IR Introduces Compact 120W Six-Channel Class D Audio Reference Design with No Heatsink and 0.01% Total Harmonic Distortion.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 IRAUDAMP3 Class D audio reference design. The new, compact reference design features the IRS An abbreviation for the Internal Revenue Service, a federal agency charged with the responsibility of administering and enforcing internal revenue laws. 20124S high-voltage analog IC and IRF6645 DirectFET(r) power MOSFETs to complete a six-channel 120W half-bridge Class D audio power amplifier with no heatsink. "By optimizing our Class D audio high-voltage ICs with benchmark power MOSFETS, the IRAUDAMP3 delivers outstanding performance benefits and size advantage to our customers," said David Tam, vice president of International Rectifier's Energy-Saving Products Segment. The IRS20124S high-voltage IC incorporated in this reference design features an internal selectable dead-time generation circuit and is immune to noise and supply voltage fluctuations to help achieve a total harmonic distortion The total harmonic distortion, or THD, of a signal is a measurement of the harmonic distortion present and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental. (THD ThD abbr. Latin Theologiae Doctor (Doctor of Theology) Noun 1. ThD - a doctor's degree in theology Doctor of Theology ) of 0.01 percent at 60W, 4 ohm ohm (ōm) [for G. S. Ohm], unit of electrical resistance, defined as the resistance in a circuit in which a potential difference of one volt creates a current of one ampere; hence, 1 ohm equals 1 volt/ampere. and 94 percent efficiency at 120W, 4 ohm single channel. Additionally, the IC has built-in bi-directional current sensing and an integrated shutdown function to protect the output MOSFETs when an over-current condition occurs such as a short-circuited speaker wire. The IRAUDAMP3, which has a footprint of 4.5 square inches for each two channel control and switch function, also utilizes IRF6645 DirectFET power MOSFETs. The innovative DirectFET packaging technology enhances performance in Class D audio amplifier circuits by reducing lead inductance to improve switching performance and reduce EMI (ElectroMagnetic Interference) An electrical disturbance in a system due to natural phenomena, low-frequency waves from electromechanical devices or high-frequency waves (RFI) from chips and other electronic devices. Allowable limits are governed by the FCC. noise. The higher thermal efficiency enables 120W operation into 4 ohm, eliminating the need for a heatsink to shrink circuit size, provide greater layout flexibility and reduce overall amplifier system cost. A data sheet available on the International Rectifier Web site, www.irf.com. Patented DirectFET Packaging Technology International Rectifier's patented DirectFET 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 packages present a whole new set of design advantages not previously delivered by standard plastic discrete packages. Their metal can construction enables dual-side cooling that effectively doubles the current handling capacity of high-frequency DC-DC DC-DC Direct Current to Direct Current (power conversion) buck converters powering advanced microprocessors. In addition, devices in the DirectFET package are compliant with the Restriction of Hazardous Substances Directive The Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment 2002/95/EC[1] (commonly referred to as the Restriction of Hazardous Substances Directive or RoHS (RoHS). Availability and Pricing The IRAUDAMP3 reference design is available immediately; pricing is US $995 each. Pricing is 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. Patent and Trademark Notice IR's proprietary DirectFET technology is covered by US Patents 6624522, 6784540 and multiple other US and foreign pending patent applications. DirectFET(r) and IR(r) are registered trademarks of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders. |
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