SDC20-48S3P3

• 20 WATTS MAXIMUM OUTPUT POWER • 2:1 WIDE INPUT VOLTAGE RANGE • INTERNATIONAL SAFETY STANDARD APPROVAL • SIX-SIDED CONTINUOUS SHIELD • HIGH EFFICIENCY UP TO 88% • SMD TYPE 1.95” X 1.19” X 0.38” PACKAGE • FIXED SWITCHING FREQUENCY • PATENT CE MARK The SDC20 series offer 20 watts of output power from a 1.95 x 1.19 x 0.38 inch SMD type package. The SDC20 series with 2:1 wide input voltage of 36-75VDC and features 1600VDC of isolation, short-circuit and over-voltage protection, as well as six sided shielding. All models are particularly suited to telecommunications, industrial, mobile telecom and test equipment applications. T E C H N I C A L S P E C I F I C AT I O N OUTPUT SPECIFICATIONS Output power Voltage accuracy Voltage adjustability Minimum load Line regulation Load regulation Ripple and noise LL to HL at Full Load 10% to 100% FL 20MHz bandwidth (Measured with 0.1uF/50V MLCC) Full load and nominal Vin All specifications are typical at nominal input, full load and 25ºC otherwise noted GENERAL SPECIFICATIONS 20 Watts, max. ± 1% ± 10% 0% ± 0.2% ± 0.5% See table Efficiency Isolation voltage Isolation resistance Isolation capacitance Switching frequency Design meet standard Potting material Dimensions Weight MTBF (Note 3) See table 1600VDC, min. 10 ohms, min. 500pF, max. 300KHz, typ. IEC60950, UL1950, EN60950 Epoxy (UL94-V0) 1.95 X 1.19 X 0.38 Inch (49.5 X 30.2 X 9.7 mm) 32.5g (1.15oz) 1.632 x 10 hrs 6 9 Temperature coefficient ±0.02% / ºC, max. 300uS 3.9VDC 3.9VDC 6.2VDC 15VDC 18VDC 150%, max. Transient response recovery time 25% load step change Over voltage Zener diode clamp Over load protection Short circuit protection 2.0V output 3.3V output 5V output 12V output 15V output % of FL at nominal input ENVIRONMENTAL SPECIFICATIONS Operating ambient temperature Maximum case temperature Storage temperature range Thermal impedance Thermal shock Nature convection -40ºC ~ +85ºC (with derating) +100ºC -55ºC ~ +105ºC 14ºC/Watt MIL-STD-810F MIL-STD-810F 5% to 95% RH Hiccup, automatics recovery INPUT SPECIFICATIONS Input voltage range Input voltage lockout Input filter Input surge voltage 100mS max Input reflected ripple 48V input Nominal Vin and full load 48V nominal input DC-DC ON DC-DC OFF 36 – 75VDC 36VDC 33VDC L-C type 100VDC 25mAp-p Vibration Relative humidity EMC CHARACTERISTICS (Note 4) Conducted emissions Radiated emissions ESD Radiated immunity Fast transient Surge Conducted immunity EN55022 EN55022 EN61000-4-2 EN61000-4-3 EN61000-4-4 EN61000-4-5 EN61000-4-6 Class A Class A Perf. Criteria B Perf. Criteria A Perf. Criteria B Perf. Criteria B Perf. Criteria A Start up time Nominal Vin and Power up 25mS, typ. (Note 1) constant resistive load Remote ON/OFF 25mS, typ. Remote ON/OFF (Note 2) DC-DC ON Open or 3.5V < Vr < 12V DC-DC OFF Short or 0V < Vr < 1.2V Remote off input current Nominal Vin 2.5mA Page 1 of 3 Issued Date：2008/05/21 Model Number SDC20-48S2P0 SDC20-48S3P3 SDC20-48S05 SDC20-48S12 SDC20-48S15 Input Range 36 – 75 VDC 36 – 75 VDC 36 – 75 VDC 36 – 75 VDC 36 – 75 VDC Output Voltage 2.0 VDC 3.3 VDC 5.0 VDC 12.0 VDC 15.0 VDC Output Current 4000mA 4000mA 4000mA 1670mA 1330mA RIPPLE & NOISE (5) 50mV 50mV 75mV 75mV 75mV Input Current (6) 214mA 344mA 490mA 497mA 495mA Eff (7) (%) 82 84 89 88 88 Capacitor(8) Load max 17000uF 10300uF 6800uF 1200uF 750uF Note 1 2 3 4 5 6 7 8 Please add an external filter at converter input terminals when measuring input reflected ripple, as figure 1. L: Simulated source impedance of 12μH C: Nippon chemi-con KMF series, 220μF/100V. The ON/OFF control pin voltage is referenced to –Vin BELLCORE TR-NWT-000332. Case I: 50%. Stress, Temperature at 40ºC. (Ground fixed and controlled environment) An external filter capacitor is required for EMC testing. The capacitor should be capable of handing 1A ripple current for 48V models. Power mate suggest: Nippon chemi-con KMF series, 220μF/100V, ESR 90mΩ. Test condition: nominal input and full load. Maximum value at nominal input voltage and full load. Typical value at nominal input voltage and full load. Test by minimum Vin and constant resistive load. 1.95(49.5) 0.06(1.52) 0.01(0.25) 12 1.19(30.2) 7 TOP VIEW 0.382 (9.7) 0.068(1.75) 1.88(47.8) 0.07(1.8) 0.13(3.3) 0.11(2.8) 0.80(20.3) 1.20(30.5) 1 6 1. All dimensions in Inches (mm) Tolerance: X.XX±0.02 (X.X±0.5) 2. Pin pitch tolerance ±0.014(0.35) 0.787(20.0) DIA 0.05(1.27) X2 0.47 (12.1) 0.55(14.0) 0.12(3.2) 0.10(2.54) 0.32(8.2) 0.52(13.3) 1.32(33.6) 1.52(38.7) 1.72(43.8) 1 0.063(1.6) Dip Hole Required for guide 2 place. 1.60(40.6) 1.81(46.0) SDC20-48S05 Derating Curve OUTPUT POWER (%) DIP PIN CONNECTION PIN 1 2 3 4 5 6 DEFINE + OUTPUT - OUTPUT NC TRIM NC NC PIN 12 11 10 9 8 7 DEFINE + INPUT - INPUT NC SYNC ON-OFF CTRL NC 100 75 50 25 0 -40 -25 -10 Nature convection 0 50 60 70 80 1.45(36.8) 90 BOTTOM VIEW 1.39(35.3) 12 100 AMBIENT TEMPERATURE (ºC) Page 2 of 3 Issued Date：2008/05/21 Converter + Vin 2+ 4 - Vin 3 Sync Application of synchronization 1. The unit is capable of external synchronization from an independent time base with a switching rate between 330KHz and 360KHz 2. The amplitude of the synchronizing pulse train is TTL compatible 3. The duty cycle of the CLK should be 20% high and 80% low 4. Synchronization is referenced to negative input (-Vin) Converter 2+ 4 3 CLK CLK Signal 80% 2N7000 Sync - ON/OFF Control applicati Converter 2+ + Vin 1 - Vin ON/OFF Control CTR 3 - 20% Page 3 of 3 Issued Date：2008/05/21