Digital PWM ICs for CPU VRM/VRD

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As microprocessors and ASICs have grown in power and complexity, their voltage regulation requirements have become increasingly demanding. This growing complexity has led to the introduction of Primarion™ digital power management (DPM) solutions with increased accuracy, real-time monitoring and control capabilities via digital communications bus. The simplified system design that the DPM solution provides leads to lower cost and higher performance implementations.


Primarion’s core power ICs are designed into voltage regulator modules (VRMs) and motherboards for leading server original equipment manufacturers (OEMs) and are currently shipping into major server OEM systems to power Intel, AMD & graphics processors. Primarion’s third-generation digital power system-level solutions, which are sampling now, enable improved digital control features: better accuracy and use of lower cost passive components through adaptive digital calibration, improved ability to respond to fast changes in power requirements (transients) using fewer external capacitors with proprietary active transient response, and easier design-in with a graphical user interface. Primarion's overall solution requires substantially fewer components and associated costs as compared to current analog power solutions.


The Primarion™ VRM/VRD advantage
  • Lowest cost
  • Flexibility - Primarion™ is the only DPM solution that can use either discrete power train components or an integrated power stage 
  • Power density - Primarion’s chipset enables densitiems of 40 amps per square inch 
  • Programmability - Internal non-volatile memory (NVM) and an I2C interface 
  • Enhanced system performance - digitally monitor operating currents, voltages, temperatures and other parameters to increase system performance and reliability 
  • Advanced software tools - comprehensive programmability of Primarion™ DPM chipsets, accompanied by advanced software tools, allows key parameters (control-loop response, loadline, and switching frequency) to be optimized at the click of a mouse button 
  • Dual sourced - seamless dual sourcing with industry leader

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Title Size Date Version
579 KB 01 Jul 2015 01_00

Additional Technical Information

Title Size Date Version
883 KB 13 Nov 2007 02_05

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