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EAbra.3
EAbra.3
Associate II
November 10, 2022
Question

I am designing hardware using STM32H7 and I would like to implement HRTIM to provide PWM signal for DC-DC converter. Please provide me the reference schematic that uses HRTIM.

  • November 10, 2022
  • 4 replies
  • 1347 views

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4 replies

Imen.D
ST Technical Moderator
November 14, 2022

Hello @EAbra.3 and welcome to the STM32 Community :)

I recommend you this AN4539 Application note HRTIM cookbook.

Imen

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EAbra.3
EAbra.3Author
Associate II
November 17, 2022

Thanks for your reply. I have gone through AN4539.I am using HRTIM to provide PWM signals for DC-DC converter EPC2152. Which signals of HRTIM I should use for the same? Currently, I am using HRTIM_CHA1, HRTIM_CHA2. Should I use any other signals like HRTIM_FLTX or HRTIM_EEVx for my application. What is the purpose of these signals (HRTIM_FLTX or HRTIM_EEVx)?

EAbra.3
EAbra.3Author
Associate II
November 17, 2022

Please find the design of DC-DC converter EPC2152. As per this diagram HRTIM_CHA1 should be connected to HSIN and HRTIM_CHA2 should be connected to LSIN. Please advise me on using other HRTIMER signals.0693W00000WIb4TQAT.png

Peter BENSCH
Peter BENSCH
ST Technical Moderator
January 4, 2023

I just saw that this topic regarding the EPC2152 has already been partially addressed in another thread.

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