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IR s XPhase Control IC Provides High Density, Scalable Power Solution for POL Converters

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^{Published in Science and Technology on Thursday, December 11th 2008 at 9:32 GMT, Last Modified on 2009-11-02 16:26:48 by Market Wire}  

EL SEGUNDO, Calif.--([ BUSINESS WIRE ])--International Rectifier, IR® (NYSE:IRF), a world leader in power management technology, today introduced the XPhase® IR3513 control IC for point-of-load (POL) converter designs.

TheIR3513 provides overall control of a scalable number of phases along with an internal gate driver, current sense and sharing, and PWM to provide a stand-alone single-phase regulator or interface with additional phase ICs enabling a power solution with any number of phases. With this arrangement, the final solution requires only a single IC per phase to deploy one to X phases. Alternative approaches require a control IC plus 1 to X driver ICs or scalable "all-in-one" ICs that do not utilize all IC pins or circuitry leading to increased solution cost and size.

"The new IR3513 XPhase control IC, when co-designed with the IR3505 and IR3507 phase ICs, enables a power supply that is smaller and easier to design while providing higher efficiency and a lower overall system cost than alternative approaches, delivering a full-featured and flexible way to implement a complete power solution," said George Schuellein, marketing director, IR's Multiphase product line.

The new device features 0.8V to 5.1V output voltage with 0.5 percent system set point accuracy and programmable 250 kHz to 9 MHz daisy-chain digital phase timing to provide a per phase switching frequency of 250 kHz to 1.5 MHz with no external components. A host of protection features include over-voltage protection, detection and protection of open remote sense lines and open control loop protection.

About XPhase®

XPhase is IR's distributed multiphase architecture that consists of control ICs and phase ICs that communicate using a simple six-wire bus scheme. Phases can be added or removed without changing the fundamental design. The six-wire bus consists of a three-wire digital phase timing bus, an average current, an error amplifier output and a VID voltage. By eliminating point-to-point wiring between the control and the phase ICs, the six-wire bus shortens interconnections, and reduces parasitic inductance and noise. This simplifies PCB layout and provides a more robust design.

More information is available at the International Rectifier website at [ http://www.irf.com/whats-new/nr081211.html ].

Availability and Pricing

Pricing for the IR3513MTRPbF begins at US $2.25 in 10,000-unit quantities. Production orders are available immediately. The devices are RoHS compliant and prices are subject to change.

About International Rectifier

International Rectifier (NYSE:IRF) is a world leader in power management technology. IR's analog and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and reduce energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR's power management benchmarks to power their next generation products. For more information, go to [ www.irf.com ].

Trademark Notice

XPhase® and IR® are trademarks of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.