Power Electronics
Robust Power Modules Have Ultra-Wide Input Voltage Range

Robust Power Modules Have Ultra-Wide Input Voltage Range

Ericsson has introduced two series of DC/DC converter modules that are primarily aimed at industrial and railway transportation applications, as well as information and communications technology (ICT) applications that are operated with remote power supplies and/or multiple battery voltages. Ideally suited to use in distributed power architectures and industrial control systems, these new highly robust modules target typically 12V, 24V or 48V power supply line applications that require a board power supply to operate across a large range of input voltages, and without disrupting output characteristics when the input line is experiencing very high fluctuation.

The PKE3000PI operates over an input voltage range from 9 V to 36 V and the PKE5000PI operates from 18 V to 75 V. Each series offers four output voltages, delivering 3.3 V/4.5 A; 5 V/ 3A; 12 V/1.25 A and 15 V/1 A. Offering a high efficiency of typically 89% at 12V out (full load), the modules offer low power dissipation and excellent thermal characteristics.

The modules are small and compact, measuring industry-standard dimensions 25.4 x 25.4 x 10.8 mm (1.00 x 1.00 x 0.4 in), and come in highly robust encapsulated packaging, protecting the modules from dust, high humidity and highly corrosive or highly vibrational environments, which are commonly found in industrial or railway/transportation applications.

In addition, the modules meet requirements for board development purposes or remote-feed applications where voltages are delivered to the load via long cables. In this case, the board power converter is required to secure stable input voltage whatever the length of cable and wherever the board is connected.

Meeting basic insulation and safety requirements according to IEC/UL60950-1, and offering 1500V I/O isolation and an MTBF (Mean-Time-Before-Failure) of one million hours, other features of the PKE3000PI and PKE5000PI series include: output over-voltage protection; input under-voltage shutdown; over temperature protection; output short-circuit protection; output voltage adjust function; monotonic startup; and remote control.

The PKE3000PI and PKE5000PI DC/DC converters are available starting at $16.80 in OEM volumes.


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