OBSOLETE PRODUCT VKA75xSC Series 75 Watt W att Single Singgle Output O Half Brick DC/DC Converter Contact Factory for Replacement Model PRODUCT OVERVIEW The VKA75xSC Series DC/DC converters present an economical and practical solution for distributed power system architectures which require high power density and efficiency while maintaining system modularity and upgradeability. With the ability to operate over a wide input voltage range of 18 to 36 and 33 to 75 volts, these modules are ideal for use in battery backup applications common in todays’ telecommunication and electronic data processing applications. The output is fully isolated from the input, allowing for a variety of polarity and grounding configurations. The VKA75xSC’s proprietary control circuitry responds to 50-100% load steps in 100mSeconds to within 1% nominal Vout. The patented fixed frequency architecture combined with surface mount technology results in a compact, efficient and reliable solution to DC/DC conversion requirements. FEATURES RoHS Compliant Primary Remote On/Off, Choice of Pos/Neg Logic 18-36 V & 33 - 75V Input Range Adjustable Output Voltage High Efficiency: 87% Typical at 5V Continuout Short-Circuit Protection 100mS Transient Response 50-100% Load Step Thermal Shutdown 420 kHz Fixed-Frequency Operation Case Ground Pin Remote Sense UL/CUL 60950, VDE EN60950 Operation to +100°C Baseplate Temperature PRODUCT SELECTION CHART MODEL VKA75LS02C VKA75LS03C INPUT VOLTAGE 18-36Vdc 18-36Vdc VOUT (VDC) 2.0V 3.3V IOUT (A) 15.0 15.0 EFFICIENCY MIN 75 80 VKA75LS05C VKA75LS12C VKA75LS15C VKA75LS24C VKA75MS02C 18-36Vdc 18-36Vdc 18-36Vdc 18-36Vdc 33-75Vdc 5.0V 12.0V 15.0V 24.0V 2.0V 15.0 6.3 5.0 3.1 15.0 85 87 88 89 76 86 88 89 90 77 VKA75MS03C VKA75MS05C VKA75MS12C VKA75MS15C 33-75Vdc 33-75Vdc 33-75Vdc 33-75Vdc 3.3V 5.0V 12.0V 15.0V 15.0 15.0 6.3 5.0 81 86 88 89 82 87 89 90 VKA75MS24C 33-75Vdc 24.0V 3.1 89 90 TYP 76 81 THROUGH-HOLE SOLDERING INFORMATION These devices are intended for wave soldering or manual soldering. They are not intended to be subject to surface mount processes under any circumstances. The normal wave soldering process can be used with these devices where the device is subjected to a maximum wave temperature of 260°C for a period of no more than 10 seconds. Within this time and temperature range, the integrity of the device’s plastic body will not be compromised and internal temperatures within the converter will not exceed 175°C. Care should be taken to control manual soldering limits identical to that of wave soldering. For full details go to www.murata-ps.com/rohs www.murata-ps.com Technical enquiries - email: [email protected], tel: +44 (0)1908 615232 MCD_VKA75C Series.D01 Page 1 of 4 VKA75xSC Series 75 Watt Single Output Half Brick DC/DC Converter SPECIFICATIONS, ALL MODELS Specifications are at TCASE = +40°C nominal input voltage unless otherwise specified. INPUT PARAMETER INPUT Voltage Range VKA75LS VKA75MS Maximum Input Current VKA75LS VKA75MS Reflected Ripple Current Input Ripple Rejection No Load Input Current LS/MS OUTPUT VIN = 16VDC VIN = 27VDC Peak - Peak DC to 1KHz MIN TYP MAX UNITS 18 33 24 48 36 75 VDC VDC 5.5 3.3 50 Power Dissipation LS/MS No Load Standby, Primary On/Off Disabled LS/MS Inrush Charge VIN = VINmax. VKA75LS VKA75MS Quiescent Operating Current Primary On/Off Disabled PARAMETER OUTPUT Rated Power Set point Accuracy Line Regulation Load Regulation Output Temperature Drift Output Ripple, p-p Output Current Limit Inception Output Short-Circuit Current (2) Output Overvoltage Limit Transient Response Peak Deviation Settling Time PARAMETER GENERAL CONDITIONS ISOLATION Input to Output Input to Baseplate Output to Baseplate Resistance Capacitance Leakage Current GENERAL Efficiency, Line, Load, Temp. (3) Switching Frequency Remote Sense Compensation Output Voltage Adjust Range Remote On/Off Control Inputs Primary Sink Current-Logic Low Vlow Vhigh Turn-on Time Weight TEMPERATURE Operation/Specification Storage Shutdown Temperature Thermal Impedance, case-ambient Lead Solder Temperature CONDITIONS 20 60 50/100 3.6/4.8 0.18/0.4 8 MIN TYP 0 DC to 20MHz BW test 50 to 100% Load Step di/dt = 1.0A/μSec VOUT, 1% of Nominal Output Peak Test for 2 Seconds W W 0.520 0.360 mC mC 12 mA MAX UNITS 75 1 0.02 0.2 ±.02 1% 130% 120% 125% High Line to Low Line No Load to Rated Load CONDITIONS A A mA dB mA W % % % %/°C VOUT, Nom lOUT, Nom lOUT, Nom V 0.05 