NCP5355
12 V Synchronous Buck
Power MOSFET Driver
The NCP5355 is a dual MOSFET gate driver optimized to drive the
gates of both high鈭?and low鈭抯ide 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 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
DIAGRAMS
8
8
1
SO鈭?
D SUFFIX
CASE 751
1
8
8
1
SO鈭? EP
D SUFFIX
CASE 751AC
1
5355
ALYW
5355
ALYW
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8.0 V 鈭?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鈭扗own Resistor Prevents HV Supply鈭捍nduced
Turn鈭扥n of Top MOSFET
BG to PGND Pull鈭扗own Resistor Prevents Transient Turn On of
Bottom MOSFET
Internal Bootstrap Diode Reduces Parts Count and Total
Solution Cost
A
L
Y
W
= Assembly Location
= Wafer Lot
= Year
= Work Week
PIN CONNECTIONS
DRN
TG
BST
CO
1
8
PGND
BG
V
S
EN
ORDERING INFORMATION
Device
NCP5355D
NCP5355DR2
NCP5355PDR2
Package
SO鈭?
SO鈭?
SO鈭? EP
Shipping
鈥?/div>
98 Units/Rail
2500 / Tape & Reel
2500 / Tape & Reel
鈥燜or information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
漏
Semiconductor Components Industries, LLC, 2004
1
June, 2004 鈭?Rev. 6
Publication Order Number:
NCP5355/D
NCP5355PDR2 產(chǎn)品屬性
ON Semiconductor
功率驅(qū)動器IC
High Side/Low Side
25 ns
25 ns
- 0.3 V
SMD/SMT
SOIC-8 Exposed Pad
Reel
Inverting, Non-Inverting
2
2
2500
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