SLOA312 December 2021 DRV8412 , DRV8424 , DRV8426 , DRV8428 , DRV8434 , DRV8436 , DRV8803 , DRV8804 , DRV8805 , DRV8806 , DRV8844 , DRV8847 , DRV8932 , DRV8935 , DRV8955
PRODUCTION DATA
3.3.1.1 Full-step Mode with One Phase ON
In this mode of operation, only one low-side MOSFET is turned on at a time, therefore the driving method is the simplest. The truth table and timing diagram for this mode of operation are shown in Table 3-4.
Figure 3-6 and Figure 3-7 show the input and output waveforms when driving a unipolar stepper motor in one phase ON mode with the DRV8935.
Table 3-4 Truth Table and Timing
Diagram
| INDEX | IN1 | IN2 | IN3 | IN4 |
|---|---|---|---|---|
| 1 | 0 | 1 | 1 | 1 |
| 2 | 1 | 0 | 1 | 1 |
| 3 | 1 | 1 | 0 | 1 |
| 4 | 1 | 1 | 1 | 0 |
Figure 3-6 Input PWM Signal
Figure 3-7 Output node waveforms of
DRV8935