STM32g4 Phase shift Peak Current mode?

[270284440]

Does stm32g4 HRTIM support generate phase shift full bridge PWM with Peak current mode control, including peripherals HRTIM ,DAC,CMPx ?

[Igor Cesko]

Hi 270284440 (Community Member),

According our HRTIM documentation - yes: hardware interconnection (HRTIM, DAC, ADC, COMP, OPAMP) in STM32G4 was improved to support various modes.

Read please https://www.st.com/resource/en/application_note/dm00121475-hrtim-cookbook-stmicroelectronics.pdf (Chapter: A.1.1 Sixth timing unit (Timer F)).

Regards

Igor

[Alex-lab]

Hi,

Unfortunately, I was unable to figure out how any of STM32 MCU can operate under PCMC+PSFB control. PCMC seems to be available only for simple buck-like topologies, but not for phase-shift full bridges. My analysis revealed that if ocref_clr_int had been able to toggle OCxREF signal, such operation would be possible. But in fact it can only reset (clear) the OCxREF, which is not enough for PCMC+PSFB operation. This is indirectly confirmed by absence of any examples or Appnotes on this topic (for stm32). Have I missed something? I would be grateful for any advice.

Best regards,

Alex