CRL2 Series www.murata-ps.com Isolated 2W Single Output DC/DC Converters SELECTION GUIDE Order Code MIL. Tel. V V mA % mVp-p % pF kHrs CRL2S0505SC 5 5 400 513 6 8 96 200 75 78 19 2327 CRL2S1205SC 12 5 400 207 4 5 76 200 77 81 28 716 FEATURES UL 60950 Recognised INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Wide temperature performance at full Continuous operation, 5V input types 4.5 5 5.5 2 Watt load, 40C to 85C Voltage range V Continuous operation, 12V input types 10.8 12 13.2 UL 94V-0 package material 5V input types 33 Reected ripple current mA p-p 12V input types 38 Single isolated output Industry standard pinout OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 1kVDC isolation Hi Pot Test Rated Power TA=-40C to 85C 1.0 W 5V & 12V Input Voltage Set Point Accuracy See tolerance envelope Line regulation High VIN to low VIN 1.1 1.2 %/% 5V Output Fully encapsulated with toroidal ISOLATION CHARACTERISTICS magnetics Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 1000 VDC No external components required Resistance Viso= 1000VDC 10 G Pin compatible with CME, CRE1, LME, MEE1, MEE3, NKE, NME & NML series GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units No electrolytic or tantalum capacitors Switching frequency All input types 90 kHz PRODUCT OVERVIEW ABSOLUTE MAXIMUM RATINGS The CRL2 series of DC/DC Converters is particular- Lead temperature 1.5mm from case for 10 seconds 260C ly suited to isolating and/or converting DC power Input voltage VIN, 5V input 7V rails. The galvanic isolation allows the device to be Input voltage VIN, 12V input 15V congured to provide an isolated negative rail in systems where only positive rails exist. The wide TEMPERATURE CHARACTERISTICS temperature range guarantees startup from 40C Parameter Conditions Min. Typ. Max. Units and full 2 watt output at 85C. Pin compatibility Specication -40 85 with the NME and LME ensures ease of upgrade- Storage -50 130 ability.jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj- C Case Temperature above 45 jjjjjjjjjjjjjj ambient Cooling Free air convection 1. See Ripple & Noise characterisation method. 2. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load. All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC CRL2.B01 Page 1 of 6 Nominal Input Voltage Output Voltage Output Current Input Current at Rated Load Load Regulation (Typ) Load Regulation (Max) 1 Ripple & Noise (Typ) 1 Ripple & Noise (Max) Efciency (Min) Efciency (Typ) Isolation Capacitance 2 MTTFCRL2 Series Isolated 2W Single Output DC/DC Converters TOLERANCE ENVELOPE The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to changes in output loading. 0505: 1205: +6% +4% +3% +2% +1% 0% -2% -3% 100 75 100 10 25 50 75 10 25 50 Output Load Current (%) Output Load Current (%) 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 CRL2 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 CRL2 has been recognised by Underwriters Laboratory for functional insulation, 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 CRL2 series has toroidal isolation transformers, 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 CRL2 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum still air ambient temperature of 100C as measured at any point on the case of the unit (hotspot). The CRL2 Series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used with ratings as dened below. CRL2x05xxxSC: 0.8A CRL2x12xxxSC: 0.315A All fuses should be UL recognised, 125V rated. File number E151252 applies. RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260C for 10 seconds. The pin termination nish on this product series is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs www.murata-ps.com/support KDC CRL2.B01 Page 2 of 6 Output Voltage Output Voltage