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| VKA75xS ! Corporate: www.cdtechno.com Product: www.cdpoweronline.com 75 Watt Single Output Half Brick DC/DC Converter 18-36 V & 33 - 75V Input Range ! High Efficiency: 87% Typical at 5V ! 100S Transient Response 50100% Load Step ! 420 kHz Fixed-Frequency Operation ! Remote Sense ! Operation to +100C Baseplate Temperature Primary Remote On/Off, Choice of Pos/Neg Logic ! Adjustable Output Voltage ! Continuout Short-Circuit Protection ! Thermal Shutdown ! Case Ground Pin ! UL/CUL 60950, VDE EN60950 ! 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. The VKA75xS's proprietary control circuitry responds to 50-100% load steps in 100Seconds 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. PRODUCT SELECTION CHART MODEL VKA75LS02 VKA75LS03 VKA75LS05 VKA75LS12 VKA75LS15 VKA75LS24 VKA75MS02 VKA75MS03 VKA75MS05 VKA75MS12 VKA75MS15 VKA75MS24 INPUT VOLTAGE VOUT (VDC) 2.0V 3.3V 5.0V 12.0V 15.0V 24.0V 2.0V 3.3V 5.0V 12.0V 15.0V 24.0V IOUT (A) 15.0 15.0 15.0 6.3 5.0 3.1 15.0 15.0 15.0 6.3 5.0 3.1 EFFICIENCY MIN 75 80 85 87 88 89 76 81 86 88 89 89 TYP 76 81 86 88 89 90 77 82 87 89 90 90 24VDC (18-36) 48VDC (33-75) VKA75xS Rev D 1/2003 SPECIFICATIONS, ALL MODELS Specifications are at TCASE = +40C nominal input voltage unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS INPUT Voltage Range VKA75LS VKA75MS Maximum Input Current VKA75LS VIN = 16VDC VKA75MS VIN = 27VDC Reflected Ripple Current Peak - Peak Input Ripple Rejection DC to 1KHz No Load Input Current LS/MS 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 18 33 24 48 36 75 5.5 3.3 VDC VDC A A mA dB mA W W INPUT 50 20 60 50/100 3.6/4.8 0.18/0.4 0.520 0.360 8 12 mC mC mA 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 CONDITIONS MIN 0 TYP MAX 75 UNITS W % % % %/C VOUT, Nom lOUT, Nom lOUT, Nom V VOUT, Nom Sec OUTPUT High Line to Low Line No Load to Rated Load DC to 20MHz BW test 1 0.02 0.02 .02 1% 0.05 0.05 125% 50 to 100% Load Step di/dt = 1.0A/Sec VOUT, 1% of Nominal Output 2% 100 130% 110% 135% PARAMETER 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 NOTES: (1) (2) (3) (4) (5) CONDITIONS Peak Test for 2 Seconds MIN 1500 1500 500 10 TYP MAX UNITS VDC VDC VDC M pF A, rms VISO = 240VAC, 60Hz 2000 180 GENERAL 400 12V & higher(4) Open Collector/Drain 420 -50% / +25% 440 0.5 KHz V VOUT, Nom Within 1% of Rated Output 10.0 1.0 0.4 Open Collector 12.5 85 (3.0) +100 +125 +115 +300 mA V mSec g (oz.) C C C C/W C Case Temperature Case Temperature Case Temperature 10 Seconds max -40 -55 +100 +25 +25 7.1 See Typical Performance Curves, page 3 Continuous Mode See graphs for Efficiency vs. Output Load, VIN, TCASE 3.3V Models Limited in Trim Down Range Consult Factory for Details VKA75xS Rev D 1/2003 Product: www.cdpoweronline.com 2 TCASE = +40C nominal input voltage unless otherwise specified. TYPICAL PERFORMANCE CURVES VKA75 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) VKA75xS Rev D xSzz - Product: www.cdpoweronline.com ORDERING INFORMATION 1/2003 3 MECHANICAL NOTES: All dimensions are in inches (millimeters). 0.530 MAX [13.46] 0.20 [5.1] PIN PLACEMENT TOLERANCE: 0.005" MECHANICAL TOLERANCE: 0.015" Marked with: specific modeL ordered, date code, job code. .040 [1.02] DIA. 7 PLACES .081 [2.06] DIA. 2 PLACES 0.20 [5.1] 0.50 [12.7] 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. 0.40 [10.16] .400 [10.16] 2.000 [50.80] 1.000 [25.40] 2.40 [61.0] MAX VKA75xS 0.700 [17.78] 1.000 [25.40] 1.400 [35.56] 1.400 [35.56] 0.19 [4.8] 1.900 [48.26] MOUNTING INSERTS M3 X 0.5 THRU, 4 PLACES MAX. TORQUE, 8 IN/LBS 2.28 [57.91] MAX OUTPUT ADJUST VOLTAGE 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, or 24V). Radj - up = OVP NOTE 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. ( Vo(100 + %) 1.225% _ (100 + 2%) % ) k Radj - down = (100 - 2) % k Power Electronics Division, Americas 3400 E Britannia Drive, Tucson, Arizona 85706 Tel: 800.547.2537 Fax: 520.295.4197 C&D Technologies, EMEA/Asia/Pacific Milton Keynes MK14 5BU UK Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545 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. Product: www.cdpoweronline.com VKA75xS Rev D 1/2003 4 |
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