General Description

The AOZ5116QI is a high efficiency synchronous buck

power stage module consisting of two asymmetrical

MOSFETs and an integrated driver. The MOSFETs are

individually optimized for operation in the synchronous

buck configuration. The High-Side MOSFET is optimized

to achieve low capacitance and gate charge for fast

switching with low duty cycle operation. The Low-Side

MOSFET has ultra low ON resistance to minimize

conduction loss. AOZ5116QI comes with low noise

technology enhancement at switching node to reduce

noise interference.

The AOZ5116QI uses a PWM and SMOD# input for

accurate control of the power MOSFETs switching

activities, is compatible with 3V and 5V (CMOS) logic and

supports Tri-State PWM.

A number of features are provided making the

AOZ5116QI a highly versatile power module. The bootstrap

switch is integrated in the driver. The Low-Side

MOSFET diode can be driven into diode emulation mode

to provide asynchronous operation and improve lightload

performance. The pin-out is also optimized for low

parasitics, keeping their effects to a minimum.

Features

? 4.5V to 25V power supply range

? 4.5V to 5.5V driver supply range

? 55A continuous output current

- Up to 80A with 10ms on pulse

- Up to 120A with 10us on pulse

? Up to 2MHz switching operation

? 3V/5V PWM and Tri-State input compatible

? Supports Intel? Power State 4

? Thermal Warning Output

? Thermal Shutdown

? Under-Voltage LockOut protection

? SMOD# control for Diode Emulation / CCM operation

? Low Profile 5x5 QFN-31L package

Applications

? Notebook computers

? VRMs for motherboards

? Point of load DC/DC converters

? Video gaming consoles