Product Data Sheet 75 WATT SINGLE OUTPUT HIGH DENSITY DC/DC CONVERTER VKA75xS Series. FEATURES DESCRIPTION ! 18 - 36V & 33 - 75V INPUT RANGE The VKA75xS 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. ! SMALL SIZE: 2.28" X 2.4" X 0.50" ! HIGH EFFICIENCY: 87% TYPICAL AT 5V ! 100µ µS TRANSIENT RESPONSE 50-100% LOAD STEP ! 420kHZ FIXED-FREQUENCY OPERATION ! OPERATION TO +100°C BASEPLATE TEMP. ! PRIMARY REMOTE ON/OFF, CHOICE OF POS/NEG LOGIC ! ADJUSTABLE OUTPUT VOLTAGE ! REMOTE SENSE The VKA75xS's proprietary control circuitry responds to 50-100% load steps in 100µSeconds to within 1% nominal Vout. ! CONTINUOUS SHORT-CIRCUIT PROTECTION ! THERMAL SHUTDOWN ! SAFETY PER UL1950, EN 60950 AND CSA 22.2 #234 ! CASE GROUND PIN The patented fixed frequency architecture combined with surface mount technology results in a compact, efficient and reliable solution to DC/DC conversion requirements. Efficiency(%) Input Model VOUT Voltage (VDC) IOUT Efficiency(%) Input Note (1) (A) Min Typ Model VOUT Voltage (VDC) IOUT Note (A) Min (1) Typ VKA75LS02 2.0V 15.0 75 76 VKA75MS02 2.0V 15.0 76 77 VKA75LS03 3.3V 15.0 80 81 VKA75MS03 3.3V 15.0 81 82 5.0V 15.0 85 86 VKA75MS05 5.0V 15.0 86 87 12.0V 6.3 87 88 VKA75MS12 12.0V 6.3 88 89 15.0V 5.0 88 89 VKA75MS15 15.0V 5.0 89 90 24.0V 3.1 89 90 VKA75MS24 24.0V 3.1 89 90 VKA75LS05 24VDC VKA75LS12 VKA75LS15 VKA75LS24 (18-36) 48VDC (33-75) AGENCY APPROVALS VKA75xS Rev C 3/2001 Page 1 COMMON SPECIFICATIONS Specifications typical at TCASE = +40°C, nominal input voltage, rated output current unless otherwise specified. PARAMETER INPUT Voltage Range VKA75LS VKA75MS Maximum Input Current VKA75LS VKA75MS Reflected Ripple Current Input Ripple Rejection No Load Input Current LS/MS Power Dissipation LS/MS No Load Standby, Primary On/Off Disabled LS/MS Inrush Charge VKA75LS VKA75MS Quiescent Operating Current Primary On/Off Disabled 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 ISOLATION Input to Output Input to Baseplate Output to Baseplate Resistance Capacitance Leakage Current CONDITIONS MIN 18 33 VIN = 16VDC VIN = 27VDC Peak - Peak DC to 1KHz 50 TYP MAX UNITS 36 75 VDC VDC 5.5 3.3 20 60 50/100 A A mA dB mA 3.6/4.8 0.18/0.4 W W 24 48 VIN = VINmax. 8 0 1 0.02 0.02 ±.02 1% High Line to Low Line No Load to Rated Load DC to 20MHz BW test 125% 50 to 100% Load Step di/dt = 1.0A/µSec VOUT, 1% of Nominal Output Peak Test for 2 Seconds mC mC 12 mA 75 W % % % %/°C VOUT, Nom lOUT, Nom lOUT, Nom V 0.05 0.05 130% 110% 135% 2% 100 VOUT, Nom µSec 1500 1500 500 10 VDC VDC VDC MΩ pF µA, rms 2000 180 VISO = 240VAC, 60Hz GENERAL Efficiency, Line, Load, Temp. (3) Switching Frequency Remote Sense Compensation Output Voltage Adjust Range-12V & higher(4) Remote On/Off Control Inputs Primary Open Collector/Drain Sink Current-Logic Low Vlow Vhigh Turn-on Time Within 1% of Rated Output 0.520 0.360 400 420 440 0.5 KHz V VOUT, Nom -50% / +25% 10.0 Weight 1.0 0.4 Open Collector 12.5 85 (3.0) mA V mSec g (oz.) TEMPERATURE Operation/Specification Case Temperature -40 +25 +100 °C Storage Shutdown Temperature Case Temperature Case Temperature -55 +100 +25 +125 +115 °C °C +300 °C/W °C Thermal Impedance, case-ambient Lead Solder Temperature 7.1 10 Seconds max ( ) See NOTES