International Rectifier Introduces 80A Programmable Two-Phase PWM Control IC for Three Microprocessor Families.EL SEGUNDO, Calif. -- International Rectifier, IR(r) (NYSE NYSE See: New York Stock Exchange :IRF IRF Interferon Regulatory Factor IRF International Religious Freedom IRF Institut for Rationel Farmakoterapi (German) IRF Inherited Rights Filter (Novell) IRF Inherited Rights Filter ), a world leader in power management technology, today introduced the IR3092, an 80A, two-phase interleaved pulse width modulation See PWM. (PWM (Pulse Width Modulation) A modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. Like its fixed-width pulse density modulation (PDM) cousin, the output switching transistor is on more of the time for a ) control IC to support the AMD (Advanced Micro Devices, Inc., Sunnyvale, CA, www.amd.com) A major manufacturer of semiconductor devices including x86-compatible CPUs, embedded processors, flash memories, programmable logic devices and networking chips. Athlon(tm), AMD Athlon64(tm), AMD Opteron(tm), and Intel(r) VR10.X processors. Applications include server and desktop computer motherboards, voltage regulator modules (VRM (Voltage Regulator Module) See voltage regulator. ), video graphics cards and telecom single in-line package See SIP. (SIP) modules. The IR3092 is ideal for space-constrained systems with high load current and efficiency requirements. Compared to competitive devices that require external gate drive circuits, the IR3092 includes integrated MOSFET (Metal Oxide Semiconductor Field Effect Transistor) The most popular and widely used type of field effect transistor (see FET). MOSFETs are either NMOS (n-channel) or PMOS (p-channel) transistors, which are fabricated as individually packaged drivers with 3.5A drive capability. Existing two-phase solutions that are implemented with three ICs can now be replaced with a single IR3092 improving system reliability, reducing board area and simplifying circuit design. A patent-pending body braking circuit reduces the output capacitance requirement by up to 25% further reducing system costs. "The IR3092 meets the challenge of powering Intel's advanced Prescott microprocessors by providing up to 80A with a two-phase integrated power architecture," said Ralph Monteiro, Marketing Manager for DC-DC DC-DC Direct Current to Direct Current (power conversion) Computing Products. "Combined with IR's DirectFET(tm) technology HEXFET HEXFET Hexagonal Field Effect Transistor (r) MOSFETs, circuit designers can realize a highly efficient, space saving solution with the IR3092," Monteiro continued. The IR3092 operates from a single 12V supply and includes a linear regulator to power the gate drivers. The regulator output voltage can be programmed to minimize switching losses and optimize efficiency. A programmable oscillator oscillator Mechanical or electronic device that produces a back-and-forth periodic motion. A pendulum is a simple mechanical oscillator that swings with a constant amplitude, requiring the addition of energy at each swing only to compensate for the energy lost because of air , with a frequency range of 100kHz to 540kHz, gives the designer additional flexibility to improve system efficiency and transient response. For system protection and reliability, the IR3092 features programmable soft-start and hiccup over-current protection. Current sensing is achieved with loss-less inductor current sensing which gives improved accuracy compared to sensing circuits measuring MOSFET on-resistance. Dual under-voltage lockout circuits and over-voltage protection ensure reliability of system voltages. A power-good output signal indicates proper operation. To meet the stringent power requirements of today's microprocessors, the output voltage can be programmed with either a five or six-bit voltage identification (VID) code with 0.5% set-point accuracy. An adaptive voltage-positioning feature maintains the output voltage tolerance while minimizing output capacitor requirements. The IC is also capable of 100% duty cycle operation to further improve transient response. In addition, the IR3092 features programmable slew rate response to "on-the-fly" VID code changes. A data sheet is posted on the International Rectifier Web site: http://www.irf.com/product-info/datasheets/data/ir3092.pdf Availability and Pricing The IR3092M PWM IC is available immediately in the MLPQ-48, 7x7 package. Pricing for the new IC is US $2.50 each in 10,000-piece quantities. 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. Patent and Trademark Notice IR's proprietary DirectFET technology is covered by US Patent 6,624,522 and other US and foreign pending patent applications. DirectFET(tm), IR(r) and HEXFET(r) are trademarks or registered trademarks of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders. |
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