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SLUS545B − NOVEMBER 2002 − REVISED NOVEMBER 2004
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FEATURES
DESCRIPTION
D
D
D
D
Industry-Standard Pin-Out
Enable Functions for Each Driver
High Current Drive Capability of 4 A
The UCC27423/4/5 family of high-speed dual MOSFET
drivers can deliver large peak currents into capacitive
loads.Three standard logic options are offered –
dual-inverting, dual-noninverting and one-inverting and
Unique BiPolar and CMOS True Drive Output
Stage Provides High Current at MOSFET
Miller Thresholds
one-noninverting driver. The thermally enhanced 8-pin
TM
PowerPAD
MSOP package (DGN) drastically lowers
the thermal resistance to improve long-term reliability.
It is also offered in the standard SOIC-8 (D) or PDIP-8
(P) packages.
D
D
D
TTL/CMOS Compatible Inputs Independent of
Supply Voltage
20-ns Typical Rise and 15-ns Typical Fall
Times with 1.8-nF Load
Using a design that inherently minimizes shoot-through
current, these drivers deliver 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.
Typical Propagation Delay Times of 25 ns with
Input Falling and 35 ns with Input Rising
D
4-V to 15-V Supply Voltage
D
Dual Outputs Can Be Paralleled for Higher
Drive Current
D
D
Available in Thermally Enhanced MSOP
The UCC27423/4/5 provides enable (ENBL) functions
to have better control of the operation of the driver
applications. ENBA and ENBB are implemented on pins
1 and 8 which were previously left unused in the industry
standard pin-out. They are internally pulled up to Vdd for
active high logic and can be left open for standard
operation.
TM
PowerPAD
Package with 4.7°C/W θjc
Rated From –40°C to 105°C
APPLICATIONS
D
D
D
D
D
Switch Mode Power Supplies
DC/DC Converters
BLOCK DIAGRAM
Motor Controllers
Line Drivers
8
ENBB
Class D Switching Amplifiers
ENBA
1
INVERTING
7
6
OUTA
VDD
VDD
INA
2
3
NON−INVERTING
INVERTING
GND
5
OUTB
INB
4
NON−INVERTING
UDG−01063
PowerPADt is a trademark of Texas Instruments Incorporated.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2003, Texas Instruments Incorporated
1
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