DRV8833 Dual Motor Driver Carrier

Product Code:
2130
£4.20 £3.50
This tiny breakout board for TI’s DRV8833 dual motor driver can deliver 1.2 A per channel continuously (2 A peak) to a pair of DC motors.
DRV8833 Dual Motor Driver Carrier DRV8833 Dual Motor Driver Carrier DRV8833 Dual Motor Driver Carrier DRV8833 Dual Motor Driver Carrier DRV8833 Dual Motor Driver Carrier DRV8833 Dual Motor Driver Carrier DRV8833 Dual Motor Driver Carrier
DRV8833 Dual Motor Driver Carrier

With an operating voltage range from 2.7 V to 10.8 V and built-in protection against reverse-voltage, under-voltage, over-current, and over-temperature, this driver is a great solution for powering small, low-voltage motors.

Texas Instruments’ DRV8833 is a dual H-bridge motor driver IC that can be used for bidirectional control of two brushed DC motors at 2.7 V to 10.8 V. It can supply up to about 1.2 A per channel continuously and can tolerate peak currents up to 2 A per channel for a few seconds, making it an ideal driver for small motors that run on relatively low voltages. Since this board is a carrier for the DRV8833, we recommend careful reading of the DRV8833 datasheet. The board ships populated with SMD components, including the DRV8833, and adds a FET for reverse battery protection.

This board is very similar to our DRV8835 dual motor driver carrier in operating voltage range and continuous current rating, but the DRV8835 has a lower minimum operating voltage, offers an extra control interface mode, and is 0.1″ smaller in each dimension; we also carry a DRV8835 dual motor driver shield that is easy to use with an Arduino. The DRV8833 has a higher peak current rating (2 A per channel vs 1.5 A), optional built-in current-limiting, and no need for externally supplied logic voltage.

Features

  • Dual-H-bridge motor driver: can drive two DC motors or one bipolar stepper motor
  • Operating voltage: 2.7‌‌ V to 10.8 V
  • Output current: 1.2 A continuous (2 A peak) per motor
  • Motor outputs can be paralleled to deliver 2.4 A continuous (4 A peak) to a single motor
  • Inputs are 3V- and 5V-compatible
  • Under-voltage lockout and protection against over-current and over-temperature
  • Reverse-voltage protection circuit
  • Current limiting can be enabled by adding sense resistors (not included)

Using the motor driver

 

Minimal wiring diagram for connecting a microcontroller to a DRV8833 dual motor driver carrier.

 

In a typical application, power connections are made on one side of the board and control connections are made on the other. The nSLEEP pin is pulled high on the board and can be left disconnected if you do not want to use the low-power sleep mode of the DRV8833. Each of the two motor channels has a pair of control inputs, xIN1 and xIN2, that set the state of the corresponding outputs, xOUT1 and xOUT2; pulse width modulated (PWM) signal can be applied to each of these inputs. The control inputs are pulled low internally, effectively disabling the motor driver outputs by default. See the truth tables in the DRV8833 datasheet for more information on how the inputs affect the driver outputs.

The nFAULT pin is an open-drain output that is driven low by the chip whenever an over-current, over-temperature-or under-voltage condition occurs. Otherwise, it remains in a floating state, so you will need to connect an external pull-up resistor (or use a microcontroller input with its built-in pull-up enabled) if you want to monitor fault conditions on the driver.

Size: 0.5" x 0.8"¹
Weight:  1 g¹
Motor driver: DRV8833
Motor channels: 2
Minimum operating voltage: 2.7V
Maximum operating voltage: 10.8V
Continuous output current per channel: 1.2A²
Peak output current per channel: 2A
Continuous paralleled output current: 2.4A²
Reverse voltage protection?: Yes

PIN

Default State

Description

VIN

 

Reverse-protected 2.7‌ V to 10.8 V motor power supply connection. Operation with VIN below 5 V slightly reduces the maximum current output.

VMM

 

This pin gives access to the motor power supply after the reverse-voltage protection MOSFET (see the board schematic below). It can be used to supply reverse-protected power to other components in the system. It is generally intended as an output, but it can also be used to supply board power.

GND

 

Ground connection points for the motor power supply and control ground reference. The control source and the motor driver must share a common ground.

AOUT1

 

The motor A half-bridge 1 output.

AOUT2

 

The motor A half-bridge 2 output.

BOUT1

 

The motor B half-bridge 1 output.

BOUT2

 

The motor B half-bridge 2 output.

AIN1

LOW

A logic input control for motor channel A. PWM can be applied to this pin.

AIN2

LOW

A logic input control for motor channel A. PWM can be applied to this pin.

BIN1

LOW

A logic input control for motor channel B. PWM can be applied to this pin.

BIN2

LOW

A logic input control for motor channel B. PWM can be applied to this pin.

nSLEEP

HIGH

Sleep input: when this pin is driven low, the chip enters a low-power sleep mode. (Labeled SLP on the board silkscreen.)

nFAULT

FLOAT

Fault output: driven low in the event of an over-current, over-temperature, or under-voltage condition; floating otherwise. (Labeled FLT on the board silkscreen.)

AISEN

 

Current sense pin for motor A. This pin is connected to ground and does not function by default, but current limiting can be enabled by making the modifications described below.

BISEN

 

Current sense pin for motor B. This pin is connected to ground and does not function by default, but current limiting can be enabled by making the modifications described below.

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