Part Number: TMS320F28379D
Other Parts Discussed in Thread: C2000WARE
Hi,
I have had troubles in configuring the PWM features of the microcontroller, especially with the high resolution features. I am designing a power controller with multiple interleaved phases. The controller will use switching frequencies in the MHz range.
I have the following requirements for the PWM control:
- HR duty cycle control with high resolution in symmetrical mode
- HR phase control
- HR dead band control in active high complementary mode
HR period control is not necessary, but it would be nice to have. At this moment, I have two questions:
1. Is it possible to use all the mentioned features above at the same time? I am asking because I have had difficulties implementing these in my own code. I have studied the HRPWM examples in C2000Ware extensively.
2. Should the dead band module take HR part of the PWM signal in to account? In one of my tests, I adjusted the duty cycle of output A with HRPWM in small steps. The output B was generated by the dead band module from channel A in active high complementary mode. In the test, the channel B output moved in 5ns steps while the A moved in smaller steps. I had the DB module configured in HR mode.
I can post some simplified and reproducible code later if needed. Thank you.
