New I 2C- and PMBus-compliant Power Interface Modules optimized for AdvancedTCA Blade and embedded computing systems. Integrated input-current monitoring negates need for additional components. PIM delivers output power up to 648W. Optimized for high efficiency – typically 98.7% at 10A output load.
New Ericsson power interface modules simplify energy monitoring

Ericsson has announced an extension of its 3E digital power module family with two new digital-communication-bus-enabled 540-648W low-profile quarter-brick Power Interface Modules PIMs. Compliant with the 300W de facto industry-standard footprint and offering both I2C- and PMBus-based serial bus communications, the PIM4328PD and PIM4328PDA modules simplify board power monitoring and operational functionality without the need for additional external components, thereby shortening time-to-market and reducing development costs.

Based on the company’s high-efficiency PIM4328P analog platform, the addition of bus communication to the modules increases the level of flexibility offered by digital monitoring, including voltage/current input parameters, making it possible for systems architects to evaluate the power consumption at board level – an important parameter to accurately monitor efficiency and also aid system compliance with energy efficiency legislation, where necessary.

"The addition of the PMBus digital interface to a PIM module is a major step forward simplifying energy management and system monitoring," said Patrick Le Fèvre, Marketing and Communication Director, Ericsson Power Modules. "Combined with the 3E Advanced Bus Converters and digital Point-of-Load DC-DC regulators, Ericsson is delivering the most advanced digital power portfolio to help systems architects reduce energy consumption."

Via the PMBus interface, the module can monitor various different parameters and status/fault flags, in addition to continuously monitoring: Feed A voltage, Feed B voltage, output current, hold-up voltage, internal junction temperature, and status/fault flags such as feed under voltage, Output 1 under voltage and hot swap off. Via the I2C interface the PIM4328PDA can monitor six status bits and five analog measurements including hold-up capacitor voltage, Output 1 current, Feed A input voltage, Feed B input voltage and module temperature.

Offering 99% typical efficiency at 300W output, the PIM4328PD and PIM4328PDA maintain the high standards of the dynamic and load step performance required in ATCA equipment, while limiting power losses across the filtering unit to a very low level.

* Enhanced Performance, Energy Management, and End-user Value are the key benefits delivered by Ericsson’s range of 3E digitally controlled DC/DC converters.