The module is based on a Texas Instruments DRV8833 is a dual driver siników DC. The advantages of the system are extremely small size - tile size case DIP 14-pin. The module can control the motors with a supply voltage range from 2.0 V to 11 V with a continuous current consumption to 1.2 V. the control Channels can be combined to improve the efficiency of current load - up to 2.4 A. the Kit includes module and connector goldpin.
For proper operation of the module, you need to bring food - between the pins VIN and GND and connect insights, responsible for the movement of the engine, which is described in the table below. To control the speed of rotation necessary for control inputs by the user to signal PWM.
|VIN||Supply voltage (2.7 V - 10.8 V)|
|GND||The potential of mass of the system|
|VMM||Power supply output protection against reverse connection of power supply.|
|AOUT1, AOUT2||The output of the channel And managed contacts AIN1 and AIN2|
|BOUT1, BOUT2||The output of channel B, controlled contacts BIN1 and BIN2|
|AIN1, AIN2||The digital control inputs channel A. Possible connection of the PWM signal. Default in the low state.|
|BIN1, BIN2||The digital control inputs channel B. Possible connection of the PWM signal. Default in the low state.|
|nSLEEP||A low state causes the system to sleep mode - energy saving. Default in the high state (pull-up).|
|nFAULT||The output goes into a low state upon detection of errors due to too low supply voltage, high temperature or too much current.|
|AISEN||The entry point to limit the current for channel A. Default in the low state without restrictions.|
|BISEN||The entry point to limit the current for channel B. Default in the low state without restrictions.|
On the module there are fields solders, allowing the placement of resistors in the 1206 case or less. They serve to limit the current passing through the channel A and B. the details of the documentation system DRV8833.
System documentation DRV8833 indicates the maximum continuous current per channel is 1.5 A. the company Pololu Tests showed that when the attack of 1.5 And the temperature protection switches off the system after about a minute of continuous operation. Stable operation possible at a current of not lower than 1.3 And channel.
In the circuit there is a transistor, the security module before the return power connection and necessary for the correct operation of the driver passive components.
The module circuit DRV8833
Video describing the work of bridge H - driver DC motors.
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