LV Series
50-200 Watts
Single Outputs
Rev. G
Half-Brick DC/DC Converters
FEATURES
APPLICATIONS
● Soft Start
● For use in 12V and 24V Battery Applications
● For use in Intermediate and Distributed
Bus Architectures (IBA)
● 100% Burn In
● High Reliability
● Telecommunications Equipment
● Network (LANs/WANs) Equipment
● Next Generation Low Voltage, High
Current Microprocessors and ICs
● Remote ON/OFF
● Up to 89% Efficient
● Cost Efficient Solution
● Fast Transient Response
● Fixed Switching Frequency
● Short Circuit and Over Current Protected
● Remote Sense Compensation to 10% Vout
● Optional Heat Sink Available (Consult Factory)
● Optional Encapsulation for Added Ruggedness
DESCRIPTION
The LV is a high density, low input voltage, isolated converter with a wide input voltage range. Low input voltage converters
are uncommon in the industry and the LV series offers the flexibility of operation with both 12V and 24V busses. This state-
of-the-art converter's features include fast transient response, short circuit protection, over current protection, soft start, and
many other features that are required for today's demanding applications.
SPECIFICATIONS: LV Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
PROTECTION SPECIFICATIONS
Input Voltage Range .......................................................9-36VDC
UVLO Turn On at ...................................................... 8.6VDC max
UVLO Turn off at....................................................... 8.5VDC max
Input Filter..............................................See Technical Datasheet
Current Limit ...................................................................110-140%
Short Circuit Protection................................................. Continuous
GENERAL SPECIFICATIONS
Efficiency ............................................................................To 89%
Switching Frequency ...................................................400KHz typ.
Remote ON/OFF ........................... Logic Enable referenced to -Vin,
No suffix........................................... Open/High=ON, Low=OFF
“R” suffix .......................................... Open/High=OFF, Low=ON
Isolation Voltage
Input to Output..........................................................1500VDC
Input to Case ..............................................................500VDC
Output to Case............................................................500VDC
Input Reflected Ripple current..................................... 225mA typ.
Input Surge Voltage .................................. 50VDC max for 100ms
Isolation Resistance.......................................................10MΩ min.
OUTPUT SPECIFICATIONS
ENVIRONMENTAL SPECIFICATIONS
Output Voltage ................................................................see table
Voltage Accuracy ................................................................... ±1%
Output Adjustability .............................................................. ±10%
Output Current ................................................................see table
Output Power ..................................................................see table
Line Regulation (LL to HL at FL) ......................................... ±0.2%
Load Regulation (20% to 100% load).................................. ±0.2%
Ripple/Noise (20 MHz BW) ................................................... 1.5%
Remote Sense Compensation ............................................... 10%
Transient Response (50% load step)..................................250ms
Operating Temperature (case).............................. -40°C ~ +100°C
Storage Temperature.............................................-50°C ~ +125°C
Humidity..............................................................................To 95%
Temperature Coefficient ................................................ ±0.2% / °C
MTBF.................................................................... 2,563,116 hours
PHYSICAL SPECIFICATIONS
Weight ..................................................................................... 4 oz
Dimensions............................................... 2.28 x 2.4 x 0.50 inches
Case Material................................................. thick, aluminum alloy
Due to advances in technology, specifications subject to change without notice
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
03/28/2012
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