Texas Instruments DRV8311 Handleiding

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DRV8311 Three-Phase PWM Motor Driver

1 Features

•Three-phase PWM motor driver

–3-Phase brushless DC motors

•3-V to 20-V operating voltage

–24-V Absolute maximum voltage

•High output current capability

–5-A Peak current drive

•Low on-state resistance MOSFETs

–210-mΩ typ R

DS(ON)

(HS + LS) at T

A

= 25°C

•Low power sleep mode

–1.5-µA at V

VM

= 12-V, T

A

= 25°C

•Multiple control interface options

–6x PWM control interface

–3x PWM control interface

–PWM generation mode (SPI/tSPI) with optional

calibration between MCU and DRV8311

•tSPI interface (DRV8311P)

–PWM duty and frequency update over SPI

–Control multiple DRV8311P devices using

standard 4-wire SPI interface

•Supports up to 200-kHz PWM frequency

•Integrated current sensing

–No external resistor required

–Sense amplifier output, one per 1/2-bridge

•SPI and hardware device variants

–10-MHz SPI communication (SPI/tSPI)

•Supports 1.8-V, 3.3-V, and 5-V logic inputs

•Built-in 3.3-V ± 4.5%, 100-mA LDO regulator

•Integrated protection features

–VM undervoltage lockout (UVLO)

–Charge pump undervoltage (CPUV)

–Overcurrent protection (OCP)

–Thermal warning and shutdown (OTW/OTSD)

–Fault condition indication pin (nFAULT)

2 Applications

•Brushless-DC (BLDC) Motor Modules

•Drones and Handheld Gimbal

•Coffee Machines

•Vacuum Robots

•Washer and Dryer Pumps

•Laptop, Desktop, and Server Fans

3 Description

The DRV8311 provides three integrated MOSFET

half-H-bridges for driving a three-phase brushless DC

(BLDC) motor for 5-V, 9-V, 12-V, or 18-V DC rails or

1S to 4S battery powered applications. The device

integrates three current-sense amplifiers (CSA) with

integrated current sense for sensing the three phase

currents of BLDC motors to achieve optimum FOC

and current-control system implementation.

The DRV8311P device provides capability to generate

and configure PWM timers over Texas Instruments

SPI (tSPI), and allows the control of multiple BLDC

motors directly over the tSPI interface. This feature

reduces the number of required I/O ports from the

primary controller to control multiple motors.

Device Information

(1)

PART NUMBERPACKAGEBODY SIZE (NOM)

DRV8311HWQFN (24)3.00 mm × 3.00 mm

DRV8311S

(2)

WQFN (24)3.00 mm × 3.00 mm

DRV8311PWQFN (24)3.00 mm × 3.00 mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

(2)Device available for preview only.

nSLEEP

PWM input

6x / 3x PWM

CSA out

3x voltage feedback

nFAULT

A

B

C

3- to 20-V (24-V abs max)

5-A peak output current

LDO out

3.3V up to 100mA

DRV8311H/S

MOSFETs

LDO Regulator

Integrated Current Sensing

Built-in Protec



on

Charge Pump

MCU

Only on H variant

SPI

Only on SPI variant

DRV8311H/S Simplified Schematic

nSLEEP

CSA out

3x voltage feedback

nFAULT

A

B

C

3- to 20-V (24-V abs max)

5-A peak output current

LDO out

3.3V up to 100mA

DRV8311P

MOSFETs

LDO Regulator

Integrated Current Sensing

Built-in Protec



on

Charge Pump

MCU

tSPI

Motor control

DRV8311P Simplified Schematic

DRV8311

SLVSFN2B – SEPTEMBER 2021 – REVISED FEBRUARY 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product specificaties