描述 Description

The uP6281 is a dual, high voltage MOSFET driver optimized

for driving two N-Channel MOSFETs in a synchronousrectified

buck converter. Each driver is capable of driving a

5000pF load with 30ns transition time. This device combined

with uPI multi-phase buck PWM controller forms a complete

core voltage regulator for advanced micro-processors.

The uP6281 features adaptive anti-shoot-through protection

that prevents cross-conduction of the external MOSFET

while maintains minimum deadtime for optimized efficiency.

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.

Other feature is supply input under voltage lockout. The

uP6281 is available in thermal enhanced PSOP-8L or

WDFN3x3-8L packages.

特性 Features

All-In-One Synchronous Buck Drivers

Bootstrapped High-Side Driver

Adaptive Anti-Shoot-Through Protection

Circuitry

1 PWM Signal Generates both Drivers

Tri-State Input for Bridge Shutdown

Output Disable Control Turns Off both MOSFETs

Under Voltage Lockout for Supply Input

PSOP-8L or WDFN3x3-8L Packages

RoHS Compliant and Halogen Free