Supertex Introduces High Voltage Multi-Fan Controller With High Side Drive for Server and Telecom Equipment

SUNNYVALE, CA -- (MARKET WIRE) -- Apr 20, 2006 -- Supertex, Inc. (NASDAQ: SUPX), a recognized leader in high voltage analog and mixed signal integrated circuits (ICs), today introduced the HV7100, an integrated driver and pulse width modulation (PWM) fan speed controller. Its wide input voltage range of 16 to 90 volts makes it ideal for use in the more efficient +24 and +48 volt systems, such as the ones used for server and telecommunication applications.

The IC features a four-bit PWM control input that interfaces directly with a microcontroller or system processor to control fan speed. It can also be used as a stand-alone fan controller by connecting a thermistor circuit to the linear control pin. The HV7100 also features high-side drive, enabling the use of fans having a ground referenced tachometer signal. A simple LC filter converts the PWM output to a DC voltage for fans requiring DC drive.

"The HV7100 builds on Supertex's long history of developing innovative and cost effective high voltage power management products," states Ahmed Masood, Vice President of Marketing for Supertex. "This product reduces thermal management circuit complexity, improves efficiency, and minimizes parts count for fan trays and fan control modules."

The HV7100 is available in a 14 lead SO (HV7100NG-G) package. The part is "Green" and RoHS-compliant. Samples are available from stock. Lead-time for production quantities is 4-6 weeks ARO. Pricing for the HV7100NG-G is US$1.68 in 1K quantities.

About Supertex

Supertex, Inc. is a publicly held mixed signal semiconductor manufacturer, focused on high voltage interface products for use in the telecommunications, networking systems, medical, automotive and industrial electronics industries. Supertex product, corporate and financial information is readily available at

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