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PTH04T231W: Safe to parallel outputs of several modules?
This is a very old and large device, so let me see if we have a single DC/DC that meets your output current needs. What Vin, Vout, Iout, and features do you need?
Adding a diode on the output is a simple way to parallel almost any power supply, but the output voltage should be sensed before the diode to not include the diode in the control loop. This would then give load regulation.
(BTW my first name is Nicholas. Maris is my last name. :-) )
Yes I have used diode-ORing several times in the past. I understand that the sense for each reg must be prior to the diode and that there will be the Vf drop for the isolation diodes. However, we are using them in current designs and they are stable, so I do not want to design in something unknown, and in addition we have a large number on hand in stock so we would like to use them.
FWIW, our usage requires input voltage of 5V, output of 3.3V, and max output current of 12A. I would like to diode-OR two regs to provide the necessary 3.3V at 12A, although it will droop due to the diode Vfs at higher currents, but normal current is expected to be <<12A. Do you have a 12A (or better) reg that will provide that current?
