Flex Power Modules has grown its PKU-D series of low-profile sixteenth-brick DC-DC converters with the PKU3913D, a 100W rated part with extended input range down to 30V and regulated output of 12V/8.3A. Intended application is nominal inputs of 48V or 54V with possible long cable lengths and consequent voltage drops such as microwave radio links. The low input drop-out voltage guarantees extended operation, while the input range is compatible with PoE standard IEEE 802.3af (37-57 VDC).
The PKU3913D is designed for high efficiency at lower input voltages, peaking at over 95 per cent. The parts feature: pre-bias; monotonic start-up capability; remote on/off; and an MTBF of 13.88M hours at 40°C ambient according to Telcordia standards. Products are certified to IEC/EN/UL 62368-1 for 2250 VDC input to output isolation. Protection is included against over-temperature, input undervoltage, output overvoltage, over-current and short circuits.
The series is housed in a 33.02 by 22.86mm footprint and is just 11.3mm high in the open-frame formats, with optional through-hole or SMT termination, or 12.7mm high for the pinned version with optional base plate. Size and pin-out is industry-standard.