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YIFEIZHENG
Employee
Employee
First question asked Welcome!

Hi, I am working on phase shifted PWMs in XMC4400. By reading the app note below, I have a doubt on PWM generation for PSFB. In Figure 25, two phase shifted pwms are generated. However, in Figure 26, four pwms (two complementary pair) are needed. How do you get the complementary pair (Q21, Q22) for the slave CC81?

https://www.infineon.com/dgdl/Infineon-XMC4000_XMC1000_%20Introduction_to_Digital_Power_Conversion-A...

Do you have any other ways to generate 120-degree phase-shifted pwms, 6 pwms in total (3 complementary pairs) for 3 half bridges?

Thanks.

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1 Reply
Maragani
Moderator
Moderator
Moderator
25 solutions authored 10 likes received 100 replies posted

hi @YIFEIZHENG 

In XMC4400 device CCU8 each Slice can generate 4 PWM output's, Please refer the device user manual for more information.
And you can generate maximum of 4 PWM's based on the requirement per slice. 
Generation of 120-degree phase-shifted PWM's, 6 PWM's in total (3 complementary pairs) is possible with CCU8. 
Please check the below application note of CCU8

https://www.infineon.com/dgdl/Infineon-CCU8-XMC1000_XMC4000-AP32288-AN-v01_01-EN.pdf?fileId=5546d462...

DAVE Code examples:
https://www.infineon.com/cms/en/product/promopages/aim-mc/dave_downloads.html


Thanks & Regards
Sateesh M

 

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