In summary, Delta has three series of isolated DC/DC converters which cover input voltage range of 36~75, 18~38 and 18~75V respectively. Delta’s DC/DC converters have different input voltage transient protection functions, please check datasheet for each model. To prevent system instability, a de-coupling cap with low ESR able to handle the reflect input ripple current is needed on the input side of the DC module. Delta’s isolated DC/DC converters have trim-up and trim-down functions, the output voltage can be adjusted by external resistors. Also, the converters have remote sensing function to compensate the voltage drop by the trace impedance. Finally, each isolated DC/DC converter has its maximum output capacitance specification, the maximum capacitance used in customer system shall not exceed this value.