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Amplifiers/Converters??

TI MOSFET driver delivers 9A of driver current

Posted: 13 Nov 2002 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? ucc37321? ucc37322? mosfet driver? driver ic?

Texas Instruments Inc. has introduced a family of high-speed MOSFET drivers that deliver 9A of peak drive current in an industry-standard pin-out.

The UCC37321 and UCC37322 can drive MOSFETs in applications that require extreme Miller current, such as switch mode power supplies, dc/dc converters, motor controllers, and class-D switching amplifiers. The drivers are claimed to eliminate the need for additional external circuits, and replace multiple components to reduce space, design complexity, and assembly cost.

Available in SOIC-8, PDIP-8, or in a thermally enhanced 8-pin MSOP PowerPAD package, the drivers utilize a design that minimizes shoot-through current, enabling the outputs of these devices to provide high gate drive current where it is most needed at the Miller plateau region during the MOSFET switching transition.

The design also features a hybrid output stage called TrueDrive technology, which parallels bipolar and MOSFET transistors, and allows efficient current delivery at low supply voltages. Latch up and electrostatic discharge protection circuitries are also included.

Both operate from a supply voltage of 4V to 15V and are screened for operation over the -40C to 105C temperature range. Other features include TL/CMOS-compatible inputs independent of the supply voltage, rise and fall time of 20ns, and typical propagation delay of 25ns.





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