MOSFET Driver features up to 200 V bridge supply voltage.

Press Release Summary:




Suited for use in Class-D audio amplifiers, Model MD7120 provides 12-200 V output, ±5 nanosec dead time matching, and rise or fall time of less than 30 nsec with typical 1 nF load. Unit can be connected directly to 200 V supply voltage to drive over 100 W output with 90% efficiency. Its internal core consists of control logic, level translators, bootstrap-powered high side gate driver, and over-temperature, under-voltage, and current protection circuits.



Original Press Release:



Supertex Introduces High Speed, High Voltage, Class-D Audio Amplifier Driver



MD7120 Features Up To 200V Bridge Supply Voltage and Over 90% Efficiency

SUNNYVALE, Calif., June 24, 2008- Supertex (NasdaqGS: SUPX), a recognized leader in high voltage analog and mixed signal integrated circuits (ICs), today introduced the MD7120, a high voltage, high speed, N-channel, full-bridge power MOSFET driver for use in Class-D audio amplifiers. The MD7120 provides a broad range of output voltage from 12V to 200V, has ±5 nanosecond dead time matching and rise or fall times of less than 30 nanoseconds with a typical 1nF load. The N-channel MOSFETs are driven from normal logic level inputs by directly coupled internal level translators.

The MD7120 can be connected directly to a 200V supply voltage and can drive over 100W output with 90% efficiency. Its internal core consists of control logic, level translators, a bootstrap-powered high side gate driver and over-temperature, under-voltage and current protection circuits. The thresholds of the current protection for both the high and low sides are resistor-programmable.

"The MD7120 has been optimized for parameters critical to Class-D audio performance such as high efficiency and low EMI," states Ahmed Masood, Vice President of Marketing for Supertex. "Additionally, this MOSFET driver provides up to a 3.0A peak driving current with matched output resistance and channel-to-channel propagation delay for lower total harmonic distortion and noise."

The MD7120 is available in a 32-lead QFN package (MD7120K6-G). The part is Green and RoHS compliant. Samples are available from stock. Lead-time for production quantities is 4-6 weeks ARO. Pricing is US $5.20 each for the MD7120K6-G in 1K quantities.

About Supertex
Supertex, Inc. is a publicly held mixed signal semiconductor manufacturer, focused in high voltage analog and mixed signal products for use in the medical, imaging, automotive, industrial, telecommunication, networking, and consumer electronics industries. Supertex product, corporate and financial information is readily available at www.supertex.com.

Ken Vickers
Marketing Communications Manager
Supertex, Inc.
1235 Bordeaux Drive
Sunnyvale, CA. 94089
408-222-4810
kennethv@supertex.com

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