vka100xs rev c 3/2001 page 1 100 w att s ingle o utput h igh d ensity dc/dc c onverter vka100xs series features 18 - 36v & 33 - 75v input range small size: 2.28" x 2.4" x 0.50" high efficiency: 87% typical at 5v 100 s transient response 50-100% load step 420kh z fixed-frequency operation operation to +100c baseplate temp. primary remote on/off, choice of pos/neg logic adjustable output voltage remote sense continuous short-circuit protection thermal shutdown safety per ul1950, en 60950 and csa 22.2 #234 case ground pin description the vka100xs 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 vka100xs's proprietary control circuitry responds to 50-100% load steps in 100 seconds 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 data sheet agency approvals efficiency(%) input v out i out note (1) model voltage (v dc ) (a) min typ efficiency(%) input v out i out note (1) model voltage (v dc ) (a) min typ vka100ls02 2.0v 20.0 75 76 vka100ls02f 2.0v 30.0 73 74 vka100ls2v5f 2.5v 30.0 75 76 vka100ls03 3.3v 20.0 80 81 vka100ls03f 3.3v 30.0 80 81 vka100ls05 24v dc 5.0v 20.0 85 86 vka100ls12 12.0v 8.3 87 88 vka100ls15 (18-36) 15.0v 6.7 88 89 vka100ls24 24.0v 4.2 89 90 vka100ms02 2.0v 20.0 76 77 vka100ms02f 2.0v 30.0 74 75 vka100ms2v5f 2.5v 30.0 77 78 vka100ms03 3.3v 20.0 81 82 vka100ms03f 3.3v 30.0 81 82 vka100ms05 48v dc 5.0v 20.0 86 87 vka100ms12 12.0v 8.3 88 89 vka100ms15 (33-75) 15.0v 6.7 89 90 vka100ms24 24.0v 4.2 89 90
vka100xs rev c 3/2001 page 2 common specifications specifications typical at t case = +40c, nominal input voltage, rated output current unless otherwise specified. weight 85 (3.0) g (oz.) temperature operation/specification case temperature -40 +25 +100 c storage case temperature -55 +25 +125 c shutdown temperature case temperature +100 +115 c thermal impedance, case-ambient 7.1 c/w lead solder temperature 10 seconds max +300 c ( ) see notes on page 3. parameter conditions min typ max units input voltage range vka100ls 18 24 36 vdc vka100ms 33 48 75 vdc maximum input current vka100ls v in = 16vdc 7.4 a vka100ms v in = 27vdc 4.4 a reflected ripple current peak - peak 20 ma input ripple rejection dc to 1khz 50 60 db no load input current ls/ms 50/100 ma power dissipation ls/ms no load 3.6/4.8 w standby, primary on/off disabled ls/ms 0.18/0.4 w inrush charge v in = v in max. vka100ls 0.520 mc vka100ms 0.360 mc quiescent operating current primary on/off disabled 812ma output rated power 0 100 w set point accuracy 1% line regulation high line to low line 0.02 0.05 % load regulation no load to rated load 0.02 0.05 % output temperature drift .02 %/c output ripple, p-p dc to 20mhz bw 1% v out , nom output current limit inception 130% l out , nom output short-circuit current (2) test 110% l out , nom output overvoltage limit 125% 135% v transient response 50 to 100% load step peak deviation di/dt = 0.1a/ sec 2% v out , nom settling time v out , 1% of nominal output 100 sec isolation input to output peak test for 2 seconds 1500 vdc input to baseplate 1500 vdc output to baseplate 500 vdc resistance 10 m ? capacitance 2000 pf leakage current v iso = 240vac, 60hz 180 a, rms general efficiency, line, load, temp. (3) switching frequency 400 420 440 khz remote sense compensation 0.5 v output voltage adjust range -12 v & higher(4) -50% / +25% v out , nom remote on/off control inputs primary open collector/drain sink current-logic low 1.0 ma vlow 0.4 v vhigh0 open collector turn-on time within 1% of rated output 10.0 12.5 msec
vka100xs rev c 3/2001 page 3 3.3v 5v 28v 0 20 40 60 80 100 70 75 80 85 90 95 efficiency vs output load efficiency (%) output load (% of rated) 15v output ripple vs input voltage normalized output ripple vin (vdc) 1.50 1.25 1.00 0.75 0.50 12v dissipated power, p d (w) ambient temperature (c) power derating with no heatsink natural convection 0 10 25 50 75 100 400 lfm airflow 200 lfm airflow 12 2 4 6 8 vin, min vin, typ vin, max 0 20 40 60 80 100 70 75 80 85 90 95 efficiency vs output load efficiency (%) output load (% of rated) change in efficiency (%) -10 -5 typ +5 +10 50% load 10% load efficiency vs input voltage vin (vdc) vin, min vin, typ vin, max efficiency vs temperature change in efficiency (%) 20% load 100% load -55 +25 +105 tcase (c) -15 +65 +5 -5 -10 typ +10 100% load 24v reflected ripple current vs tempera ture -55 +25 +105 tcase (c) +100 typ -100 change in reflected ripple current (%) -15 +65 -50 +50 output ripple vs temperature -55 +25 +105 tcase (c) 3.0 1.0 0.33 normalized output ripple -15 +65 0.5 2.0 14 16 24v 28v 15v notes: (1) see typical performance curves, page 3 (2) continuous mode (3) see graphs for efficiency vs. output load, v in , t case (4) 3.3v models limited in trim down range (5) consult factory for details typical performance curves t a = +40c, nominal input voltage, rated load, recommended external components applied, unless otherwise specified. vka100 xszz- device family indicates 100 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) ordering information 25 50 75 100 0 0 2 4 6 8 10 12 14 16 18 20 22 400 lfm 200 lfm natural convection power derating with no heatsink dissipated power, po (w) ambient temperature ( c)
vka100xs rev c 3/2001 page 4 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. notes: all dimensions are in inches (millimeters). pin placement tolerance: 0.005" mechanical tolerance: 0.015" marked with: specific model ordered, date code, job code. 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. mechanical 1.000 [25.40] 1.400 [35.56] 2.000 [50.80] 0.19 [4.8] 0.20 [5.1] 0.50 [12.7] 0.40 [10.16] 0.530 max [13.46] 0.20 [5.1] .040 [1.02] dia. 7 places .081 [2.06] dia. 2 places 1.400 [35.56] 1.000 [25.40] 0.700 [17.78] .400 [10.16] 1.900 [48.26] 2.28 [57.91] max mounting inserts m3 x 0.5 thru, 4 places max. torque, 8 in/lbs 2.40 [61.0] max output voltage adjust 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 ? %. v o is output voltage prior to adjustment (3.3v, 5v, 12v, 15v, 24v or 28v). radj - up = ( vo(100 + ? %) _ (100 + 2 ? %) ) k ? 1.225 ? % ? % radj - down = ( 100 - 2 ) k ? ? % any data, prices, descriptions or specifications presented herein are subject to revision by c&d technologies, inc. without not ice. 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 c ompleteness 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 resp onsible 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 supp ort or aviation or aerospace applications. power electronics division, united states 3400 e britannia drive, tucson, arizona 85706 phone: 800.547.2537 fax: 520.770.9369 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 c&d technologies, (ncl) tanners drive blakelands north milton keynes mk14 5bu uk tel: +44 (0)1908 615232 fax: +44 (0)1908 617545
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