Rugged Environment
DC-DC Converters >100Watt
K Series
150 Watt DC-DC Converters
K Series
Input to output isolation
Single output: AK...EK 1000
Double output: AK...EK 2000
• Extremely wide input voltage range
• Input over- and undervoltage lock-out
• Efficient input filter and built-in surge and transient
suppression circuitry
• 4 kVrms input to output electric strength test
• Fully isolated outputs
• Outputs open- and short-circuit proof
• No derating over entire operating temperature range
Safety according to IEC/EN 60950
LGA
C
111
4.4"
3 U
80
168
6.6"
3.2"
16 TE
Summary
The K series of DC-DC converters represents a broad and
flexible range of power supplies for use in advanced elec-
tronic systems. Features include high efficiency, high reli-
ability, low output voltage noise and excellent dynamic re-
sponse to load/line changes.
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 standards
IEC/EN 60950 and have been approved by the safety
agencies LGA (Germany) and UL (USA). The UL Mark for
Canada has been officially recognized by regulatory au-
thorities in provinces across Canada.
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
input voltage is outside the specified range. Certain types
include an inrush current limitation preventing circuit break-
ers and fuses from being damaged at switch-on.
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 must remain below 95°C under all
conditions.
All outputs are open- and short-circuit proof and are pro-
tected against overvoltages by means of a built-in suppres-
sor diode. The outputs can be inhibited by a logic signal ap-
plied to the connector pin 18 (i). If the inhibit function is not
used pin 18 must be connected with pin 14 to enable the
outputs.
A temperature sensor generates an inhibit signal which
disables the outputs if the case temperature TC 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.
LED indicators display the status of the converter and allow
visual monitoring of the system at any time.
The modules may either be plugged into 19" rack systems
according to DIN 41494, or be chassis mounted.
Table of Contents
Page
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 ......................................................... 14
Electromagnetic Compatibility (EMC) ............................ 18
Immunity to Environmental Conditions........................... 20
Mechanical Data ............................................................ 21
Safety and Installation Instructions ................................ 22
Description of Options.................................................... 25
Accessories .................................................................... 31
Edition 4/4.99
1/31
MELCHER
The Power Partners.