Freescale Semiconductor Offers 4mOhm Power Switch With Fast Pulse Width Modulation; MC33981 Maximizes Motor Control Performance and Efficiency in Automotive Applications.DETROIT -- Freescale Semiconductor (NYSE NYSE See: New York Stock Exchange :FSL FSL - Formal Semantics Language. A language for compiler writing. ["A Formal Semantics for Computer Languages and its Application in a Compiler-Compiler", J.A. Feldman, CACM 9(1) (Jan 1966)]. [Sammet 1969, p. 641]. ) is adding another level of integration to power ICs to help automotive designers bring efficient, solid-state motor control to cooling fans, fuel pumps and other automotive applications. The 4 milliohm MC33981 eXtreme Switch with fast 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 ) is designed to replace electromechanical The use of electricity to run moving parts. Disk drives, printers and motors are examples. Electromechanical systems must be designed for the eventual deterioration of moving components that wear over time. The first TVs were electromechanical systems (see video/TV history). relays and discrete devices while reducing board space and increasing system reliability in numerous embedded systems. When digitally controlled by a microcontroller, the MC33981 can drive a DC motor with PWM frequencies up to 60kHz. Using PWM for motor speed control can eliminate the need for the power resistors, relays and heat sink, drastically reducing the size and weight of the power module. In addition, the fast PWM allows for variable speed and torque control, enabling system designers to maximize motor performance and efficiency. The device also features slew rate control that helps minimize power dissipation while meeting strict EMC (1) (EMC Corporation, Hopkinton, MA, www.emc.com) The leading supplier of storage products for midrange computers and mainframes. Founded in 1979 by Richard J. Egan and Roger Marino, EMC has developed advanced storage and retrieval technologies for the world's largest companies. (electromagnetic compatibility) requirements. "The combination of configurability, protection and diagnostic capabilities of the MC33981 helps ensure this power switch will outperform mechanical or existing solid state relays," said Demetre Kondylis, general manager of Freescale's Analog Products Division. "This device offers the efficiency and reliability customers have come to expect from Freescale." MC33981 Features Manufactured with the company's proprietary SMARTMOS(TM) and HDTMOS processes, the MC33981 device combines high-density, high-speed logic with precision analog and high-voltage, high-current power circuitry. This allows appealing features such as low-side synchronous gate drive for freewheeling diode replacement, analog temperature feedback and remote diagnostics. Other features include: --Very low standby current --Slew rate control with external capacitor --Overcurrent and overtemperature protection, under voltage shutdown and fault reporting --Reverse battery protection --Gate drive signal for external low-side N-channel 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 with protection features --Output current monitoring --Temperature feedback pin --12x12mm power quad flat pack no-lead (PQFN PQFN Power Quad Flat Pack No-Lead ) package For technical documentation and a full list of product features, go to www.freescale.com/analog. Price and Availability The MC33981 high-side power switch is currently sampling in limited quantities, with production quantities expected in the second quarter of 2005. Unit pricing starts at a suggested list price of $2.95 (USD USD In currencies, this is the abbreviation for the U.S. Dollar. Notes: The currency market, also known as the Foreign Exchange market, is the largest financial market in the world, with a daily average volume of over US $1 trillion. ) for 10,000-piece quantities. Freescale also offers a reference design, application notes and an evaluation kit (# KIT33981PNAEVB). About Freescale Semiconductor Freescale Semiconductor, Inc. (NYSE:FSL) is a global leader in the design and manufacture of embedded semiconductors for the automotive, consumer, industrial, networking and wireless markets. Freescale became a publicly traded company publicly traded company A company whose shares of common stock are held by the public and are available for purchase by investors. The shares of publicly traded firms are bought and sold on the organized exchanges or in the over-the-counter market. in July 2004 after more than 50 years as part of Motorola, Inc. (NYSE:MOT). The company is based in Austin, Texas, and has design, research and development, manufacturing or sales operations in more than 30 countries. Freescale Semiconductor's 2003 sales were $4.9 billion (US). For more information: www.freescale.com. Freescale Reader Inquiry Response: Freescale Semiconductor P.O. Box 17927 Denver, CO 80217 USA Freescale(TM) and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. (C) Freescale Semiconductor Inc. 2004 |
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