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COSEL Power Supply, Noise Filter 2025 Product Catalog
DC-DC Converters PCB Mount Type MG15, MG30, MG40, MG80 Instruction Manual7.3 MGF40!Please have suffi cient ventilation to keep the temperature of pointA in Fig 7.3 at Table 7.1 or below.Please also make sure that the ambient temperature does not exceed85C.Point A (Center of the Case)8 Peak Current(Pulse Load)!If a load connected to a converter is a pulse load, you can providea pulse current by connecting an electrolytic capacitor externallyto the output side.+Vin+VoutCIopPulse LoadVoFig.7.3 Temperature Measuring Point on the case (Top View)Table 7.1 The temperature of pointAModelpoint AMGFO4005O105CMGFO4024O110CMGFO4048O110CWaveform of PulseLoad Current0-Vin-VoutIopIsExternal ElectrolyticCapacitorIop:Current at PeakIs :Steady-state Current7.4 MGF80!Please have suffi cient ventilation to keep the temperature of pointA in Fig.7.4 at Fig.7.5 or below.Please also make sure that the ambient temperature does not exceed85C.Waveform ofOutput Voltage0tTDVoDVo:Fluctuation ofOutput VoltagePoint A (Center of the Case)Fig.7.4 Temperature Measuring Point on the case (Top View)!The average output current lav is expressed in the following formula.(Iop - Is)Xtlav = ls+T!Required electrolytic capacitor C can be obtained from the followingformula.(Iop - Iav)XtC =DVo!Depending on the conditions, output may be stopped by the internalprotection circuit.100Load factor [%]500-40 -20 0 20 40 60 80 100 (105) 120Temperature of pointA[C]Fig.7.5 The temperature of PointAMG-85
