International Rectifier Introduces Three Phase PWM Controller with DirectFET MOSFET Pair to Enable Up to 40% Size Reduction.EL SEGUNDO El Segundo (ĕl sēgŭn`dō), industrial city (1990 pop. 15,223), Los Angeles co., S Calif., on Santa Monica Bay; inc. 1917. Its products include navigation and computer systems, aircraft parts, office machines, telephone apparatus, and , Calif. -- International Rectifier International Rectifier Corp. (NYSE: IRF) is a manufacturer of power semiconductors (MOSFET, IGBT, diodes and thyristors), located in El Segundo, California, USA. It has a market capitalization of 2.48 billion USD and is listed on the S&P Midcap 400. , 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 announced a three-phase 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 with integrated drivers for DC-DC DC-DC Direct Current to Direct Current (power conversion) converters. The IR3094MPbF enables up to 40% circuit size reduction when used with International Rectifier DirectFET(tm) MOSFETs. The smaller footprint makes the IR3094 ideal for space-constrained applications like DDR (Double Data Rate) Refers to an SDRAM memory chip that increases performance by doubling the effective data rate of the frontside bus. For more details, see SDRAM. DDR - Double Data Rate Random Access Memory memory in rack servers A server housed in a horizontal case 1.75" high that mounts in a rack. A large datacenter may have thousands of rack servers, which if housed in tower cases would take up five times as much space. See rack mounted. and point-of-load (POL) modules used in high-density data systems. A typical 80A, three-phase synchronous buck solution would require as many as 13 devices including one control and three drivers in addition to three MOSFETs per phase. A chip set made with the IR3094 plus IRF6637 and IRF6678 DirectFET MOSFETs reduces the silicon component count to seven devices for the same output current. Three pairs of these DirectFET MOSFETs can be placed directly next to the IR3094, creating a solution that minimizes printed circuit board trace parasitics and enables optimum switching performance. "The IR3094 enables 80A POL regulators that take up less than two square inches of board space. This is critical as OEMs continue to push for increased density and functionality in next generation servers," said Faisal Ahmad, marketing manager for DC-DC Computing Products at International Rectifier. The IR3094 is designed for applications requiring a 0.85V to 5.1V output. The new IC is housed in a compact 7mm x 7mm MLPQ package, and features 3A gate drive capability, a 1% accurate reference voltage, adaptive voltage positioning and programmable switching frequency up to 540kHz. The IR3094 provides system protection with programmable soft start, hiccup hiccup or hiccough, involuntary spasmodic contraction of the diaphragm followed by a sharp intake of air, which is abruptly stopped by a sudden, involuntary closing of the glottis (opening between the vocal cords); the consequent blocking of air over-current protection, over-voltage protection, and a "power good" indicator. The IRF6678, an ideal synchronous 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 , features a very low typical device on-resistance of 1.7mOhm at 10V and 2.3mOhm at 4.5V. The IRF6637 is best suited as a control MOSFET, with very low Miller charge of only 4nC and typical device on-resistance of 5.7mOhm at 10V and 8.2mOhm at 4.5V. Both MOSFETs are housed in the medium can DirectFET package, occupying the same board area as a SO-8 with only a 0.7mm profile, and improved thermal performance through double-sided cooling. "The integrated high current gate drivers in the IR3094 combined with the optimized DirectFET pair creates a power management solution that delivers unparalleled integration and density for high-current point of load converters," Ahmad added. More information is posted on the International Rectifier Web site: http://www.irf.com/whats-new/nr051130.html. Availability and Pricing The new IR3094MPbF PWM controller IC and the companion DirectFET MOSFETs are available immediately. Pricing is US $2.34 each for the IR3094, while the IRF6678 is US $1.25 each and the IRF6637 is US $0.91 each. All pricing is in 10,000-unit quantities, and is subject to change. The IR3094 and the DirectFET MOSFETs are RoHS compliant. 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(tm) technology is covered by US Patents 6624522, 6784540 and multiple other US and foreign pending patent applications. DirectFET is a trademark of International Rectifier Corporation. IR(r) and HEXFET HEXFET Hexagonal Field Effect Transistor (r) are registered trademarks of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders. |
|
||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion