SLOA312 December 2021 DRV8412 , DRV8424 , DRV8426 , DRV8428 , DRV8434 , DRV8436 , DRV8803 , DRV8804 , DRV8805 , DRV8806 , DRV8844 , DRV8847 , DRV8932 , DRV8935 , DRV8955
PRODUCTION DATA
3.3.1.2 Two Phases ON
In this mode of operation, two low-side MOSFETs are turned on together. This mode results in higher torque than the case when single phase is ON. The truth table and timing diagram for this mode of operation are shown in Table 3-5.
Figure 3-8 and Figure 3-9 show the input and output waveforms when driving a unipolar stepper motor in two phases ON mode with the DRV8935.
Table 3-5 Input and Output
Waveforms
| INDEX | IN1 | IN2 | IN3 | IN4 |
|---|---|---|---|---|
| 1 | 0 | 0 | 1 | 1 |
| 2 | 1 | 0 | 0 | 1 |
| 3 | 1 | 1 | 0 | 0 |
| 4 | 0 | 1 | 1 | 0 |
Figure 3-8 Input PWM signal of
DRV8935
Figure 3-9 Output node waveforms of
DRV8935