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MTU1S0515MC Datasheet(PDF) 4 Page - Murata Power Solutions Inc. |
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MTU1S0515MC Datasheet(HTML) 4 Page - Murata Power Solutions Inc. |
4 / 7 page MTU1 Series Isolated 1W Single & Dual Output SM DC/DC Converters KDC_MTU.B01 Page 4 of 7 www.murata-ps.com/support APPLICATION NOTES Minimum load The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%. Capacitive loading and start up Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF. 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 C2 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 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 OSCILLOSCOPE Y INPUT SUPPLY C1 C2 C3 R1 T1 R2 Input Output DC/DC Converter R LOAD + + - - Typical Start-Up Wave Form Start-up time Start-up time ms ms MTU1S0305MC 1.7 MTU1D0305MC 3.1 MTU1S0505MC 0.9 MTU1D0505MC 1.8 MTU1S0509MC 2.7 MTU1D0509MC 5.7 MTU1S0512MC 4.3 MTU1D0512MC 10.1 MTU1S0515MC 7.5 MTU1D0515MC 19.1 MTU1S1205MC 0.9 MTU1D1205MC 1.5 MTU1S1209MC 1.9 MTU1D1209MC 4 MTU1S1212MC 3.3 MTU1D1212MC 7.5 MTU1S1215MC 4.7 MTU1D1215MC 12.5 |
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