title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

DC-DC Converters POL TypeInstruction Manual3.6 Power good* VSEQ < 0.6V!With the voltage to input into SEQ pin, you can control a start sequenceof plural BRNS.(1) The same timeRC+VOUT ABRNS AGNDR SEQ1R SEQ2RSEQ2 0.6=R SEQ1 + R SEQ2 Vout A (Set Point)RC+VOUT BSEQ TRMBRNS BGNDRTRM2!By using PGOOD, it is possible to monitor power supply whethernormal operation or abnormal operation.!PGOOD terminal inside is comprised of an open drain.Sink current of PGOOD is 50μA min.DCInput100kW5V max+VINPGOOD+VOUT50mA min1mA maxGNDLoadVFig.3.8 Example of PGOOD circuit(2) The same voltage+VOUT A+VOUT BV RC AR SEQ2 0.6=R SEQ 1+R SEQ2 Vout B(Set Point)t!Voltage of PGOOD pin become low when over current protectioncircuit is work, or output voltage is different from a set point morethan±10%.!If this function is unnecessary, please make PGOOD pin open.RC+VOUT AR SEQ1RC+VOUT B3.7 SequenceBRNS AGNDR SEQ2SEQ TRMBRNS BGNDR TRM2!Fig.4.9 is a sequence chart of each function of BRNS.Start upvoltagepower supply startV+VOUT A+VOUT BV RC AINPUT2.0ms(typ)over current5ms(typ)2.0ms(typ)OUTPUTt(3) The time lagPGOOD+VOUT ARCBRNS AGNDRSEQ1TRRSEQ2SEQ1+VOUT BRCSEQ TRM VINBRNS BGNDRTRM2RSEQ3RCRC:OFFFig.3.9 Sequence chart of BRNSRC:ONV+VOUT A+VOUT BV RC AFig.3.7 Example of sequence control!If this function is unnecessary, please make SEQ pin open.t3.8 Frequency synchronization!BRNS can operate at the switching frequency that synchronizedto frequency of square wave input into SYNC pin.There is a delay of 300nsec.!Fig.3.10 is example of frequency synchronization. And recommendedwave form of SYNC pin is shown in Fig.3.11!If this function is unnecessary, please make PGOOD pin open orshort to GND.!Please wire the input pin of both power supplies which is synchronizingto the same pattern and voltage.BRNS-10