CRV1 Series
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3kVDC Isolated 1W Single & Dual Output DC/DC Converters
SELECTION GUIDE
Order Code
MIL. Tel.
V V mA % mVp-p % pF
kHrs
CRV1S0505SC 5 5 200 294 11 14 16 23 67 70 23 4241
CRV1D0512SC 5 12 42 256 5 7 6.7 8 76 79 26 1579
FEATURES CRV1D1212SC 12 12 42 111 4 5 6 10 77 81 42 1287
CRV1S1215SC 12 15 67 108 4 5 8.5 17 79 83 42 1462
UL 60950 Recognised
Wide temperature performance at full INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
1 Watt load, 40C to 85C
Continuous operation, 5V input types 4.5 5 5.5
Voltage range V
UL 94V-0 package material
Continuous operation, 12V input types 10.8 12 13.2
Industry standard pinout
Reected ripple current All input types 20 40 mA p-p
3kVDC isolation (1 minute) Hi Pot Test
OUTPUT CHARACTERISTICS
5V & 12V inputs
Parameter Conditions Min. Typ. Max. Units
Rated Power TA=-40C to 85C, See derating curve 1W
5V, 12V & 15V output
Voltage Set Point Accuracy See tolerance envelope
Fully encapsulated with toroidal
Line regulation High VIN to low VIN 1.1 1.2 %/%
magnetics
ISOLATION CHARACTERISTICS
No external components required
Parameter Conditions Min. Typ. Max. Units
No electrolytic or tantalum capacitors
Isolation test voltage Flash tested for 1 minute 3000 VDC
Resistance Viso= 1000VDC 10 G
PRODUCT OVERVIEW
GENERAL CHARACTERISTICS
The CRV1 series of industrial temperature range Parameter Conditions Min. Typ. Max. Units
5V input types 120
DC/DC converters are the standard buliding blocks
Switching frequency kHz
for on-board distributed power systems. They 12V input types 150
are ideally suited for providing local supplies on
control system boards with the added benet
ABSOLUTE MAXIMUM RATINGS
of 3kVDC galvanic isolation to reduce switching
Lead temperature 1.5mm from case for 10 seconds 260C
noise. Available in SIP package with dual and
Input voltage VIN, 5V input 7V
single output pinout. All of the rated power may be
Input voltage VIN, 12V input 15V
drawn from a single output rail provided the total
loaddoes not exceed 1 watt.tjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj-
TEMPERATURE CHARACTERISTICS
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj Parameter Conditions Min. Typ. Max. Units
Specication All output types -40 85
Storage -50 125
C
5V output types 28
Case Temperature above
ambient All other output types 25
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
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KDC_CRV1.B01 Page 1 of 7
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
MTTFCRV1 Series
3kVDC Isolated 1W Single & Dual Output DC/DC Converters
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 CRV1 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 CRV1 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 CRV1 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 CRV1 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation.
The CRV1 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.
CRV1S05xxxxC: 0.5A
CRV1S12xxxxC: 0.2A
All fuses should be UL recognized and rated to at least the maximum allowable DC input voltage.
File number E151252 applies.
RoHS COMPLIANT 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. Both types in this series is backward compatible with Sn/Pb
soldering systems.
For further information, please visit www.murata-ps.com/rohs
TEMPERATURE DERATING GRAPH
1.5
85C
1.0
0.5 Safe Operating Area
120C
0
-40 0 50 100 150
Ambient Temperature (C)
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KDC_CRV1.B01 Page 2 of 7
Output Power (W)