Rev. 1.1 January 2022

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General Description

The AOZ9511QV is an integrated half-bridge gate driver with

smart functions. The device includes one half-bridge gate

driver, capable of driving high-side and low-side N-channel

MOSFETs. Using two AOZ9511QV for single phase motor

drivers and three AOZ9511QV for three phase motor drivers.

The device features multiple protection functions such

as UVLO and over temperature protection. Moreover,

AOZ9511QV provides adjustable gate drive sink and source

current control. By using this control, the user can optimize

performances of EMI and efficiency.

The AOZ9511QV is available in a 4mm×4mm QFN-23L

package and is rated over a -40°C to +125°C ambient

temperature range.

Features

• 3.8V to 28V Input voltage range

• 20AMaximum output current

• Low RDS(ON) internal NFETs

- 7.5mΩ for Both HS/LS

• Adjustable slew-rate control to improve

Radiation EMI performance

• Build-in protect function – UVLO, OTP

• Thermally enhanced 23-pin 4×4 QFN

Applications

• BLDC motor drive

• Fans and pumps

• Power tools

Green

Product

Typical Application

V

IN

AOZ9511QV

DVS

PGND

HIN

LIN

PWMH1

VB

VOUT

PWML1

AGND

VCC

VIN

V

CC

LDO

V

CC

V

IN

AOZ9511QV

DVS

PGND

HIN

LIN

PWMH2

VB

VOUT

PWML2

AGND

VCC

VIN

V

CC

LDO

V

CC

V

IN

AOZ9511QV

DVS

PGND

HIN

LIN

PWMH3

VB

VOUT

PWML3

AGND

VCC

VIN

V

CC

LDO

V

CC

ALPHA & OMEGA

SEMIC ONDUCT OR

AOZ9511QV

28V/20A Smart Motor Module