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

SUNNYVALE, CA -- (MARKET WIRE) -- Jun 24, 2008 -- Supertex (NASDAQ: 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

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