New ICs from STMicroelectronics Deliver Highest Power-Conversion Efficiency for Next-Gen 48V Datacenter Architecture Presented by Google

  • Innovative, scalable, isolated power conversion architecture of new 48V power architecture reduces power loss, space needs, and cooling costs
  • Family of three ICs is in production and shipping now, in volume

GENEVA, March 10, 2016 (GLOBE NEWSWIRE) -- STMicroelectronics (NYSE: STM), a global semiconductor leader serving customers across the spectrum of electronics applications, today announced a new family of power-conversion ICs dedicated to  48V power architectures. These three new products are shipping in volume.

To meet ever-growing performance demands, servers and processors have ratcheted up their compute power-and power consumption-with multicore chips. This next-generation power architecture aims to significantly cut wasted power inside datacenter servers and it also meets the requirements of the new 48V architecture announced by Google.

ST has implemented direct digital power conversion from 48V by developing a family of ICs to support the complete range of datacenter power-conversion applications. The direct digital power conversion eliminates intermediate conversion stages to minimize power loss in datacenters from power distribution and reduce space, cooling requirements, and cost. The ICs are fully compliant with Intel's VR12.5 (Haswell and Broadwell), VR13 (Skylake) and DDR3/4 voltage-regulation specifications, and all FPGAs and ASICs for datacenter applications. The three new chips, together with ST's low-voltage StripFETTM power-MOSFET family, assure robust and highly-efficient system operation at input voltages from 36 to 72V, with output voltages between 0.5 and 12V. These specifications confirm best-in-class power efficiency of >97% at 12V/500W and high system bandwidth using minimal PCB space.

"This 48V architecture is ideal for ultra-high-efficiency datacenters in significantly reducing the total cost of ownership," said Matteo LoPresti, Group VP and General Manager Analog, STMicroelectronics. "ST is already in volume production and supporting this next-generation application with our unique isolated resonant-power converters, demonstrating that this solution offers industry-leading power efficiency, along with outstanding scalability, and flexibility."

The three ICs are available now and ST offers a demo board to showcase the advantages of the 48V architecture and its three-chip solution. For more information, please contact your local STMicroelectronics sales representative.

Technical Notes for Editors:
ST's Isolated Resonant Direct Conversion technology ensures great flexibility in all the possible applications. In particular:

  • STRG02 is a secondary-side controller that features predictive Zero-Voltage Switching and Zero-Current Switching control and while permitting power to be sunk during falling adaptive voltage scaling.
  • STRG04 is a 60V full bridge that provides driver capability to a wide range of external MOS- (Metal Oxide Semiconductor) or Gallium-Nitride-based switches at high frequency. The chip supports a wide input-voltage range to substantially simplify the power-delivery chain, including allowing direct connection of the battery backup, which enables higher system availability.
  • STRG06 is a scalable digital power controller that for the 48V datacenter server architecture to manage up to six converters in parallel, supporting output power from 50W to more than 300W. The STRG06 also implements Energy Proportional control, adaptive interleaving, current sharing and a complete set of the extensive PMBUS(TM) commands for fault management, primary- and secondary-side telemetry data, and safety system for traceability and analysis, to operate as a datacenter black-box recorder.

About STMicroelectronics
ST is a global semiconductor leader delivering intelligent and energy-efficient products and solutions that power the electronics at the heart of everyday life. ST's products are found everywhere today, and together with our customers, we are enabling smarter driving and smarter factories, cities and homes, along with the next generation of mobile and Internet of Things devices.

By getting more from technology to get more from life, ST stands for life.augmented.

In 2015, the Company's net revenues were $6.90 billion, serving more than 100,000 customers worldwide. Further information can be found at

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