The Polulu DRV8833 Dual Motor Driver Carrier 1.2 A is a dual H-Bridge Motor-Driver IC that can be used for bidirectional control of two Brushed DC motors. The Dual Motor Driver's small breakout board can deliver a continuous current of 1.2A per channel to a pair of two DC motors and can also tolerate a peak of 2A for a few seconds. This is why the Dual Motor Driver Carrier is the ideal driver for small motors operating at relatively low voltages.
With an operating voltage range of 2.7 to 10.8 V and built-in protection against residual voltage, undervoltage, overcurrent and overheating, the DRV8833 Motor-Driver Carrier is a great solution for operating small low-voltage motors.
Features:
- operating voltage: 2.7 to 10.8 V
- Output current: continuous 1.2 A per motor (peak 2 A)
- motor outputs can run in parallel to provide a continuous current of 2.4 A (peak at 4 A) to a single motor
- Inputs are 3 V compatible
- Switch off at undervoltage, overcurrent and overheatingX
- Rücc power protection circuit
- Current limiting can be made possible by adding perceptual resistances. Please note that these are not included in the scope of delivery!
Using the motor driver
In a typical application, power connectors are mounted on one side of the board and control connectors are mounted on the other side. The nSLEEP pole is set to HIGH and can remain disconnected if you do not want to use the DRV8833's sleep mode. Each of the motor channels has two control inputs (xIN1 and xIN2) that set the status of the output signals (xOUT1 and xOUT2). The PWM signal can turn any of these inputs. Refer to the DRV8833 datasheet for more information on how the inputs affect the driver outputs.
The nFAULT pole is an open drain output that is operated low by the chip when an overcurrent, overheating or undervoltage condition occurs. Otherwise, the pole is in a floating state, so you will need to connect an external pull-up resistor (or use a microcontroller input with built-in ready pull-up) if you want to monitor the driver's fault conditions.
Current limitation
The DRV8833 can actively limit the current through the motors. A fixed frequency PWM current control (current chopping) is used. This carrier board standardly connects the current sense pole to the ground, disabling the current limiting feature. To activate current limiting, you can use a knife to cut the break points on the board's back and then apply some suitable current sense resistances to the unused pads on the front. The illustration also shows this. The pads have been matched to the size of the 1206 surface mount resistors. For more information on how the resistance values affect current limiting, see the DRV8833 datasheet.
| Shipping weight: | 0,01 Kg |
