Texas Instruments DRV8833C, Руководство пользователя

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Introduction to the EVM
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2.2 Test Points
Test points are provided and labeled according to the inputs and outputs of the DRV8833C motor driver.
J4 is also provided as test points. If external control of the DRV8833C is desired, remove R11 to isolate
the MCU from the DRV8833C.
2.3 Jumpers and Buttons
Designator Picture Description
Sets the value of sensing resistor which determines the chopping current for the motor
Connect 1 jumper vertically on J1 and J3 for 200 mA
J1, J3 Connect 2 jumpers vertically on J1 and J3 for 400 mA
Connect 3 jumpers vertically on J1 and J3 for 600 mA
The picture to the left shows 3 jumpers connected on J1 and J3
START/STOP Press to start/stop the motor
SPEED UP Press and hold to increase the speed of the motor
SPEED DOWN Press and hold to decrease the speed of the motor
DIR Change direction of the motor
FULL/HALF Open for half micro-step, close for full step
nSLEEP Open for sleep mode, close to enable
START/STOP: Push the button to start or stop the motor. Starts the motor with the starting speed (100
pps at full micro-step, 200 pps at half micro-step). Stops the motor from current speed to zero with internal
fixed deceleration rate (200 pps at full micro-step, 400 pps at half micro-step). If the speed of the stepper
is less than stopping speed, the MCU will cut off the pulse-width modulation (PWM) input and stop the
stepper immediately.
SPEED UP: Push and hold to speed up the motor with internal fixed linear acceleration rate (200 pps at
full micro-step, 400 pps at half micro-step). Limited to the MAX speed by software (1000 pps at full micro-
step, 2000 pps at half micro-step).
4 DRV8833C Evaluation Module SLVUAD4 – November 2014
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