title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

DC-DC Converters POL TypeInstruction ManualPGOOD5Vmaximum 10%, the total output current must not exceed the valuedetermined by the following equation.(Output current at parallel operation)=(the rated current per unit)×(number of unit)×0.9GNDFig.3.11 Internal PGOOD circuit!Voltage of PGOOD pin become low when over current protectioncircuit is work, or output voltage is different from a set point morethan±12.5%.!If this function is unnecessary, please make PGOOD pin open.VIN+VINBRFS/BRDSMasterSHARESYNC *1+VINGNDBRFS/BRDSSlaveSHARESYNC *1GND+S-S+S-S+VOUT+TRMRtrm-TRM+VOUT+TRMRtrm-TRMVOUTVOUTAdjustment3.8 Sequence!Fig.3.12 is a sequence chart of each function of BRFS/BRDS.INPUTOUTPUTPGOODRCStart upvoltagePower supply startover current6.3ms(typ)1.2s(typ)RC:OFFFig.3.12 Sequence chart of BRFS/BRDS3.9 PMBus communication!PMBus communication is possible BRDS series.For more information please contact us.6.3ms(max)RC:ON4 Series and Parallel Operation4.1 Series operation!Series operation is not possible.4.2 Parallel operation!Parallel operation is possible BRFS60/100/120/150-BRDS series(BRFS30/40/60S is not possible). BRFS40/60S has a parallel operation“P”.!In parallel operation, wiring as Fig.4.1!Make the +S and -S of the slave power supply unconected.!To improve the load sharing of each unit, use the same length andsame wire size from each unit to the load.!As variance of output current drew from each power supply isBRFS/BRDS-20+VINBRFS/BRDSSlaveSHARESYNC *1GND+VOUT+S+TRMRtrm-TRM-S*1 Only BRDS60S100W or lessIn case of BRFS120/150 and BRDS120/150, please contact usFig.4.1 Example of wiring method in parallel operation!Make power supply from the same input power supply.!Total number of units should be no more than 5 pieces.!PGOOD of slave power supply output the operating conditions.When power supply is in operation, PGOOD output high level.At the time of stop, it output low level.!Please connect each other’s SEQ pins if you use SEQ pin.!Voltage drop from a power supply to the sensing point should beless than 0.2V for stable control.!Only use RC pin of the master power supply, RC pin of the slavepower supply should be short to GND.Or let RC pin’s of the masterpower supply and the slave power supply short, and please use it.!If this function is unnecessary, please make SHARE pin open.!In parallel operation, please use a single model together. When itis necessary to use different model together, please contact us.!In the case of stop using the SEQ function in parallel operation,the power supply will immediately stop when SEQ terminal voltageis below the output voltage set by the R TRM.!Do not connection external clock to the SYNC pin.5 Cleaning!When cleaning is necessary, clean under the following conditions.Method : Varnishing, ultrasonic wave and vaporCleaning agents : IPA (Solvent type)Total time : 2 minutes or less!Do not apply pressure to the lead and name plate with a brush orscratch it during the cleaning.!After cleaning, dry them enough