on page 3. Page 2 VKA75xs Rev C 3/2001 ORDERING INFORMATION NOTES: (1) See Typical Performance Curves, page 3 (2) Continuous Mode VKA75 xSzz Device Family Indicates 75 Watt Regulated Unit (3) See graphs for Efficiency vs. Output Load, VIN, TCASE (4) 3.3V Models Limited in Trim Down Range 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) (5) Consult Factory for Details TYPICAL PERFORMANCE CURVES TA = +40°C, nominal input voltage, rated load, recommended external components applied, unless otherwise specified. EFFICIENCY vs OUTPUT LOAD EFFICIENCY vs OUTPUT LOAD 95 95 90 90 12V EFFICIENCY vs TEMPERATURE 28V 24V 15V +10 Change in Efficiency (%) 3.3V 80 Efficiency (%) Efficiency (%) 5V 85 85 15V 80 28V 75 75 +5 TYP 100% Load 20% Load -5 24V 70 20 40 60 80 Output Load (% of Rated) 0 70 100 EFFICIENCY vs INPUT VOLTAGE -10 -55 100 50% Load -5 Normalized Output Ripple 100% Load Normalized Output Ripple TYP 1.25 1.00 0.75 10% Load -10 Vin, min Vin, typ Vin, max +25 Tcase (°C) +65 +105 3.0 1.50 +5 -15 OUTPUT RIPPLE vs TEMPERATURE OUTPUT RIPPLE vs INPUT VOLTAGE +10 Change in Efficiency (%) 20 40 60 80 Output Load (% of Rated) 0 2.0 1.0 0.5 0.33 0.50 Vin, min Vin, typ Vin, max -15 -55 +25 +65 +105 Tcase (°C) +100 Vin (VDC) REFLECTED RIPPLE CURRENT vs TEMPERA TURE POWER DERATING WITH NO HEATSINK 16 14 +50 TYP Dissipated Power, Po (W) 12 10 -50 -100 -55 -15 +25 Tcase (°C) +65 +105 Dissipated Power, PD (W) Change in Reflected Ripple Current (%) Vin (VDC) 8 6 4 2 0 POWER DERATING WITH NO HEATSINK 22 20 18 16 14 12 400 LFM 200 LFM Airflow 400 LFM Airflow 200 LFM Natural Convection 10 8 Natural Convection 6 4 2 0 0 25 50 75 75 50 Temperature Ambient (°C) Ambient Temperature (°C) 25 VKA75xS Rev C 3/2001 100 100 Page 3 MECHANICAL NOTES: All dimensions are in inches (millimeters). PIN PLACEMENT TOLERANCE: ± 0.005" MECHANICAL TOLERANCE: ± 0.015" 0.530 MAX [13.46] Marked with: specific modeL ordered, date code, job code. 0.20 [5.1] .040 [1.02] DIA. 7 PLACES 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 solder plated to allow ease of solderability. .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] 2.40 [61.0] MAX 0.700 [17.78] 1.000 [25.40] 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 VOLTAGE ADJUST 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 ∆ %. VO is output voltage prior to adjustment (3.3V, 5V, 12V, 15V, 24V or 28V). 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. Radj - up = ( Radj - down = Vo(100 + ∆%) 1.225∆% (100 - 2) ∆% _ (100 + 2 ∆%) ∆% ) kΩ kΩ Power Electronics Division, United States 3400 E Britannia Drive, Tucson, Arizona 85706 Phone: 800.547.2537 Fax: 520.770.9369 C&D Technologies, (NCL) Tanners Drive Blakelands North Milton Keynes MK14 5BU UK Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545 Power Electronics Division, Europe C&D Technologies (Power Electronics) Ltd. 132 Shannon Industrial Estate, Shannon, Co. Clare, Ireland Tel: +353.61.474.133 Fax:+353.61.474.141 Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to be accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user’s intended purpose and in user’s specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace applications. Page 4 VKA75xs Rev C 3/2001