IR’s New Family of Digital Power Controllers Delivers Highest Efficiency Solution for Next-Generation Server, Desktop and Computing Applications

EL SEGUNDO, Calif. — International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today introduced a new digital power platform that dramatically improves energy efficiency in a wide variety of applications, including high performance server, desktop and computing applications.

The new family of digital controllers is based on CHiL’s proven digital platform offering full telemetry and programmability giving system designers a chance to differentiate their products with custom features. The family provides 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.

“With millions of controllers already shipped, IR’s digital solution is field proven, delivering the highest efficiency into the latest computing platforms. As a market leader in enterprise power, and a driving force in the adoption of digital control into the data center, communications, computing and graphics markets, we are pleased with the significant ramp in production we are currently experiencing,” said Tim Phillips, Vice President and General Manager, IR’s Enterprise Power Business Unit. “

The family of digital controllers offers efficiency improvements with features such as variable gate drive and dynamic phase control for best-in-class efficiency and programmable 1-phase or 2-phases for light loads. When used in conjunction with IR’s PowIRstage® devices this family offers an optimized end-to-end solution delivering highest efficiency 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 that enables customers to differentiate their platforms in the market. Non-volatile memory for custom configuration, 3.3V tri-state driver compatible, +3.3V supply voltage and 0ºC to 85ºC ambient operation are also featured.


Digital Control ICs
Part Number Package Control Loops Phases
IR3541 QFN 6 x 6 Dual Loop 4+1
IR3536 QFN 7 x 7 Dual Loop 5+1
IR3538 QFN 8 x 8 Dual Loop 7+1

Design Tools

All CHiL digital power solutions are fully supported by IR’s Digital Power Design Center (DPDC) GUI at which facilitates design, development and deployment of the company’s digital solutions. Additionally, hardware support using IR’s proprietary SVID emulator system enables customers to emulate and monitor either Intel or AMD serial interface protocols, as well as high speed I2C communication.

Price and Availability

Pricing ranges from US $2.00 each for the IR3541 to US $3.25 each for the IR3538 in 1,000 unit-quantities. Production orders are available immediately. Prices are subject to change.