International Rectifier's Compact, Robust High-Voltage ICs Simplify HID Ballast Circuits and Extend Lamp Life.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 introduced the IRS An abbreviation for the Internal Revenue Service, a federal agency charged with the responsibility of administering and enforcing internal revenue laws. 2453D family of integrated 600V self-oscillating full-bridge driver ICs for HID ballast applications including general lighting, outdoor street lighting and projectors. The new ICs utilize IR's proprietary high-voltage integrated circuit (HVIC HVIC High-Voltage Integrated Circuit ) technology, integrating two high-side and two low-side gate drivers. This process allows improvements in device capabilities, tighter specifications, temperature stability and the integration of previously unavailable features. The IRS2453D features a simple RC network to program the 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 , eliminating the need to synchronize two half-bridge drivers. In contrast, solutions using 2 SO-8 driver ICs require a separate oscillator to drive each half-bridge, resulting in unsymmetrical voltages across the load due to mismatching of the on-time states caused by tolerances and temperature. In lighting applications, this can cause mercury migration shortening lamp life. The IRS2453D overcomes this problem by driving both half-bridge drivers with a single oscillator to guarantee accurate matching over the complete temperature and supply voltage range. Greatly simplifying overall design, the IRS2453D integrates both a latched and non-latched shutdown input, and eliminates up to seven components. The latched shutdown allows for implementation of various protection features such as cycle-by-cycle over-current, open-load or short-circuit detection without additional components, while the non-latched shutdown allows for easy interface to a microcontroller for use in a wider variety of power management applications. Available in 14-lead DIP and SO packages, the lead-free devices provides 50% duty cycle, fixed one micro-second (typical) internal deadtime and integrated bootstrap See boot. (operating system, compiler) bootstrap - To load and initialise the operating system on a computer. Normally abbreviated to "boot". From the curious expression "to pull oneself up by one's bootstraps", one of the legendary feats of Baron von Munchhausen. circuitry. While the new ICs are designed to drive the required low-frequency AC voltage in HID lamps, they can also be used as a general-purpose block for other high-frequency applications such as fluorescent ballasts and power supplies. "The IRS2453D for HID ballasts is one more innovation in our family of industry-leading HVICs that reduce part count to shrink form factor, increase reliability and simplify circuit design," said Tom Ribarich, IR's Lighting IC Design Center director. Other key specifications for the IRS2453D include 15.6V Zener diode clamp on Vcc and typical micropower startup current of 140 micro-amps. Noise immunity is achieved by low di/dt peak of the gate drivers and with an under-voltage lockout lockout, intentional closing up of a company, factory, or shop by an employer to prevent employees from working during a strike or labor dispute. The term lockout hysteresis hysteresis (hĭs'tərē`sĭs), phenomenon in which the response of a physical system to an external influence depends not only on the present magnitude of that influence but also on the previous history of the system. of greater than 1.5 V. Data sheets for the devices are available on the website at http://www.irf.com. Availability and Pricing The IRS2453DPbF, IRS2453DSPbF and IRS2453DSTRPbF are available immediately. Pricing in 10,000-unit quantities begins at US $1.50 each for IRS2453DPbF and IRS2453DSPbF, and US $1.55 each for IRS2453DSTRPbF. Prices are subject to change. The devices 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. Trademark Notice IR(r) is a registered trademark of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders. |
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