracket for DIN-rail or chassis moun-
ting.
For more detailed information please refer to:
Accessory
Products
.
H11 female connector,
Code key system
Front panels
Flexible H11 PCB
Mounting plate,
Connector retention clips
Universal mounting bracket for DIN-rail mounting.
