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  DC-DC Converters  are used in parallel The parallel of DC-DC Converter has two aspects, one is to increase the output power, when two or more DC-DC power modules in parallel, requires the good current-sharing function between the DC-DC power module is good, the current-sharing mode cannot achieve only by parallel output terminal or uniform output voltage. Because DC-DC power module output impedance, temperature drift are different, will make the load unbalanced. This parallel operation requires this function of DC-DC power modules to achieve , such as our  YPD600 series products . The second is to increase the reliability of the power supply system, which we call redundant heat backup, as shown in Figure (Figure 9).The requirement of such parallel is that each  DC-DC power module  can separately provide 100% load current, so there is no requirement of current-sharing in parallel use, both provide current and are heat backup to each other. With a diode separati...

  1，DC-DC Power Module Thermal Design The DC-DC Power Module heat dissipation is mainly through natural convection, forced air cooling, heat-sink installation methods or several combinations of them. For  DC-DC Converters with  small power below 40W , the natural heat dissipation is mainly considered in the design. In use the installation environment is mainly considered. To make it have the convection space, there is a certain power derating, and detect the case temperature at the actual maximum ambient temperature. For  DC-DC Converters above 40W  or with radiator mounting holes, forced air cooling or radiator installation must be considered. The basic method is to calculate the dissipated power  Pd=Pout / -Pout  of DC-DC Power Module through efficiency η  , calculate the case temperature θ c-a=(Tc-Ta)/Pd  through the maximum shell temperature  T c  and the required working environment temperature  Ta , and select the appropr...

  DC-DC Converters  are used in parallel The parallel of DC-DC Converter has two aspects, one is to increase the output power, when two or more DC-DC power modules in parallel, requires the good current-sharing function between the DC-DC power module is good, the current-sharing mode cannot achieve only by parallel output terminal or uniform output voltage. Because DC-DC power module output impedance, temperature drift are different, will make the load unbalanced. This parallel operation requires this function of DC-DC power modules to achieve , such as our  YPD600 series products . The second is to increase the reliability of the power supply system, which we call redundant heat backup, as shown in Figure (Figure 9).The requirement of such parallel is that each  DC-DC power module  can separately provide 100% load current, so there is no requirement of current-sharing in parallel use, both provide current and are heat backup to each other. With a diode separati...