Powerelectronics 1005 Ir 915 0

Digital controllers bring high efficiency to computing applications

Sept. 15, 2011
International Rectifier (IR) announces a new digital power platform that significantly improves energy efficiency in myriad applications, including high-performance server, desktop, and computing applications.

International Rectifier (IR) announces a new digital power platform that significantly improves energy efficiency in myriad applications, including high-performance server, desktop, and computing applications. The new family of digital controllers is based on CHiL’s digital platform, which offers full telemetry and programmability, allowing system designers to differentiate their products with custom features.

The family offers a fully compliant, high-speed serial bus to meet new industrial requirements. These 5, 6, and 8-phase dual output PWM controllers, in which phases are flexibly assigned between loops 1 and 2, can be easily configured for Intel VR12, AMD SVI/PVI/G34, and feature switching frequency between 200 kHz to 1.2 MHz per phase.

The family of digital controllers offers efficiency improvements with features such as variable gate drive and dynamic phase control for super-high efficiency and programmable 1-phase or 2-phases for light loads. When used in conjunction with IR’s PowIRstage devices, this product family offers a complete solution that reportedly delivers the highest efficiency possible for next-generation servers.

Other key features of the new digital controllers include adaptive transient algorithm (ATA) on both loops to minimize output bulk capacitors and system cost, auto-phase detection with auto-compensation, and per-loop protection features. In addition, the digital ICs offer I2C, SMBus, and PMBus system interface for full telemetry and programmability. Non-volatile memory for custom configuration, 3.3-V tri-state driver compatible, 3.3-V supply voltage, and 0º to 85º C ambient operation are also featured.

For more information, contact International Rectifier, 233 Kansas St., El Segundo, CA 90245. Phone: (310) 252-7105.

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