NCP5355
12 V Synchronous Buck
Power MOSFET Driver
The NCP5355 is a dual MOSFET gate driver optimized to drive the
gates of both high- and low-side Power MOSFETs in a Synchronous
Buck converter. The NCP5355 is an excellent companion to
multiphase controllers that do not have integrated gate drivers, such as
ON Semiconductor鈥檚 NCP5306, NCP5314 or NCP5316. This
architecture provides the power supply designer greater flexibility by
being able to locate the gate drivers close to the MOSFETs.
Driving MOSFETs with a 12 V source as opposed to a 5.0 V can
significantly reduce conduction losses. Optimized internal, adaptive
nonoverlap circuitry further reduces switching losses by preventing
simultaneous conduction of both MOSFETs.
The floating top driver design can accommodate MOSFET drain
voltages as high as 26 V. Both gate outputs can be driven low by
applying a low logic level to the Enable (EN) pin. An Undervoltage
Lockout function ensures that both driver outputs are low when the
supply voltage is low, and a Thermal Shutdown function provides the
IC with overtemperature protection.
The NCP5355 has the same pinout as the NCP5351 5.0 V Gate
Driver.
Features
http://onsemi.com
MARKING
DIAGRAM
1
SO-8
D SUFFIX
CASE 751
1
A
L
Y
W
= Assembly Location
= Wafer Lot
= Year
= Work Week
8
5355
ALYW
8
PIN CONNECTIONS
DRN
TG
BST
CO
1
8
PGND
BG
V
S
EN
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8.0-14 V Gate Drive Capability
2.0 A Peak Drive Current
Rise and Fall Times < 15 ns Typical into 3300 pF
Propagation Delay from Inputs to Outputs < 30 ns
Adaptive Nonoverlap Time Optimized for Large Power MOSFETs
Floating Top Driver Accommodates Applications Up to 26 V
Undervoltage Lockout to Prevent Switching when the Input
Voltage is Low
Thermal Shutdown Protection Against Overtemperature
TG to DRN Pull-Down Resistor Prevents HV Supply-Induced
Turn On of Top MOSFET
BG to PGND Pull-Down Resistor Prevents Transient Turn On of
Bottom MOSFET
Internal Bootstrap Diode Reduces Parts Count and Total Solution
Cost
ORDERING INFORMATION
Device
NCP5355D
NCP5355DR2
Package
SO-8
SO-8
Shipping
98 Units/Rail
2500 Tape & Reel
漏
Semiconductor Components Industries, LLC, 2003
1
March, 2003 - Rev. 4
Publication Order Number:
NCP5355/D
NCP5355/D相關(guān)型號PDF文件下載
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