0.5 150% 150% 135% 2% 100 MIN TYP VOUT, Nom μSec MAX UNITS 1500 1500 500 10 VDC VDC VDC MΩ pF μA, rms 2000 180 VISO = 240VAC, 60Hz 400 12V & higher(4) 420 440 0.5 KHz V VOUT, Nom 1.0 0.4 Open Collector 12.5 85 (3.0) mA V -50% / +25% Open Collector/Drain Within 1% of Rated Output Case Temperature Case Temperature Case Temperature 10.0 -40 -55 +100 +25 +25 +100 +125 +115 7.1 10 Seconds max +300 mSec g (oz.) °C °C °C °C/W °C NOTES: (1) See Typical Performance Curves, page 3 (2) Continuous Mode (3) See graphs for Efficiency vs. Output Load, VIN, TCASE (4) 3.3V Models Limited in Trim Down Range (5) Consult Factory for Details www.murata-ps.com Technical enquiries - email: [email protected], tel: +44 (0)1908 615232 MCD_VKA75C Series.D01 Page 2 of 4 VKA75xSC Series Power Dissipation (W) • TYPICAL PERFORMANCE CURVES TCASE = +40°C nominal input voltage unless otherwise specified. 75 Watt Single Output Half Brick DC/DC Converter Ambient Air Temperature (°C) ORDERING INFORMATION VKA75 xSzz Device Family Indicates 75 Watt Regulated Unit Model Number Selected from Table of Electrical Characteristics Where: x = Input Voltage (L = 24VDC; M = 48VDC) zz = Output Voltage (03=3.3V, 05=5V, etc.) Lead Length 0.200” - No Number 0.145” - (6) 0.110” - (8) Remote On-Off Logic: Positive - No Number Negative - (1) RoHS Compliant www.murata-ps.com C Not all model configurations are available. The following are the defined and active models: VKA75LS05-1C VKA75LS05C VKA75LS12-1C VKA75LS12C VKA75LS15C VKA75LS24C VKA75MS03C VKA75MS05C VKA75MS12C VKA75MS24C Technical enquiries - email: [email protected], tel: +44 (0)1908 615232 MCD_VKA75C Series.D01 Page 3 of 4 VKA75xSC Series 75 Watt Single Output Half Brick DC/DC Converter MECHANICAL NOTES: All dimensions are in inches (millimeters). PIN PLACEMENT TOLERANCE: ± 0.005” 0.530 MAX [13.46] MECHANICAL TOLERANCE: ± 0.015” Marked with: specific modeL ordered, date code, job code. 0.20 [5.1] .040 [1.02] DIA. 7 PLACES .081 [2.06] DIA. 2 PLACES 0.20 [5.1] 0.50 [12.7] .400 [10.16] 0.40 [10.16] 2.000 [50.80] 0.700 [17.78] VKA75xSC 1.000 [25.40] 2.40 [61.0] MAX MATERIAL: Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance and electrical properties in high humidity environments and over a wide operating temperature range. The encapsulant and outer shell of the unit have UL94V-0 ratings. Lead material is brass; lead finish is matte tin (100-300 micro-inches) over a nickel barrier layer (5-40 micro-inches).” 1.000 [25.40] 1.400 [35.56] 1.400 [35.56] MOUNTING INSERTS M3 X 0.5 THRU, 4 PLACES MAX. TORQUE, 8 IN/LBS 1.900 [48.26] 0.19 [4.8] 2.28 [57.91] MAX OUTPUT ADJUST VOLTAGE OVP NOTE This feature allows the user to accurately adjust the module’s output voltage set point to a specified level. This is achieved by connecting a resistor or potentiometer from the TRIM terminal to either the +Vout terminal (for increased Vout) or the -Vout terminal (for decreased Vout). The formulae below describe the trim resistor value to obtain a Vout change of Δ%. VO is output voltage prior to adjustment (3.3V, 5V, 12V, 15V, or 24V). Radj - up = ( Radj - down = Vo(100 + Δ%) 1.225Δ% (100Δ-%2) _ (100 + 2Δ%) Δ% Special attention should be given to the peak voltage deviation during a dynamic load step when trimming the output above the original set point to avoid tripping the overvoltage protection circuit. Should an OVP condition occur, the converter will go into a latch condition and must be externally reset before it will return to normal operation. )Ω Ω USA: Tucson (Az), Tel: (800) 547 2537, email: [email protected] Canada: Toronto, Tel: (866) 740 1232, email: [email protected] Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 UK: Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected] France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected] Germany: München, Tel: +49 (0)89-544334-0, email: [email protected] www.murata-ps.com email: [email protected] ISO 9001 REGISTERED Japan: Tokyo, Tel: 3-3779-1031, email: [email protected] Osaka, Tel: 6-6354-2025, email: [email protected] Website: www.murata-ps.jp China: Shanghai, Tel: +86 215 027 3678, email: [email protected] Guangzhou, Tel: +86 208 221 8066, email: [email protected] 03/04/08 Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2008 Murata Power Solutions, Inc. www.murata-ps.com Technical enquiries - email: [email protected], tel: +44 (0)1908 615232 MCD_VKA75C Series.D01 Page 4 of 4