NCS6 Series www.murata-ps.com Isolated 6W 4:1 Input Single Output DC/DC Converters SELECTION GUIDE Input Voltage Order Code FEATURES RoHS compliant 4:1 Wide range voltage input Operating temperature range –40°C to 85°C Typical load regulation from 0.06% NCS6S1203C NCS6S1205C NCS6S1212C NCS6S1215C NCS6S4803C NCS6S4805C NCS6S4812C NCS6S4815C 3.3 5 12 15 3.3 5 12 15 1.52 1.2 0.5 0.4 1.52 1.2 0.5 0.4 Input Current Ripple & Current Noise 0% 100% (Typ.) Load Load mA mA mV p-p 10 7 10 12 10 6 7 7 550 610 580 580 150 160 150 150 Efficiency MTTF1 Min. Typ. % % Hrs 30 30 30 30 40 30 30 30 75 79 84 85 73 78 82 83 78 82 86 87 76 80 84 84 662,073 521,975 435,567 437,582 483,460 441,850 408,555 416,319 Min. Typ. Max. Units 9 18 12 48 8.5 7.5 16.7 15.8 12 9 36 75 V Typ. Max. INPUT CHARACTERISTICS Parameter Voltage range Under voltage lock out 12V & 48V Nominal input Power density 0.94W/cm3 V 12 12 12 12 48 48 48 48 Nom. 1.5kVDC Isolation Typical efficiency to 87% V Output Current 100% Load A Output Voltage Reflected ripple current Conditions All NCS6S12 types All NCS6S48 types Turn on threshold NCS6S12 Turn off threshold NCS6S12 Turn on threshold NCS6S48 Turn off threshold NCS6S48 All NCS6S12 types All NCS6S48 types V mA p-p UL 94V-0 Package materials No electrolytic capacitors Low noise Under voltage lock out Current fold back PRODUCT OVERVIEW The NCS6 series of DC/DC converters offers single output voltages from input voltage ranges of 9-36V and 18-75V. The NCS6 is housed in an industry standard package with a standard pinout. The NCS6 is packaged in a metal case for improved EMI shielding and is also encapsulated for superior thermal performance. Applications include telecommunications, battery powered systems, process control and distributed power systems. OUTPUT CHARACTERISTICS Parameter Conditions Rated power 5V, 12V & 15V output types 3.3V output types Voltage set point accuracy Line regulation Low line to high line Load Regulation 10% total load to 100% total load Start-up Time Min. 0.002 0.5 0.3 0.06 2.5 4.6 5.5 NCS6Sxx03C NCS6Sxx05C NCS6Sxx12C, NCS6Sxx15C 3.3V & 5V output types 12V output types 15V output types 6 5 ±2 0.2 0.6 0.5 0.2 Units W % % % mS ISOLATION CHARACTERISTICS Parameter Conditions Min. Isolation test voltage Resistance Capacitance Flash tested for 1 seconds Viso = 1kVDC 1500 1 Typ. 225 Max. Units VDC GΩ pF ABSOLUTE MAXIMUM RATINGS For full details go to www.murata-ps.com/rohs www.murata-ps.com Short-circuit protection (for SELV input voltages) Internal power dissipation Continuous 2.1W Lead temperature 1.0mm from case for 10 seconds (to JEDEC JESD22-B106 ISS C) 260°C Minimum output load for specification (see application notes) Input voltage, NCS6 12V input types Input voltage, NCS6 48V input types 10% of rated load 40V 80V 1 Calculated using MIL-HDBK-217F FN2, parts stress method with nominal input voltage at full load. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2009-09-21 KDC_NCS6C.B01 Page 1 of 6 NCS6 Series Isolated 6W 4:1 Input Single Output DC/DC Converters GENERAL CHARACTERISTICS1 Parameter Conditions Min. Typ. Switching frequency Max. Units 180 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Operation Storage Typ. -40 -50 Case temperature rise above ambient 100% Load, Nom VIN, Still Air, Thermal shutdown Case Temperature Max. Units 85 125 3.3V 5V 12V 15V 32 32 28 26 110 °C APPLICATION NOTES Output Capacitors The NCS6 series does not require output capacitors to meet datasheet specification. To meet datasheet specification, output capacitance should not exceed: Output Voltage (V) 3.3 5 12 15 Output Capacitance (μF) 470 470 220 220 Minimum Load The minimum load to meet full datasheet specification is 10% of the full rated load across the specified input voltage range. Between 0% and 10% output loading, the output voltage will remain within data sheet specification however, output ripple and noise will increase but will still be below 50mV p-p. 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 specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NCS6 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1.5kVDC 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 specific agency approvals, such as the NCS6 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 NCS6 series has an ER 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 specified 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. www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2009-09-21 KDC_NCS6C.B01 Page 2 of 6 NCS6 Series Isolated 6W 4:1 Input Single Output DC/DC Converters RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260ºC for 10 seconds. The pin termination finish on this product series is a Gold flash (0.05-0.10 micron) over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs CHARACTERISATION TEST METHODS Ripple & Noise Characterisation Method Ripple and noise measurements are performed with the following test configuration. C1 1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter 10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less C2 than 100mΩ at 100 kHz C3 100nF multilayer ceramic capacitor, general purpose R1 450Ω resistor, carbon film, ±1% tolerance R2 50Ω BNC termination T1 3T of the coax cable through a ferrite toroid RLOAD Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires Measured values are multiplied by 10 to obtain the specified values. Differential Mode Noise Test Schematic DC/DC Converter OSCILLOSCOPE C1 C2 C3 + SUPPLY Input - + R1 T1 R2 Y INPUT Output - R LOAD www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2009-09-21 KDC_NCS6C.B01 Page 3 of 6 NCS6 Series Isolated 6W 4:1 Input Single Output DC/DC Converters EFFICIENCY VS LOAD NCS6S1203C NCS6S1205C 81 90 80 80 70 24V Efficiency (%) Efficiency (%) 79 78 12V 77 76 12V 60 24V 50 40 30 75 20 74 10 73 10% 0 20% 30% 40% 50% 60% 70% 80% 90% 10% 100% 20% 30% 40% NCS6S1212C 90 80 80 70 12V 50 Efficiency (%) Efficiency (%) 24V 40 60 90% 100% 40 30 20 20 10 10 10% 20% 30% 40% 50% 60% 70% 80% 90% 0 100% 10% 20% 30% 40% Load (%) NCS6S4803C 90 80 80 70 70 60 50% 60% Load (%) 70% 80% 90% 100% NCS6S4805C 90 24V 50 Efficiency (%) Efficiency (%) 80% 24V 12V 50 30 0 48V 40 30 60 24V 48V 50 40 30 20 20 10 10 0 20% 30% 40% 50% 60% Load (%) 70% 80% 90% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% 100% NCS6S4812C Load (%) NCS6S4815C 90 100 80 90 70 80 24V 70 48V Efficiency (%) Efficiency (%) 70% 70 60 60 60% NCS6S1215C 90 0 10% 50% Load (%) Load (%) 50 40 30 60 50 24V 48V 40 30 20 20 10 10 0 0 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% Load (%) www.murata-ps.com 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% Load (%) Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2009-09-21 KDC_NCS6C.B01 Page 4 of 6 NCS6 Series Isolated 6W 4:1 Input Single Output DC/DC Converters TEMPERATURE DERATING NCS6S1205C 6 7 5 6 5 4 3 Output Power (W) Output Power (W) NCS6S1203C 400 lfm 200 lfm 2 100 lfm 400 lfm 4 200 lfm 100 lfm 3 2 1 still air 1 still air 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 0 80 -40 -30 -20 -10 0 Ambient Temperature (ºC) 6 6 5 400 lfm 40 50 60 4 200 lfm 3 100 lfm 400 lfm 5 Output Power (W) Output Power (W) 7 70 80 200 lfm 4 100 lfm 3 2 still air still air 1 1 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 0 -40 -30 -20 -10 0 80 10 20 30 40 50 60 70 80 Ambient Temperature (ºC) Ambient Temperature (ºC) NCS6S4803C NCS6S4805C 7 6 6 Output Power (W) 5 Output Power (W) 30 NCS6S1215C 7 2 400 lfm 4 200 lfm 100 lfm 3 2 5 1 0 -40 -30 -20 -10 0 0 20 30 40 50 60 70 200 lfm 3 1 10 400 lfm 4 100 lfm 2 still air still air -40 -30 -20 -10 0 80 Ambient Temperature (ºC) 10 20 30 40 50 60 70 80 Ambient Temperature (ºC) NCS6S4812C NCS6S4815C 7 7 6 6 400 lfm Output Power (W) Output Power (W) 20 Ambient Temperature (ºC) NCS6S1212C 5 10 100 lfm 200 lfm 4 3 2 5 4 400 lfm 3 200 lfm 2 still air 1 100 lfm 1 still air 0 -40 -30 -20 -10 0 10 20 30 40 Ambient Temperature (ºC) www.murata-ps.com 50 60 70 80 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 Ambient Temperature (ºC) Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2009-09-21 KDC_NCS6C.B01 Page 5 of 6 NCS6 Series Isolated 6W 4:1 Input Single Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS 0.787 (20.0) NCS6S0505C XYYWW 1.26 (32.0) Pin Function Single 2 3 11 14 16 22 23 -VIN -VIN N/C +VOUT -VOUT +VIN +VIN TUBE OUTLINE DIMENSIONS 0.04±0.006 (1.00±0.15) 0.256 (6.50) 0.906 (23.0) 0.394 (10.0) 0.02 (0.5) 0.335 (8.5) 0.020 (0.50) 0.600 (15.24) 0.807 (20.5) 0.200 (5.08) Tube length 20.47 (520)) All dimensions in inches ±0.010 (mm 0.25mm). 0.093 (2.36) 2 3 Quantity: 15 11 RECOMMENDED FOOTPRINT DETAILS 0.600 (15.24) 7 HOLES 1.0mm Ø 23 22 0.100 (2.54) 16 14 0.1 (2.54) 0.180 (4.57) Weight: 17g All dimensions in inches (mm) ±0.020 (0.5) except pin to pin tolerance ±0.010 (0.25). All pins on a 0.100 (2.54) pitch and within 0.010 (0.25) of true position. 0.1 (2.54) The copper case is connected to the output (-VOUT) pin. Care is needed in the design of this circuit board on which the converter is mounted. Top side tracks must not contact the edge of the case on the underside of the unit. Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED www.murata-ps.com/locations All dimensions in inches ±0.010 (± 0.25mm). Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2009 Murata Power Solutions, Inc. Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2009-09-21 KDC_NCS6C.B01 Page 6 of 6