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UCC27223PWPTIN/a65avaiHigh-Efficiency Predictive Synchronous Buck Driver
UCC27223PWPRTIN/a940avaiHigh-Efficiency Predictive Synchronous Buck Driver


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UCC27223PWP-UCC27223PWPR
High-Efficiency Predictive Synchronous Buck Driver
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SLUS558 − DECEMBER 2003
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FEATURES
Maximizes Efficiency by Minimizing
Body-Diode Conduction and Reverse
Recovery Losses
Transparent Synchronous Buck Gate Drive
Operation From the Single Ended PWM Input
Signal
12-V or 5-V Input Operation 3.3-V Input Operation With Availability of
12-V Bus Bias
High-Side and Low-Side ±3-A Dual Drivers On-Board 6.5-V Gate Drive Regulator ±3-A TrueDrive Gate Drives for High
Current Delivery at MOSFET Miller
Thresholds
Automatically Adjusts for Changing
Operating Conditions
Thermally Enhanced 14-Pin PowerPAD
HTSSOP Package Minimizes Board Area and
APPLICATIONS
Multiphase Converters in Combination With
the TPS40090
Non-Isolated 3.3-V, 5-V and 12-V Input
dc-to-dc Converters for Processor Power,
General Computer, Telecom and Datacom
Applications

DESCRIPTION
The UCC27223 is a high-speed synchronous
buck drivers for today’s high-efficiency,
lower-output voltage designs. Using Predictive
Gate Drive� (PGD) control technology, these
drivers reduce diode conduction and reverse
recovery losses in the synchronous rectifier
MOSFET(s).
The UCC27223 includes an enable pin that
controls the operation of both outputs. A logic
latch is also included to keep both outputs low until
the first PWM input pulse comes in. The RDS(on)
ic,good price


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