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2F1209XS Datasheet(PDF) 3 Page - Microdc power Technology Co., Ltd |
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2F1209XS Datasheet(HTML) 3 Page - Microdc power Technology Co., Ltd |
3 / 4 page 2E 2E-X -XS&2F S&2F-X -XS S S Series eries http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646 Page 3 of 4 TECHNICAL TECHNICAL NOTES 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. Professional Power Module E_XS&F_XS 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 E_XS&F_XS series has been recognized 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-amissible 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. 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 for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. EFFICIENCY EFFICIENCY VS VS LOAD LOAD 2F05(XX)XS 2F12(XX)XS 2E05(XX)XS 2E12(XX)XS CHARACTERISATION CHARACTERISATION TEST TEST METHODS METHODS Ripple & Noise Characterization Method Ripple and noise measurements are performed with the following test configuration. C1 1uF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter C2 10uF 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 100KHz C3 100nF multilayer ceramic capacitor, general purpose R1 450Ω resistor, carbon film,+/-1% tolerance R2 50Ω BNC termination T1 3T of the coxa 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 |
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