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( File format: PDF, 546 KB )
Dual 4-A High-Speed Low-Side MOSFET Driver with Enable
Texas Instruments

Features
Controlled BaselineOne Assembly/Test Site, One Fabrication SiteExtended Temperature Performance of -55C to 125CEnhanced Diminishing Manufacturing Sources (DMS) SupportEnhanced Product-Change NotificationQualification Pedigree(1)Industry-Standard Pinout Enable Functions for Each DriverHigh Current-Drive Capability of 4 A Unique Bipolar and CMOS True-Drive Output Stage Provides High Current at MOSFET Miller ThresholdsTTL-/CMOS-Compatible Inputs Independent of Supply Voltage20-ns Typical Rise and 15-ns Typical Fall Times With 1.8-nF LoadTypical Propagation Delay Times of 25 ns With Input Falling and 35 ns With Input Rising4-V to 15-V Supply VoltageDual Outputs Can Be Paralleled for Higher Drive CurrentAvailable in Thermally-Enhanced MSOP PowerPAD? Package With 4.7C/W jcAPPLICATIONSSwitch-Mode Power SuppliesDC/DC ConvertersMotor ControllersLine DriversClass-D Switching Amplifiers (1) Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.PowerPAD is a trademark of Texas Instruments. DESCRIPTION/ORDERING INFORMATIONThe UCC27424-EP high-speed, dual, noninverting MOSFET driver can deliver large peak currents into capacitive loads. The thermally-enhanced 8-pin PowerPAD? MSOP package (DGN) drastically lowers the thermal resistance to improve long-term reliability. The device also is offered in the standard SOIC-8 (D) or PDIP-8 (P) packages. Using a design that inherently minimizes shoot-through current, this driver delivers 4 A of current where it is needed most ? at the Miller plateau region during the MOSFET switching transition. A unique bipolar and MOSFET hybrid output stage in parallel also allows efficient current sourcing and sinking at low supply voltages. The UCC27424-EP provides enable (ENB) functions to better control the operation of the driver applications. ENBA and ENBB are implemented on pins 1 and 8, which previously were left unused in the industry-standard pinout. ENBA and ENBB are pulled up internally to VDD for active-high logic and can be left open for standard operation.




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