title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

DC-DC Converters POL TypeInstruction ManualTable 2.3 Recommended capacitor and max CoNo. Model Recommended Max Co1 BRNS6 47μF×1+100μF×1 1,000μF2 BRNS12 47μF×1+100μF×1 1,000μF3 BRNS20 100μF×2 1,000μF!The output ripple voltage may grow big by resonance with Co andESL of the wiring. If resonance frequency and switching frequencyare close.!Ripple and Ripple Noise are measured, as shown in the Fig.2.4.Cin is shown in Table2.2, Co1 and Co2 is shown in Table 2.4.3mmDCinputCinOscilloscopeBw:20MHz+VINGNDRC+VOUTGNDCo1 Co225mm1.5m 50WCoaxial cableR=50WC=4700pF or 10000pFFig.2.4 Measuring method of Ripple and Ripple NoiseLoadTable 2.4 Co1 and Co2 which is used in measuringNo. Model Vo Co1 Co210.6-3.3V 47μF×1 100μF×1BRNS62 3.3-5.5V 22μF×1 22μF×130.6-3.3V 47μF×1 100μF×1BRNS124 3.3-5.5V 22μF×1 22μF×250.6-3.3V 100μF×1 100μF×1BRNS206 3.3-5.5V 22μF×2 22μF×23 Function3.1 Overcurrent protection!Over Current Protection (OCP) is built-in and works over 105% ofthe rated current or higher. However, use in an overcurrent situationmust be avoided whenever possible.The output voltage of the power module will recover automaticallywhen the fault causing overcurrent is corrected.When the output voltage drops after OCP works, the power moduleenters a“hiccup mode”where it repeatedly turns on and off ata certain frequency.3.2 Remote ON/OFF!The remote ON/OFF function is incorporated in the circuit and operatedwith RC and -Vin. If positive logic control is required, orderthe power supply with“-R”option.Table 3.1 Specifi cation of Remote ON/OFFON/OFFlogicStandard NegativeOptional-RPositiveBetween RC and GNDOutoutvoltageL level (-0.2-0.8V) or short or openONH level (3.0-VIN)OFFL level (-0.2-0.3V) or shortOFFH level (3.0-VIN) or openON!When remote on/off function is not used, please open RC or connectedto the GND terminal.DCinputSW+VINRCGNDDCinputTransistor+VINRCGND(a)(b)VCC( Vin)RCRCGNDExternalPower supply(c)GNDI C(d)3.3 Remote sensingFig.3.1 RC connection example(1) When the remote sensing function is not in use+VOUT+S- SGNDShort at pin rootLOADFig.3.2 Connection when the remort sensing is in useBRNS-8