Specification
- Number of channels: 2
- Supply voltage: 2.0 V to 11 V
- Continuous current per channel: 1.2 A
- Maximum instantaneous current per channel: 1.5 A
- Continuous current with connected channels: 2.4 A
- Protection against reverse power connection
- Protection against too low and too high voltage
- Dimensions: 17.8 x 10.2 mm
- Weight: 0.5 g
Details in thedocumentation.
Product description: DRV8835 - dual-channel 11 V / 1.2 A motor driver
The module based on the Texas Instruments DRV8835 system is a two-channel DC motor driver. The advantage of the system are extremely small dimensions - the board is the size of a DIP 14-pin housing. The module can control motors powered with the voltage in the range of 2.0 V to 11 V with a continuous current consumption of 1.2 V. The channels of the controller can be connected to increase the current efficiency - up to 2.4 A. The kit includes the module and goldpin connectors.
Leads
| PIN | Description |
|---|---|
| VIN | Supply voltage (2.7V-10.8V) |
| GND | System mass potential |
| VMM | Power output with reverse connection protection |
| VCC | Supply voltage of the logic part of the system |
| AOUT1, AOUT2 | Channel A outputs controlled by pins AIN1 and AIN2 |
| BOUT1, BOUT2 | Channel B outputs controlled by pins BIN1 and BIN2 |
| AIN1, AIN2 | Digital inputs controlling channel A. It is possible to connect PWM signal to them. Defaults to low. |
| BIN1, BIN2 | Digital inputs controlling channel B. It is possible to connect PWM signal to them. Defaults to low. |
| MODE | Logic input. Providing a low state causes that the system is in starnie IN / IN. (Tables below) |
|
Table for PHASE / ENABLE MODE = 1 |
||||
| xPHASE | xENABLE | xOUT1 | xOUT2 | Operating mode |
| 1 | PWM | L. | PWM |
Reverse rotation at specified speed: PWM% |
| 0 | PWM | PWM | L. |
Forward rotation at specified speed: PWM% |
| X | 0 | L. | L. | Braking (outputs connected to ground) |
|
Table for IN / IN MODE = 0 |
||||
| xIN1 | xIN2 | xOUT1 | xOUT2 | Operating mode |
| 0 | 0 | OPEN | OPEN | The outputs are turned off. |
| 0 | PWM | L. | PWM |
Reverse rotation at specified speed: PWM% |
| PWM | 0 | PWM | L. |
Forward rotation at specified speed: PWM% |
| PWM | 1 | L. | PWM |
Reverse rotation at specified speed: 100% - PWM% |
| 1 | PWM | PWM | L. |
Forward rotation at specified speed: 100% - PWM% |
| 1 | 1 | L. | L. | Braking (outputs connected to ground) |
Scheme
The system includes a transistor that protects the module against reverse power connection and the passive elements necessary for the proper operation of the controller.
Diagram of the moduleDRV8835.
Video describing the operation of the H bridge - driver of DC motors.
Miniature DC motor driver module
Pololu 2135 is an extremely miniaturized driver module for two DC motors with a continuous current consumption of up to 1.2 A and a supply voltage from 2.0 V to 11 V. The dimensions of the printed circuit board are only 10.2 x 17.8 mm, and its weight reaches 0 , 5 g - PCB has a size comparable to the DIP14 housing.
The module is based on the integrated, high-performance DRV8835 controller from Texas Instruments. The product has built-in protection against reverse power polarity and too low or too high voltage. Two pairs of digital inputs are used to control the direction and rotational speed of the motors, operating in a separate section supplied with a voltage ranging from 2 V to 7 V.
Sample applications
DRV8835 - dual-channel 11V / 1.2A motor driver - Pololu 2135 isperfect for the construction of miniature, lightweight mobile robots - both wheeled and track-driven, as well as floating or walking robots. It is also suitable for all kinds of mechanisms powered by bipolar stepper motors.
The spacing of the mounting pads is compatible with the raster of classic goldpins (100 mils, i.e. 2.54 mm), thanks to which it fits the contact plates, which greatly facilitates prototyping and conducting experiments even before mounting the controller into the final structure.
Useful links |
