SUPLET
®
Technical Specification
LDM1000-48S50CGS Series
36Vdc to 75Vdc Input；50Vdc/20A Output
Document No. SL83K95.A01 Rev. 1.01 Page 1 of 20
RoHS Compliant
Applications
Distributed Power Architectures
Wireless Networks
RF amplifier
Broadband/CATV amplifier
Options
Output Current Monitoring
Description
LDM1000-48S50CGS series are full brick DC/DC converters that provide high efficiency single output. It can operate from
36Vdc to 75Vdc input and 50V/20A output. The output can be trimmed from 25V to 57.6V. The remote control option is
current mode. The converter turns off when the REM pin has not current and turns on when current is 2-5mA. The converter
is off when the REM pin is left open. The output voltage will increase when the Vo1 pin is connected to “+S” and decrease
when TRIM pin connected to “-S”. Standard features include remote on/off, remote sense, output voltage adjustment, over
voltage, over current and over temperature protection.
Features
Compliance with RoHS10 EU Directive 2011/65/EU &
2015/863/EU
Delivers up to 20A output current
High efficiency, typ. 94.5% at Vout half load
Low output ripple and noise
Exceptional thermal performance
Industry standard "Full-brick" footprint
Turn on monotonicity
Remote On/Off logic
Switching frequency (240 KHz typical)
Remote Sense
Input under voltage lockout
Input over voltage protection
Output over voltage protection
Output over current protection
Over temperature protection
Short Circuit Protection
Adjustable output voltage (25V-57.6V)
Meets the voltage and current requirements for ETSI
300-132-2 and complies with Basic Insulation rating per
IEC60950-1
Document No. SL83K95.A01 Rev. 1.01 Page 2 of 20
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the power module. These are absolute
stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in
the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the
power module reliability.
Parameter Units
Specifications
Notes & conditions
Min. Typ. Max.
Input Voltage Vdc
0 - 80 Continuous
0 - 100 Transient(100ms)
Operating Ambient Temperature ℃ -40 - 85
Base Plate Operating
Temperature
℃ -40 - 100
Storage Temperature ℃ -55 - 125 Ambient temperature
Operating Humidity RH(%) 0 - 95 Non-condensing
Storage Humidity RH(%) 0 - 95 Non-condensing
Operating Altitude m 0 - 4,000
Storage Altitude m 0 - 4,000
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and normal temperature
conditions
. Additional Cin=2*470µF(CHEMICON \\ EKY-101ELL471MM25S for reference), Cout=4*680µF(CHEMICON \\
EKY-800ELL681MM25S for reference )