title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

DC-DC Converters PCB Mount Type MG15, MG30, MG40, MG80 Instruction Manual1 Function1.1 Input Voltage Range!If output voltage value doesn’t fall within specifi cations, a unit maynot operate in accordance with specifi cations and/or fail.1.2 Overcurrent Protection!Overcurrent OperationAn overcurrent protection circuit is built-in and activated over105% of the rated current or above. It prevents the unit from shortcircuit and overcurrent. The output voltage of the power supplywill recover automatically if the fault causing over current is corrected.When the output voltage drops after OCP works, the power supplyenters a“hiccup mode”where it repeatedly turns on and off at acertain frequency.1.3 Overvoltage Protection (Excluding MG15)!Over Voltage Protection (OVP) is built in. When OVP works, outputvoltage can be recovered by shutting down DC input for atleast one second or by turning off the remote control switch forone second without shutting down the DC input. The recoverytime varies according to input voltage and input capacitance.Remarks :Note that devices inside the power supply may fail when a voltagegreater than the rated output voltage is applied from an externalpower supply to the output terminal of the power supply. Thiscould happen in in-coming inspections that include OVP functiontest or when voltage is applied from the load circuit.1.4 Isolation!When you run a Hi-Pot test as receiving inspection, graduallyincrease the voltage to start. When you shut down, decrease thevoltage gradually by using a dial. Please avoid a Hi-Pot tester witha timer because, when the timer is turned ON or OFF, it may generatea voltage a few times higher than the applied voltage.! Please note that if foreign matter such as flux during solderingadheres to the vicinity of the case, the withstand voltage and isolatiionresistance may decrease.1.5 Output Voltage Adjustment Range(MGS/MGFS Only)!The output voltage is adjustable through an external potentiometer.Adjust only within the range of±10% of the rated voltage.!To increase the output voltage, turn the potentiometer so that theresistance value between 2 and 3 becomes small.!Please use a wire as short as possible to connect to the potentiometerand connect it from the pin on the power supply side. Temperaturecoeffi cient deteriorates when some types of resistors andpotentiometers are used. Please use the following types.MG-81Resistor............ Metal Film Type, Temperature Coefficient of±100ppm/C or belowPotentiometer... Cermet Type, Temperature Coefficient of±300ppm/C or below!If output voltage adjustment is not required, open the TRM pin.!Output voltage adjustment may increase to overvoltage protectionactivation range based on determined external resister values.+VoutTRM-Vout1 OutputExternalResistor R123External VRExternalResistor R2LoadFig.1.1 Connecting External DevicesTable 1.1 List of External DevicesItem #Output VoltageConstant of External Device [W](Adjustable within±10%)VRR1R213.3V1k10010025V1k100270312V5k10k1.5k415V5k10k1k5±5V6±12V7±15V1.6 Remote ON/ OFF!The remote ON/OFF function is incorporated in the input circuitand operated with RC and -Vin. If positive logic control is required,order the power supply with“-R”option.Table 1.2 Remote ON/OFF Specifi cations (MG15/MG30)ModelON/OFFOutputBetween RC and -VinlogicVoltageStandardNegativeOption-RPositiveTable 1.3 Remote ON/OFF Specifi cations (MG40/MG80)ON/OFFOutputModelBetween RC and -VinlogicVoltageL lebel (0 - 0.4V) or short ONStandard NegativeMGFOH lebel (3 - 12V) or open OFFO05OL lebel (0 - 0.4V) or short OFFOption-R PositiveH lebel (3 - 12V) or open ONMGFOL lebel (0 - 0.8V) or short ONStandard NegativeO24O/H lebel (3 - 12V) or open OFFMGFOL lebel (0 - 0.8V) or short OFFO48O Option-R PositiveH lebel (3 - 12V) or open ON!When RC is at low level, a current of 0.5mA typ will follow out.(MG15/MG30)!When RC is at low level, a current of 0.05mA typ will follow out.(MG40/MG80)!When remote ON/OFF is not used, short RC and -Vin.