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| DC SERIES UP TO 20 WATTS - DC SERIES SURFACE MOUNT CONVERTER FEATURES: * * * * * * * * Output trim function Overvoltage protection High efficiency (to 88%) Six sided shield Undervoltage lockout Remote On/Off Short-circuit protection UL/CUL 1950, file #E155800 TO 20 WATTS THE DC SERIES FROM WALL INDUSTRIES The DC surface mount series offers the user a wide input range and single output with tight regulation. These converters are highly reliable and well suited for telecom applications. SPECIFICATIONS: DC SERIES All specifications apply at 25 C ambient unless otherwise noted. INPUT SPECIFICATIONS Input Voltage Range ........48V Nominal input ..........36-75VDC Input Voltage Lockout ......DC-DC On............................36VDC DC-DC Off............................33VDC Input Filter (Note 1)......................................................L-C type Input Voltage Variation .....dv/dt ..............................5V/ms, max (complies with ETS300 132 part 4.4) Input Surge Voltage .........48V Input (100mS max) .....100VDC Input Reflected Ripple (Note 2) ..................................25mAp-p (nominal Vin at full load) Start Up Time ...................nom. Vin & const. res. load ....25mS Remote On/Off (Note 3)...DC-DC On....Open or 3.5V Efficiency (nominal input and full load).......................see table Isolation voltage .................................................1600VDC, min Isolation resistance .............................................109ohms, min Isolation capacitance ..............................................500pF, max Switching frequency...............................................300KHz, typ Approvals & standards.................IEC60950,UL1950,EN60950 Potting material..............................................Epoxy (UL94-V0) Dimensions...........................................1.95 x 1.19 x 0.38 Inch Weight ...............................................................32.5g (1.15 oz) MTFB (Note 5) .................................................1.632 x 106 hrs ENVIRONMENTAL SPECIFICATIONS Operating temp. range...................-40C ~ +85C(w/ derating) Maximum case temp. ....................................................+100C Storage temp. range ........................................-55C ~ +105C Thermal impedence .........(natural convection) .........14C/Watt Thermal shock...................................................MIL-STD-810D Vibration ................10~55Hz, 2G, 30 minutes along X,Y and Z Relative humidity ...............................................5% to 95% RH OUTPUT SPECIFICATIONS Output Power .....................................................20 Watts, max Voltage accuracy..............full load and nominal Vin ..........1% Voltage adjustability..........................................................10% Minimum load.......................................................................0% Line regulation..................LL to HL at Full Load .............0.2% Load regulation ................10% to 100% FL....................0.5% Ripple and noise (Note 4) .................2, 3.3V: 50mV, 75mVp-p Temperature Coefficient .................................0.02%/ C, max Transient resp rec time ....(25% load step change) ........300uS Over voltage protection ....2.0 & 3.3V output .....................3.9V ..(Zener diode clamp) 5V output ..................................6.2V 12V output .................................15V 15V output .................................18V EMC CHARACTERISTICS Conducted emissions.......EN55022 ..............................Level A Radiated emissions..........EN55022 ..............................Level A ESD..................................EN61000-4-2 .............Perf. Criteria2 Radiated immunity ...........EN61000-4-3 .............Perf. Criteria2 Fast transient ...................EN61000-4-4 .............Perf. Criteria2 Surge................................EN61000-4-5 .............Perf. Criteria2 Conducted immunity ........EN61000-4-6 .............Perf. Criteria2 Over load protection ....% of FL at nom out ...150% max Short circuit protection .........Hiccup, automatic recovery Due to advances in technology, specifications subject to change without notice. 3/18/04 1 603 778 2300 WWW.WALLINDUSTRIES.COM TO 20 WATTS DC SERIES Input Output Voltage Voltage (VDC) (VDC) 36-75 2.0 3.3 5 12 15 Output Current (A) 4 4 4 1.67 1.33 Model Efficiency Number (%) DC48S2.0-8 DC48S3.3-13 DC48S5-20 DC48S12-20 DC48S15-20 82 84 88 88 87 PIN CONNECTIONS 1 2 3 4 5 6 7 8 9 10 11 12 +Vout -Vout N/C (Note 7) Trim N/C (Note 7) N/C (Note 7) N/C (Note 7) Remote On/Off Sync N/C (Note 7) -Vin +Vin NOTES: 1. An external filter capacitor is required for normal operation. The capacitor should be capable of handling 1A ripple current. We suggest: Nippon chemicon KMF series, 220F/100V, ESR 90Mohm 2. Simulated source impedance of 12H. 12H inductor in series with +Vin. 3. Remote On/Off is referenced to the negative input (-Vin). 4. Measured with 104pF/50V MLCC. Test conditions: nominal input and full load. 5. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40C. (Ground fixed and controlled environment). 6. We recommend solder paste volume of 2.8 cubic mm (170,000 cubic mills/pin). 7. N/C pins may be used internally by the module and should not be connected by the customer. 3/18/04 WWW.WALLINDUSTRIES.COM 603 778 2300 2 DC SERIES TO 20 WATTS OUTLINE DIAGRAM Dimensions are in inches and (millimeters). Tolerances: x.x 0.02 in. (0.5 mm) - x.xx 0.015 in. (0.4 mm) 3/18/04 3 603 778 2300 WWW.WALLINDUSTRIES.COM |
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