鈾?/div>
HDSL/xDSL Systems
Voice Pair-Gain Systems
Supports Single and Dual Loop Configurations
General Remote Power Feeding Communications Applications
48Vdc, 60Vdc Telecommunications Systems
ETSI Remotely Fed Systems
DESCRIPTION
The PD-LPM-0102EP is a 15 Watt DC/DC converter module especially designed for HDSL/xDSL remote power feeding applications (on LTU).
The module operates from 36 to 72Vdc input voltage and provides two independent balanced outputs of 120V/60mA, isolated from the input.
The output voltage can be reduced, in the range of 105-120V, by adding an external resistor. Reduction of the output voltage to 105-120V may
be required in order to allow for HDSL communication signal superimposing, without exceeding the maximum 120V standard limitation. A high
precision current limiting circuit is implemented on each output. This feature enables delivery of maximum power through the line while
maintaining the TNV safety requirements of maximum 60mA current. The module also provides report lines, which deliver information
regarding unbalanced outputs (deviation of more than 20%) and overload condition of each output. The overload protection circuits on each
output are independent, and allow for one output to work normally while the other is overloaded. The PD-LPM-0102EP is designed to work
optimally while working in conjunction with the PowerDsine PD-NPM-03xx module series. Designed for ETSI specific requirements, the PD-
LPM-0102EP simplifies integration and reduces overall system dimensions, cost and time to market.
TYPICAL APPLICATION
+5V
PD-LPM-0102EP
18 NC
17 Inhibit
16 NC
120V Output1 RTN 1
C
01
Output 1
120V/60mA
120V Output1 2
Earth GND 3
Overload1 4
Overload2 5
Voltage Adjust 6
Earth GND 7
Rext
Off
On
Overload
1
15 Unbl.
Unbalanced
Inhibit
14 Unbl. RTN
13 NC
DGND
Overload
2
12 NC
Fuse
2.5A/250V
-48V
C
in
-48 RTN
11 -48V
10 -48V RTN
120V Output2 8
C
02
Output 2
120V/60mA
120V Output2 RTN 9
Recommended values for C
in
, C
01
, C
02
10碌F Aluminum electrolytic capacitor in parallel to a 1碌F film capacitor.
________________________________
1
The 鈥淓P鈥?suffix to the part number indicates an open frame
module, without epoxy potting, as well as enhanced efficiency and
extended temperature range.
PD-LPM-0102EP
1
2
3
4
