Rev. G FEATURES LV Series 50-200 Watts Single Outputs Half-Brick DC/DC Converters APPLICATIONS ● Soft Start ● For use in 12V and 24V Battery Applications ● For use in Intermediate and Distributed ● 100% Burn In Bus Architectures (IBA) ● High Reliability ● Telecommunications Equipment ● Remote ON/OFF ● Network (LANs/WANs) Equipment ● Up to 89% Efficient ● Next Generation Low Voltage, High ● Cost Efficient Solution Current Microprocessors and ICs ● 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 stateof-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 Current Limit ................................................................... 110-140% UVLO Turn On at ...................................................... 8.6VDC max Short Circuit Protection ................................................. Continuous UVLO Turn off at ....................................................... 8.5VDC max GENERAL SPECIFICATIONS Input Filter ..............................................See Technical Datasheet Efficiency ............................................................................ To 89% Remote ON/OFF ........................... Logic Enable referenced to -Vin, No suffix........................................... Open/High=ON, Low=OFF “R” suffix .......................................... Open/High=OFF, Low=ON Switching Frequency ...................................................400KHz typ. Input Reflected Ripple current..................................... 225mA typ. Input Surge Voltage .................................. 50VDC max for 100ms Isolation Voltage Input to Output ..........................................................1500VDC Input to Case ..............................................................500VDC Output to Case............................................................500VDC Isolation Resistance....................................................... 10MΩ min. OUTPUT 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% ENVIRONMENTAL SPECIFICATIONS 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 Load Regulation (20% to 100% load).................................. ±0.2% PHYSICAL SPECIFICATIONS Ripple/Noise (20 MHz BW) ................................................... 1.5% Weight ..................................................................................... 4 oz Remote Sense Compensation ............................................... 10% Dimensions ............................................... 2.28 x 2.4 x 0.50 inches Transient Response (50% load step) ..................................250ms Case Material................................................. thick, aluminum alloy Due to advances in technology, specifications subject to change without notice 03/28/2012 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 1 of 3 LV Series 50-200 Watts Single Outputs Half-Brick DC/DC Converters Rev. G MODEL SELECTION TABLE Model Number for Threaded Inserts LV12S3.3-75 Model Number for Thru-Hole Inserts LV12S3.3-75TH Input Voltage Range Output Voltage Output Current Output Power 3.3 VDC 21.4 A 75 W LV12S5-100 LV12S5-100TH 5 VDC 20.0 A 100 W LV12S8-100 LV12S8-100TH 8 VDC 12.5 A 100 W LV12S12-100 LV12S12-100TH 12 VDC 8.3 A 100 W LV12S12-120 LV12S12-120TH 12 VDC 10.0 A 120 W LV12S12-150 LV12S12-150TH 12 VDC 12.5 A 150 W LV12S15-50 LV12S15-50TH 15 VDC 3.3 A 50 W LV12S15-100 LV12S15-100TH 15 VDC 6.6 A 100 W LV12S15-125 LV12S15-125TH 15 VDC 8.3 A 125 W LV12S15-150 LV12S15-150TH 15 VDC 10.0 A 150 W LV12S18-150 LV12S18-150TH 18 VDC 8.33 A 150 W LV12S20-100 LV12S20-100TH 20 VDC 5.0 A 100 W LV12S24-50 LV12S24-50TH 24 VDC 2.1 A 50 W LV12S24-150 LV12S24-150TH 24 VDC 6.25 A 150 W LV12S26-150 LV12S26-150TH 26 VDC 5.76 A 150 W LV12S28-150 LV12S28-150TH 28 VDC 5.35 A 150 W LV12S28-200 LV12S28-200TH 28 VDC 7.14 A 200 W LV12S48-150 LV12S48-150TH 48 VDC 3.125 A 150 W 12 / 24 VDC (9 - 36) VDC NOTES 1. Pin to pin tolerance: ±0 .01" [± 0.3mm], pin diameter tolerance: ± 0.005" [± 0.13mm]. 2. Case material: 0.040" [1.02mm] thick, aluminum alloy 3003-0, per: QQA 250/2. 3. Unit comes with either 3M x 0.5 threaded thru inserts or for 0.125 thru-hole add "TH" suffix to model part number. 4. Consult Factory for optional heat sink. 5. Active high enable is standard; for active low enable add the suffix “R” to the part number (Ex: LV12S15-100R). DERATING CURVE LV12S26-150 AMBIENT VS OUTPUT CURRENT 03/28/2012 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 2 of 3 LV Series 50-200 Watts Single Outputs Half-Brick DC/DC Converters Rev. G MECHANICAL DRAWING Unit: inches [mm] LABEL DATE CODE WALL INDUSTRIES R XXXX SEE NOTE-4 SERIAL NO: DC/DC CONVERTER MODEL NAME EXETER, NH 03833 XXXX +0.5 2.28+.02 -.03 57.9 -0.8 .50 [12.7] TO STANDOFFS ONLY 2.000 [50.80] +0.5 2.40+.02 -.03 61.0 -0.8 KEY PIN/ NO CONNECTION 6 1 1.400 [35.56] 7 2 1.000 [25.40] 8 3 .700 [17.78] 9 4 .400 [10.16] 10 5 .000 [0.00] .30 [7.6] .50 [12.7] .19+.02 -.03 1.900 [48.26] 4.8+0.5 -0.6 .000 [0.00] LEXAN INSULATOR 2X PIN DESIGNATION 1 -OUTPUT 2 -SENSE 3 TRIM 4 +SENSE 5 +OUT 6 -Vin 7 CASE GRD 8 KEY PIN/NC 9 ON/OFF 10 +Vin 03/28/2012 PIN Ø Ø.081 Ø.040 Ø.040 Ø.040 Ø.081 Ø.081 Ø.040 Ø.081 Ø.040 Ø.081 .20 MIN [5.1 MIN] SEE NOTE-3 PIN LENGTH FROM STANDOFFS ONLY NOTES: 1. PIN TO PIN TOLERANCE ± .01 [±0.3], PIN DIAMETER TOLERANCE: ±.005 [±0.13]. 2. CASE MATERIAL: .040 [1.02] THICK, ALUMINUM ALLOY 3003-0, PER: QQA 250/2. 3. UNLESS OTHERWISE SPECIFIED. TO ORDER: 4. UNIT COMES WITH EITHER 3M x 0.5 THREADED THRU INSERTS OR FOR Ø.125 THRU-HOLE ADD: “TH” SUFFIX TO MODEL PART NUMBER. EXAMPLE: LV12S15-100TH 5. CONSULT FACTORY FOR OPTIONAL HEATSINK. Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 3 of 3