Drivers produce high gate drive current

A new family of high-speed MOSFET drivers delivers 9A of peak drive current in an industry standard pinout.

A new family of high-speed mosfet drivers from Texas Instruments delivers 9A of peak drive current in an industry standard pinout.

The UCC37321 and UCC37322 can drive the largest of metal-oxide semiconductor field-effect transistors in applications that require extreme Miller current, such as switch mode power supplies, DC/DC convertors, motor controllers and class-D switching amplifiers.

The drivers effectively eliminate the need for additional external circuits, and replace multiple components to reduce space, design complexity and assembly cost.

Using a design that minimises shoot-through current, the outputs of these devices can provide high gate drive current where it is most needed at the Miller plateau region during the mosfet switching transition.

A unique hybrid output stage called TrueDrive technology, parallels bipolar and mosfet transistors, and allows efficient current delivery at low supply voltages.

With this drive architecture, UCC37321/2/3 can be used in industry standard 6, 9 and many 12A driver applications.

Latch up and electrostatic discharge protection circuitries are also included.

Features include: an industry-standard pinout; an active high logic function pin; high-peak current drive capability of +/-9A at the Miller plateau region using TrueDrive technology; efficient constant current sourcing using a novel bipolar and CMOS output stage; TTL/CMOS compatible inputs independent of supply voltage; 20ns typical rise and fall times with 10nF load; typical propagation delay times of 25ns with input falling and 35ns with input rising; 4 to 15V supply voltage; and temperature ratings from -40 to +105C.

UCC37321/2 family products are available now from TI and its authorised distributors in SOIC-8, PDIP-8 and 8-pin MSOP PowerPAD packaging.

The PowerPAD package drastically lowers the thermal resistance to extend the temperature operation range and improve the long-term reliability.

Suggested resale pricing in quantities of 1000 units is $0.99.

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