THE MAGAZINE FOR COMPUTER APPLICATIONS
Circuit Cellar Online offers articles illustrating creative solutions
and unique applications through complete projects, practical
tutorials, and useful design techniques.

NEW PRODUCT NEWS—edited by John Gorsky

High-Current Dual MOSFET Gate Driver

The UCC37323/4/5 is a new family of enhanced Dual MOSFET Gate Driver ICs that feature higher current and improved noise immunity and are drop-in replacements for many popular MOSFET Driver ICs. These drivers may be used in a variety of switch-mode power supply and motor control applications with bias voltages of 15 V or less, such as low voltage synchronous rectification DC/DC converters and fractional horsepower brushless motor applications. (See power.ti.com/aap7254u.)

The UCC37323/4/5 drivers utilize a unique combination of bipolar and MOSFET output stages to provide 4-A peak-current capability during both peak supply voltage and the MOSFET's Miller Plateau region of the switching cycle, making the devices' current two to three times higher than the closest competitor. In addition, at lower supply voltages down to 4.5 V, the output stage continues to deliver high currents.

These high-speed drivers also feature 25 nanosecond rise and fall times and rail-to-rail voltage swings. All inputs are TTL/CMOS threshold compatible and feature slightly raised thresholds for improved noise immunity from ground bounces. The devices' two outputs can be paralleled for an 8-A peak-current rating in more demanding applications.

The UCC37323 is a dual inverting configuration where as the UCC37324 is a dual non-inverting configuration and the UCC37325 features one inverting and one non-inverting stage.

Pricing starts at $.99 in quantities of 1000 for the SOIC and PDIP-8 package versions and $1.09 in quantities of 1000 for the PowerPadTM MSOP package.

Texas Instruments
(972) 644-5580
Fax: (214) 480-7800
www.ti.com

03-02

Circuit Cellar provides up-to-date information for engineers. Visit www.circuitcellar.com for more information and additional articles.
For subscription information, call (860) 875-2199, subscribe@circuitcellar.com or subscribe online. ęCircuit Cellar, the Magazine for Computer Applications. Posted with permission.