
K-Family
DC-DC Converters >100 W
Rugged Environment
8 - 28
Edition 2/96 - Melcher AG
MELCHER
The Power Partners.
8.1
Type Key and Product Marking
Type Key
C K 2 5 40 -7 E R P D V T B1
Input voltage range
Ui:
8...35 V DC ................................................. A
14...70 V DC ................................................. B
28...140 V DC ................................................ C
44...220 V DC ................................................ D
67...385 V DC 1 ................................................ E
20...100 V DC ................................................. F
88...372 V DC (85…264 V AC) ........................ L
Family
........................................................................ K
Blank
..........................................................................
Number of outputs ....................................................... 1...2
Single output units:
Nominal voltage output 1 (main output)
, Uo1 nom
5.1 V ........................................................ 0, 1, 2
12 V ................................................................. 3
15 V ............................................................. 4, 5
24 V ................................................................. 6
other voltages .............................................. 7, 8
Other specifications for
single output modules ............................ 01...99
Symmetrical double output units:
Nominal voltage output 1/output 2,
Uo1/2 nom
12 V/12 V 2 (24 V series conn. 3) ................... 20
5 V/15 V 2 (30 V series conn. 3) ..................... 40
24 V/24 V 2 (48 V series conn. 3) ................... 60
other symmetrical voltages .................... 70...99
Operational ambient temperature range
TA:
–25…71
°C ..................................................... -7
–40…71
°C (optional) ..................................... -9
customer specific ..................................... -0...-6
Feature:
Output voltage control input 4 ......................... R
Options:
Inrush current limitation 5
E
Potentiometer (output voltage adjustment) 4
P
Save data signal (D0...DD, to be specified) 6 D
ACFAIL signal (V0, V2, V3, to be specified) 6 7 V
Current sharing
T
Cooling plate
B1
1 EK- types available upon customer request.
2 External wiring of main and second output depending upon the desired output configuration (see fig. 17b, c, d or e).
3 External wiring of main and second output (see fig.17a).
4 Feature R excludes option P and vice versa.
5 Option E available for C, D, E and LK types.
6 Option D excludes option V and vice versa.
7 Option V available for AK...LK 1001 types.
Example:
CK 2540-7PD3: DC-DC converter, input voltage range 28...140 V, double output, each providing 15 V/ 5 A,
equipped with potentiometer and undervoltage monitor option.
Accessories: Front panels, female connectors, mounting facilities, etc. please refer to section "Accessories".
Product Marking
Main face:
Basic type designation, applicable safety approval and recognition marks, warnings, pin allocation, Melcher
patents and company logo.
Front plate:
Identification of LED's, test sockets and potentiometers.
Specific type designation, input voltage range, nominal output voltages and output currents, pin allocation of
options and auxiliary functions, fuse specification and degree of protection.
Label:
Batch No., serial No. and data code including production site, modification status of main PCB and date of
production.