Ericsson Releases New Quarter Brick DC-DC Modules
Ericsson Power Modules has introduced three additional models of its PKM-E series of dc-dc modules that provide extra output voltage ranges, more current, and more power for telecom and data equipment vendors operating in the areas of distributed power architecture, wireless networks, enterprise networks, access and optical networks, industrial, and the latest generation of ICs (DSP, FPGA, ASIC).
The new models are the PKM4515ZE PI 48Vin/24V/2.1A 50Wout, the PKM4619E PI 48Vin/2.5V/25A 62.5Wout, and the PKM4810E PI 48Vin/ 3.3V/25A 82.5Wout. The PKM4515ZE PI is specially designed to power fans, blowers and fan-trays i.e. rack-mounted trays containing multiple fans that are inserted into rack based electronic systems. In this application, the module contributes to efficient cooling, reducing heat build up in electronic systems.
Reducing energy consumption, the PKM-E family features high efficiency – typically 92% at 3.3Vout half load – and operate over an input voltage range of 36 to 75Vdc. They feature remote on/off, output voltage adjustment, remote sense, current protection, overvoltage protection, and overtemperature protection. They utilize a single side components mounting design, again contributing to a cost effective solution. The family is Ericsson’s latest, non-baseplated, quarter-brick platform. It allows the user to simply replace an existing quarter-brick part with a high reliability PKM-E that is approximately 25% lower cost, and complies with upcoming legislation affecting Restriction of Hazardous Substances. With a height of only 8.5mm (0.33"), it is suitable for low profile applications. The modules offer a reliability figure of 1.5MHrs MTBF at 40°C, and are fully RoHS compliant.
