400-W power interface module helps simplify low-EMI design in ATCA applications

400-W power interface module helps simplify low-EMI design in ATCA applications

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By eeNews Europe

Ericsson’s low-EMI design rules and best practices ensure that minimal external filtering is needed to meet the CISPR Class B EMC standards required for Information and Communications Technology (ICT) applications. Ripple and noise are minimized, circuit design is simplified, and both parts count and system costs are reduced, without compromising performance.     

Based on Ericsson’s energy optimized platform, the PIM4328P operates over an input range of 36 V to 75 V and the main unit is able to sustain a permanent output current of 10 A without forced airflow up to +70 and up to +90°C with only 2.0 m/s (400LFM). Output power is 390 W at minimum 39 V input and up to 540 W when the input is minimum 54 V. This allows headroom when there is a need to upgrade boards with new processors or additional memory in systems operating in battery or non-battery back-up applications.     

With 99% typical efficiency at 300 W output, the PIM4328P maintains the high standards of dynamic and load step performance required in ATCA equipment while limiting power losses across the filtering unit to a low level.     

The 2250 Vdc isolated, dual power management, 12 W DC/DC output voltages are 3.3 V / 3.6 A and 5 V / 0.15 A. Other features of the PIM4328P include protection against input transients, reverse polarity, over-temperature, over-current, input under-voltage, and inrush current. The module complies with RoHS requirement, have integral hot swap functionality and hold-up charge and discharge management. The inputs include dual power feeds with OR’ing functionality and ‘enable’ signaling.  MTBF is 1.8 million hours (Telcordia SR-332 Issue 2, Method 1) and meets safety requirements according to IEC/EN/UL 60950-1.     

The new PIM is suitable for any industrial, telecommunications and data communications application employing distributed power architecture.     

Visit Ericsson Power Modules at

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