uP1965S
5V MOSFET Driver with Output Disable for Single Phase
Synchronous-Rectified Buck Converter
Features
General Description
Single 5V Driving Voltage Output
Integrated Bootstrap Diode
The uP1965S is 5V MOSFET driver optimized for driving
twoN-channel MOSFETs in a synchronous rectified buck
converter for mobile computing application. This part has
integrated bootstrap diode to eliminate external component
count. The resistor commonly placed between MOSFET
gate and source for discharge is also integrated, making
external component minimal. This device combined with
uPI multi-phase buck PWM controller forms a complete
core voltage regulator for advanced microprocessors.
Integrated Gate-to-Source Discharge Resistors
Enable/Disable Control
Allow PWM Pin as Multi-Function Setting
Application
Three PWM Input States: High, Low and Tri-State
Tri-State Input for Bridge Shutdown
Anti-Shoot-Through Protection Circuitry
Under Voltage Lockout for Supply Input
WDFN2x2-8L Package
The uP1965S supports enable/disable function that reduces
the power consumption to prolong battery life. Both gate
drives are turned off by pulling low ENpin or high-impedance
at PWM pin, preventing rapid output capacitor discharge
during system shutdown. This device also supports three
PWM input states that along with PWM controller to provide
a complete power solution.
RoHS Compliant and Halogen Free
Applications
Desktop/Laptop CPU/GPU Core Voltage
The uP1965S implements anti-shoot-through protection
that prevents cross-conduction of the external MOSFET
while maintains minimum deadtime for optimized efficiency.
This device also supports supply input under voltage
lockout. The uP1965S is available in thermally enhanced
WDFN2x2-8L package.
Regulators
High Frequency Low Profile DC/DC Converter
High Current Low Voltage DC/DC Converter
Pin Configuration
Ordering Information
BOOT
PWM
EN
1
2
3
4
8
7
6
5
UGATE
PHASE
GND
Order Number
uP1965SDN8
Package
Top Marking
HF
NC
WDFN2x2 - 8L
VCC
LGATE
Note:
(1) Please check the sample/production availability with
uPI representatives.
(2) uPI products are compatible with the current IPC/
JEDEC J-STD-020 requirements. They are halogen-free,
RoHS compliant and 100% matte tin (Sn) plating that are
suitable for use in SnPb or Pb-free soldering processes.
uP1965S-DS-F0000, May. 2018
www.upi-semi.com
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