CRV2 Series www.murata-ps.com 3kVDC Isolated 2W Single Output DC/DC Converter SELECTION GUIDE Order Code MIL. Tel. V V mA % mVp-p % pF kHrs CRV2S0505SC 5 5 400 470 5.7 7.3 24 40 80 83 28 3998 FEATURES INPUT CHARACTERISTICS UL 60950 Recognised Parameter Conditions Min. Typ. Max. Units Wide temperature performance at full Voltage range Continuous operation, 5V input types 4.5 5 5.5 V 2 Watt load, 40C to 85C Reected ripple current 5V input types 7.5 15 mA p-p UL 94V-0 package material OUTPUT CHARACTERISTICS Single isolated output Parameter Conditions Min. Typ. Max. Units Rated Power TA=-40C to 85C 2.0 W Industry standard pinout Voltage Set Point Accuracy See tolerance envelope 3kVDC isolation (1 minute) Hi Pot Test Line regulation High VIN to low VIN 1.1 1.2 %/% 5V Input ISOLATION CHARACTERISTICS 5V Output Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 minute 3000 VDC Fully encapsulated with toroidal Resistance Viso= 1000VDC 10 G magnetics No electrolytic or tantalum capacitors GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Switching frequency All input types 60 kHz PRODUCT OVERVIEW The CRV2 series of industrial temperature ABSOLUTE MAXIMUM RATINGS range DC/DC converters, available in industry Lead temperature 1.5mm from case for 10 seconds 260C standard SIP packaging offers a power Input voltage VIN 7V upgrade path from the 1W CRV1 series. jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication -40 85 Storage -50 125 C Case Temperature above 28 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. 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 CRV2.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 MTTFCRV2 Series 3kVDC Isolated 2W Single Output DC/DC Converter TEMPERATURE DERATING GRAPH TOLERANCE ENVELOPE 5% 3 3% 85C 2 0% 1 Safe Operating Area -3% 100 10 25 50 75 0 Output Load Current (%) -40 0 50 100 150 Ambient Temperature (C) 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. 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 CRV2 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 3kVDC for 1 minute. A question commonly asked is, What is the continuous voltage that can be applied across the part in normal operation The CRV2 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 CRV2 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 CRV2 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum still air ambient temperature of 85C and/or case tem- perature limit (case temperature measured on the face opposite the pins). The CRV2 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. CRV2S0505SC: 2A All fuses should be UL recognized and rated to at least the maximum allowable DC input voltage. 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 the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs www.murata-ps.com/support KDC CRV2.B01 Page 2 of 6 Output Power (W) Output Voltage