NDL Series www.murata-ps.com Isolated 2W Wide Input Single Output DC/DC Converters SELECTION GUIDE 1 2 Output Current Input Current Input Rated Output 4 MTTF Voltage Voltage Order Code 3 Min Load Full Load Full Load V (nom.) V mA mA mA % pF kHrs NDL0505SC 5 5 100 400 606 66 26 2015 NDL0509SC 5 9 55 222 558 71 27 1998 NDL0512SC 5 12 42 167 559 71 26 1980 NDL0515SC 5 15 33 134 549 73 27 1965 12 5 100 400 228 73 39 1994 NDL1205SC FEATURES NDL1209SC 12 9 55 222 211 79 38 1981 RoHS compliant NDL1212SC 12 12 42 167 208 80 47 1961 NDL1215SC 12 15 33 134 206 81 47 1947 2:1 wide range voltage input NDL2405SC 24 5 100 400 112 74 37 1722 Continuous short circuit protection with NDL2409SC 24 9 55 222 102 81 40 1711 current foldback 24 12 42 167 100 83 51 1696 NDL2412SC NDL2415SC 24 15 33 134 100 83 58 1685 Operating temperature range -40C to 85C NDL4805SC 48 5 100 400 57 73 39 1719 0.75% regulation 48 9 55 222 52 80 40 1709 NDL4809SC NDL4812SC 48 12 42 167 51 81 53 1694 1kVDC Isolation NDL4815SC 48 15 33 134 51 82 65 1683 Efciency to 83% 3 Power density 0.9W/cm INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 5V, 12V, 24V & 48V nominal input All NDL05 types 4.5 5 9 5V, 9V, 12V & 15V output All NDL12 types 9 12 18 Voltage range VDC All NDL24 types 18 24 36 No electrolytic capacitors All NDL48 types 36 48 72 Fully encapsulated All NDL05 types with 100F at input 250 Reected ripple All NDL12 types with 100F at input 150 External control mA p-p current All NDL24 types with 10F at input 300 380 Low noise All NDL48 types with 10F at input 140 170 Fully encapsulated ABSOLUTE MAXIMUM RATINGS Short-circuit protection Continuous DESCRIPTION Lead temperature 1.5mm from case for 10 seconds 300C The NDL series is a range of high performance Control pin input current 15mA miniature DC/DC converters having regulated out- Input voltage 05 types 10V puts over the wide temperature range of -40C to Input voltage 12 types 20V 85C. The input voltage range is 2:1 with the output Input voltage 24 types 40V power at 2 watts and the input to output isola- Input voltage 48 types 80V tion is 1kVDC. Continuous short circuit protection, external control and extremely small SIP packaging 1. Refer to power derating graph for operating of 5V input types at 4.5 to 6V. provide state of the art functionality. Nominal input 2. Measured at full load with external input/output capacitors. voltages of 5, 12, 24 and 48V with output voltages 3. Please refer to minimum load application notes section on page 3. of 5,9,12 and 15V are available as standard with 4. Calculated using MIL-HDBK-217F with nominal input voltage at full load. custom parts on request. The plastic case is rated All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied. to UL94V-0 with encapsulant to UL94V-1. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC NDL.F05 Page 1 of 4 Efciency Isolation CapacitanceNDL Series Isolated 2W Wide Input Single Output DC/DC Converters OUTPUT CHARACTERISTICS 1 Parameter Conditions Typ. Max. Units All NDL05/12 input types with external input/output capacitors 1 3 Voltage set point accuracy % All NDL24/48 input types with external input/output capacitors 2 5 All NDL05/12 input types, low line to high line with external input/output capacitors 0.05 0.5 Line regulation % All NDL24/48 input types, low line to high line with external input/output capacitors 0.04 0.4 All NDL05/12 input types, minimum load to rated load with external input/output capacitors 0.2 0.75 Load regulation % All NDL24/48 input types, minimum load to rated load with external input/output capacitors 0.2 0.75 Ripple B/W = 20MHz to 300kHz with external input/output capacitors 5 10 mV rms All NDL05 input types, B/W =DC to 20MHz with external input/output capacitors 50 100 Noise All NDL12 input types, B/W =DC to 20MHz with external input/output capacitors 110 170 mV p-p All NDL24/48 input types, B/W =DC to 20MHz with external input/output capacitors 50 100 Shutdown power +VIN nominal 2.8 mW ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 1000 VDC Resistance VISO = 1000VDC 1G GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Control pin (CTRL) input current Please refer to control pin application note 6 10 15 mA Switching frequency Max. rated load to Min. rated load, VIN Min. to VIN. Max. 100 600 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Operation -40 85 C Storage -50 130 Cooling Free air convection TECHNICAL NOTES ISOLATION VOLTAGE Hi Pot Test, Flash Tested, Withstand Voltage, Proof Voltage, Dielectric Withstand Voltage & Isolation Test Voltage are all terms that relate to the same thing, a test voltage, applied for a specied time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NDL series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second. A question commonly asked is, What is the continuous voltage that can be applied across the part in normal operation For a part holding no specic agency approvals, such as the NDL series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety standard requirements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. The NDL series has an EI ferrite core, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specied test voltage. This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. 1. Refer to recommended test circuit for external input/output capacitors. www.murata-ps.com/support KDC NDL.F05 Page 2 of 4