Texas Instruments Inc. (TI, Dallas, TX) introduced its new UCC37323/4/5 industry-standard footprint, dual-MOSFET, gate driver ICs, which feature higher current, improved noise immunity and are drop-in
replacements for many MOSFET driver ICs. The drivers may be used in a variety of switch-mode power supply and motor-control applications with bias voltages of 15V or less, such as low-voltage, synchronous rectification, dc/dc converters and fractional horsepower, brushless motor applications.
TI's UCC37323/4/5 drivers utilize a combination of bipolar and MOSFET
output stages to provide 4A peak-current capability during both peak
supply voltages and the MOSFET's "Miller Plateau" region of the switching
cycle. In addition, at lower supply voltages down to 4.5V, 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 8A peak
current rating in more demanding applications.
The UCC37323/4/5 drivers are available now. In addition to standard thru-hole and surface-mount packages, the devices are also offered in thermally enhanced and space-saving, eight-pin, MSOP PowerPad packages featuring a 4.7 degrees C/W Theta(jc) rating.
Pricing starts at $0.99 in quantities of 1,000 for the SOIC and PDIP-8 package versions, and $1.09 in quantities of 1,000 for the PowerPad MSOP package.
