NDY Series www.murata-ps.com Isolated 3W Wide Input DC/DC Converters SELECTION GUIDE Output current 3 MTTF Min. Order code Full load 1 Load V (Nom.) V mA mA mA % pF kHrs NDY0505C 5 5 100-150 400-600 615 66 40 1939 NDY0509C 5 9 55-83 222-333 563 72 52 1926 NDY0512C 5 12 42-62 166-250 548 71 43 1907 FEATURES NDY0515C 5 15 33-50 133-200 533 73 44 1924 UL 60950 recognised NDY1205C 12 5 150 600 362 71 36 1928 NDY1209C 12 9 83 333 320 78 52 1916 Industry standard footprint NDY1212C 12 12 62 250 316 78 44 1897 Efciency to 82% NDY1215C 12 15 50 200 308 79 47 1914 NDY2403C 24 3.3 227 909 178 70 30 1671 1kVDC Isolation Hi Pot Test NDY2405C 24 5 150 600 174 70 36 1673 2:1 wide input range NDY2409C 24 9 83 333 156 78 52 1663 Single isolated output NDY2412C 24 12 62 250 154 80 44 1644 NDY2415C 24 15 50 200 150 82 54 1657 Short circuit protection NDY4805C 48 5 150 600 87 73 35 1668 Low prole 24 pin case Recommended Alternative Operating temperature range -40C to 85C NDY4803C 48 3.3 227 909 87 71 30 1676 NCS3S4803SC 5V, 12V, 24V & 48V input NDY4809C 48 9 83 333 78 80 52 1663 Contact Murata NDY4812C 48 12 62 250 77 81 44 1648 NCS3S4812SC 3.3V, 5V, 9V, 12V & 15V output NDY4815C 48 15 50 200 76 81 53 1661 NCS3S4815SC Internal SMD construction INPUT CHARACTERISTICS Fully encapsulated Parameter Conditions Min. Typ. Max. Units All NDY05XX 4.5 5 9 DESCRIPTION All NDY12XX 9 12 18 The NDY series is a range of low prole DC/DC Voltage range VDC All NDY24XX 18 24 36 converters offering a single regulated output over a All NDY48XX 36 48 72 2:1 input voltage range. All parts deliver 3W output NDY2403 180 360 power up to 85C without heatsinking, except the NDY4803 140 290 4.5V to 9V input voltage range which should be All NDY05XX 400 500 derated to 2W at the lower input voltage. A yback 2 Reected ripple current mA p-p All NDY12XX 150 170 oscillator design with isolated feedback is used to All other NDY24XX 290 360 give regulation over the full operating range of 25% to 100% of full load. It is strongly recommended All other NDY48XX 100 127 that external capacitors be used on input and output to guarantee performance over full load and ABSOLUTE MAXIMUM RATINGS input voltage range. Short-circuit protection Continuous Lead temperature 1.5mm from case for 10 seconds 300C Minimum load 25% of rated load Input voltage 05 types 10V Input voltage 12 types 20V Input voltage 24 types 40V Input voltage 48 types 80V Internal dissipation 1.7W 1. Refer to power derating graph. 2. Measured at full load with external input/output capacitors, refer to lter circuit 1. 3. Calculated using MIL-HDBK-217F with nominal input voltage at full load (ground benign) at 25C. For full details go to All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied. www.murata-ps.com/rohs www.murata-ps.com/support KDC NDY.G01 Page 1 of 4 Input voltage Rated output voltage Input current full load 2 Efciency (Min.) Isolation capacitanceNDY Series Isolated 3W Wide Input DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Voltage set point accuracy With external input/output capacitors 1 5 % Low line to high line, 3.3V output with external input/output capacitors 0.05 0.25 % Line regulation Low line to high line, all other outputs with external input/output capacitors 0.05 0.5 % 25% load to 100% load, 3.3V output with external input/output capacitors 0.6 1.0 % Load regulation 25% load to 100% load, all other outputs with external input/output capacitors 0.2 0.5 % BW = 20Hz to 300kHz, 3.3V output with external input/output capacitors 80 120 1 Ripple mV rms BW = 20Hz to 300kHz, all other outputs with external input/output capacitors 5 10 BW = DC to 100MHz, 3.3V output with external input/output capacitors 180 1 Noise mV p-p BW = DC to 20MHz, all other outputs with external input/output capacitors 50 100 GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 100% load VIN nominal 3.3V output 160 220 25% load VIN nominal 3.3V output 290 560 Switching frequency kHz 100% load VIN nominal, all other outputs 80 220 25% load VIN nominal, all other outputs 290 560 TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Operation Ambient temperature -40 85 C Storage -50 130 Cooling Free air convection ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 1000 VDC Resistance Viso=500VDC 1 G 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 NDY 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 The NDY series has been recognized by Underwriters Laboratory for functional isolation. 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 NDY 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. SAFETY APPROVAL The NDY series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation for a maximum case temperature limit of 130C (case temperature measured on the face opposite the pins). File number E151252 applies. Note: This series gained UL 60950 recognition for products manufactured on or after datecode G1123, any NDY parts manufactured before this date code should not be considered UL 60950 recognized. Any NDY that is UL recognized will be printed with the UL logo. 1. For lower ripple refer to circuit for reduced ripple. www.murata-ps.com/support KDC NDY.G01 Page 2 of 4