title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

CQHS-seriesPin Configuration?CQHS250-VIN 3RC 2+VIN 1*bottom view87654-VOUT-STRM+S+VOUTNo.Pin NameFunction1+VIN+DC input2RCRemote ON/OFF3-VIN-DC input4+VOUT+DC output5+S+Remote sensing6TRMAdjustment of output voltage7-S-Remote sensing8-VOUT-DC output-Mounting holeMounting hole?CQHS300/CQHS3502-Mounting hole-VIN 3RC 2+VIN 187654-VOUT-STRM+S+VOUT*bottom viewImplementation・Mounting MethodMounting method!Use with the conduction cooling (e.g. heat dissipation from the aluminum base plate to the attached heat sink).!Unless the baseplate and the heat sink are placed in close contact with each other, contact thermal resistance will increase until heat dissipationbecomes insuffi cient. Always use either thermal grease or a thermal sheet.If processing thermal grease, apply it thinly and evenly.Also, when processing the thermal sheet, make a hole according to the position of the screw.If the four corners are cut as shown in the fi gure below, stress may be applied to the edges of the base plate during fi xing, which may damagethe built-in parts, so avoid such processing.Good Bad BadImage of using thermal sheet and precautions when processing!When multiple power modules are used side by side, position them with suffi cient spaces to allow adequate air ventilation so that the temperatureof each power module will remain within the temperature range shown in the“Derating”.!Do not pass the DC input pattern underneath the power module as this will increase conducted noise. Place the DC input pattern awayfrom the power module.Do not pass the DC output pattern underneath the power module as this will increase output noise. Place the DCoutput pattern away from the power module.!High frequency noise is radiated from the power module. When mounting the power module on a PCB, leave a copper pattern on the PCBto let it act as a shield and connect this pattern to the mounting hole.CQHS-8