title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

DC-DC Converters Bus Converter-Power Module TypeInstruction Manual4.2 Parallel operation!Parallel operation is available by connecting the units as shown inFig.4.2. With this wiring, it is possible to adjust all output in moduleby single potentiometer. When output voltage adjustment is not inuse, VTRM wiring, VR1 are not necessary.!Constant current adjustment can be used, even in parallel operation.By changing the ITRM voltage of one power supply, constantcurrent adjustable for all power supplies. It is not necessary toconnect the ITRM terminals together.!Total current should not exceed the value calculated by the followingequation, and total number of units should be no more than 12pieces.(Output current at parallel operation)= (the rated current per unit)×(number of unit)×0.95!Please make sure that the wiring impedance of a load from eachpower supply becomes even.!Voltage drop from a power supply to the sensing point should beless than 0.5V for stable control.!If temperatures of aluminum base plates are different in the powersupply for parallel operation, the difference in output current becomeslarge. Design radiation to equalize plate temperatures byattaching the same heat sinks.!Connect the sensing line and the power line by one point afterconnecting each power supply’s sensing pins (+S, -S).!If the output current is less than 2% of the rated current, the outputvoltage ripple will be large.+VOUT+SVTRMCB-S-VOUTVR1Sensing pointCo +Load4.3 N+1 redundant operation?-P2!The -P2 option features a built-in ORingFET, enabling N+1 redundantoperation without the need for an external ORing device.!If you add one extra power supply in parallel operation, even ifone of the power supplies in your system fails, the remainingpower supplies continue to function.!The specifi cations of the -P2 option differ from the standard productin the following(a) Output voltage adjustment rangeThe output voltage cannot be adjusted to 6.0V or less.(b) Low voltage protectionIf the output voltage drops to 5V or less, the low voltage protectioncircuit will operate and the output will latch stop. The latched stopoperation can be released by reducing the DC input to 100V orless and resuming operation after 5 seconds. Alternatively, it canalso be reset using the remote ON/OFF control function.(c) Ripple, Ripple noizeIf the output current is less than 2% of the rated current, the outputvoltage ripple may become large.■In redundant operation mode, if the output current is less than 2%of the rated current, the PG output may become unstable.■Please shut off the input voltage when you replace a failed powersupply.■Hot-swap or Hot-plug is not available.■2 or more power supplies failures may cause the output voltage todecrease and the system to shut down. Immediate replacement isrecommended when a power supply has failed.■Please contact us for the detail of series, parallel and N+1 redundancyoperations.+VOUT+SVTRMCB-S-VOUT+VOUT+SVTRMCB-S-VOUTCo +Co +5 Cleaning!Clean the product with a brush. Prevent liquid from getting into theproduct.Do not soak the product into liquid.!Do not stick solvent to a name plate or a resin case.(If solvent sticks to a name plate or a resin case, it will causeto change the color of the case or to fade letters on name plateaway.)!After cleaning, dry them enough.Fig.4.2 Examples of parallel operation!Please refer to the application manuals for details of parallel operation.Application manual is on our web site.DCS-12