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UCC27282
SNVSAQ5A –NOVEMBER 2018–REVISED JANUARY 2020
UCC27282 120-V Half-Bridge Driver
with Cross Conduction Protection and Low Switching Losses
1 Features
3 Description
The UCC27282 is a robust N-channel MOSFET
1
•
Drives two N-channel MOSFETs in high-side low-
side configuration
driver with a maximum switch node (HS) voltage
rating of 100 V. It allows for two N-channel MOSFETs
to be controlled in half-bridge or synchronous buck
configuration based topologies. Its 3.5-A peak sink
current and 2.5-A peak source current along with low
pull-up and pull-down resistance allows the
UCC27282 to drive large power MOSFETs with
minimum switching losses during the transition of the
MOSFET Miller plateau. Since the inputs are
independent of the supply voltage, UCC27282 can be
used in conjunction with both analog and digital
controllers.
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5-V typical under voltage lockout
Input interlock
Enable/disable functionality in DRC package
16-ns typical propagation delay
12-ns rise, 10-ns fall time with 1.8-nF load
1-ns typical delay matching
Absolute Maximum Negative Voltage Handling on
Inputs (–5 V)
•
Absolute Maximum Negative Voltage Handling on
HS (–14 V)
The input pins as well as the HS pin are able to
tolerate significant negative voltage, which improves
system robustness. Input interlock further improves
robustness and system reliability in high noise
applications. The enable and disable functionality
provides additional system flexibility by reducing
power consumption by the driver and responds to
fault events within the system. 5-V UVLO allows
systems to operate at lower bias voltages, which is
necessary in many high frequency applications and
improves system efficiency in certain operating
modes. Small propagation delay and delay matching
specifications minimize the dead-time requirement
which further improves efficiency.
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3.5-A sink, 2.5-A Source output currents
Absolute maximum boot voltage 120 V
Low current (7-µA) consumption when disabled
Integrated bootstrap diode
Specified from –40°C to 140°C junction
temperature
2 Applications
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Telecom and merchant power supplies
Motor drives and power tools
Auxiliary inverters
Under voltage lockout (UVLO) is provided for both the
high-side and low-side driver stages forcing the
outputs low if the VDD voltage is below the specified
threshold. An integrated bootstrap diode eliminates
the need for an external discrete diode in many
applications, which saves board space and reduces
system cost. UCC27282 is offered in a small package
enabling high density designs.
Half-bridge and full-bridge converters
Active-clamp forward converters
High voltage synchronous-buck converters
Class-D audio amplifiers
Simplified Application Diagram
Device Information(1)
7V
75V
PART NUMBER
PACKAGE (SIZE)
SON10 (3 mm x 3 mm)
SOIC8 (6 mm x 5mm))
UCC27282
VDD
EN
HO
NC
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
HI
HB
HS
To Load
LI
0 …F
VSS
LO
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.