2010-08-20

Ericsson’s floated inserted pin simplifies the utilization of high-power surface mount modules

•Manufacturing process highly simplified and more efficient
•Floated inserted pins increase reliability and performance
•High power surface mount DC/DC converters contribute to improve board's utilization, to simplify inventory management and reduce energy consumption

Ericsson Power Modules’ has introduced a surface mount version of its 380W PKM4000B module with an input voltage of 36 to 75V and an output of 12V/33A. The PKM4000B SI addresses the increasing need for surface mount versions to meet the ever-increasing space saving requirements demanded by applications and designers.

Prime customers are those using information and telecommunication technologies such as datacenters, routers, and telecom equipment, but also a large range of customers who need to power their application from a 48V line and require a high-efficiency, intermediate bus voltage of 12V. Specifically, those requiring high-density boards – ones requiring surface mount components only.

Simplifying the manufacturing process by using only surface mount components reduces the number of manufacturing steps, shortening manufacturing cycles, and by removing second pass soldering for through-hole components, reduce cost.

Ericsson Power Modules’ FIP concept is based on very accurately tooled pins that are inserted and aligned during the original assembly process. When a PKM4000B SI module is assembled on the final board, during lead-free soldering reflow, the pins remain aligned in the plated through-hole of the PKM4000B SI and self-adjust to guarantee excellent interconnection between the two solder pads. This ensures high reliability and host equipment availability.

The module includes operational protection for over temperature protection (OTP), output over voltage protection (OVP), and output short-circuit protection. Additionally, optional latching OTP and OVP are available on request. With a maximum height of 11.2mm, the PKM4000B SI is compatible with reduce board-space applications or cold-wall equipments requiring low height. According to Telcordia SR332, and calculated at full power and an operating at +40 degrees C, the PKM4000B SI has an excellent MTBF of 1.1 million hours.

To reduce conducted and switching losses, the PKM4000B is built on a high copper density PCB using low resistive MOSFETs and its use of large contact area proprietary FIP technology reduces interconnection losses when the module is connected to end-users’ boards. Based on millions of products shipped to market, and the market success encountered by Ericsson’s surface mountable PKU sixteenth brick and PKB eighth-brick, this technology is fully optimized for high-power surface mount modules.

Your Contact:

Wiho Herkenhoff 
Phone: +49 (0) 5424 2340-30
Email: wherkenhoff@mev-elektronik.com