uP1952
12V MOSFET Drivers with Output Disable
for Single Phase Synchronous-Rectified Buck Converter
Features
General Description
The uP1952 is a dual, high voltage MOSFET driver All-In-One Synchronous Buck Drivers
optimized for driving two N-Channel MOSFETs in a
synchronous-rectified buck converter. Each driver is
capable of driving a 5000pF load with 30ns transition time.
This device combined with uPI multi-phase buck PWM
Bootstrapped High-Side Driver
Adaptive Anti-Shoot-Through Protection
Circuitry
controller forms a complete core voltage regulator for
advanced micro-processors.
Tri-State Input for Bridge Shutdown
Output Disable Control Turns Off both
MOSFETs
The uP1952 features adaptive anti-shoot-through
protection that prevents cross-conduction of the external
MOSFET while maintains minimum deadtime for optimized
efficiency.
Under Voltage Lockout for Supply Input
PSOP - 8L and WDFN3x3 - 8L Packages
RoHS Compliant and Halogen Free
Both gate drives are turned off by pulling low OD# pin or
high-impedance at PWM pin, preventing rapid output
capacitor discharge during system shutdowns.
Applications
Other feature is supply input under voltage lockout. The
uP1952 is available in thermal enhanced PSOP-8L and
WDFN3x3-8L packages.
Core Voltage Supplies for Desktop, Motherboard
CPUs
High Frequency Low Profile DC/DC Converters
Ordering Information High Current Low Voltage DC/DC Converters
Pin Configuration
Order Number
uP1952PSU8
Package Type
PSOP-8L
Top Marking
uP1952P
uP1952Q
uP1952R
uP1952QDD8 WDFN3x3-8L (0.5mm)
uP1952RDE8 WDFN3x3-8L (0.65mm)
BOOT
PWM
OD#
1
2
3
4
8
7
6
5
UGATE
PHASE
GND
GND
Status:
In Production: uP1952PSU8
Others: Please check the sample/production availability
with uPI representatives.
VCC
LGATE
uP1952PSU8
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 requirement. They are halogen-free,
RoHS compliant and 100% matte tin (Sn) plating that are
suitable for use in SnPb or Pb-free soldering processes.
BOOT
UGATE
1
2
3
4
8
7
6
5
PWM
OD#
VCC
PHASE
GND
GND
LGATE
uP1952QDD8
PWM
GND
OD#
VCC
BOOT
1
2
3
4
8
7
6
5
UGATE
PHASE
LGATE
GND
uP1952RDE8
uP1952-DS-F0100, July 2013
www.upi-semi.com
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