SPRUJ53C April 2024 – February 2025 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1
The width of the first pulse can be programmed to any of 16 possible pulse width values. The width or period of the first pulse is given by:
Where TEPWMCLK is the period of the system clock (EPWMCLK) and OSHTWTH is the four control bits (value from 1 to 16)
Figure 19-40 shows the first and subsequent sustaining pulses and Table 19-12 gives the possible pulse width values for a EPWMCLK = 80MHz.
Figure 19-40 PWM Chopper Submodule
Waveforms Showing the First Pulse and Subsequent
Sustaining Pulses| OSHTWTH (hex) | Pulse Width (ns) |
|---|---|
| 0 | 100 |
| 1 | 200 |
| 2 | 300 |
| 3 | 400 |
| 4 | 500 |
| 5 | 600 |
| 6 | 700 |
| 7 | 800 |
| 8 | 900 |
| 9 | 1000 |
| A | 1100 |
| B | 1200 |
| C | 1300 |
| D | 1400 |
| E | 1500 |
| F | 1600 |