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Power Management ICs Forum Discussions

Luc
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Can XDPP1100-Q040 generate 4 pairs of complementary PWMs with 90 degrees phase shift among each pairs? If yes, how to configure it?

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Sodum
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Hello @Luc ,

Can you please share the input & output ratings of your application.

We have a digital multiphase controllers in Infineon Portfolio, specifically designed for multiphase buck topologies with low voltage high current applications. Please refer below web link for more details,

https://www.infineon.com/cms/en/product/power/dc-dc-converters/digital-multiphase-controllers/

Regards,

Premsagar S

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RamamurthyAv
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Hi @Luc ,               

Thanks for posting on the Infineon community page.

We have noted your query and are working on it.

Best Regards,
Avinash R K

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RamamurthyAv
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Hi @Luc ,

              We can use the register map in the GUI.

RamamurthyAv_0-1669702969841.png

 

RamamurthyAv_1-1669702995921.png

RamamurthyAv_2-1669703113124.png

For additional information, please refer to the below document.

DC-DC Converters XDP™ digital power XDPP1100 technical reference manual

Best Regards,
Avinash R K

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Thanks for the information. I've also read this part in the  technical reference manual. To  my understanding, there are only two ramps, ramp0 and ramp1, which can only generate two pairs of complementary PWMs with configurable phase shift. Waveforms shown in Figure 58 just demonstrate two pairs of complementary PWMs too. But my application requires 4 pairs of complementary PWMs, that is 8 PWM outputs in total. In addition, each PWM may have adjustable duty ratio from 0 to 100%. Can XDPP1100 do that?

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RamamurthyAv
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Hi @Luc ,

            Thank you for outlining your requirements so clearly. 
For this requirement, we need two XDPP1100s connected in parallel. Refer to the application_note current sharing section.

Best Regards
Avinash R K

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Thank you, Avinash! Two XDPP1100s connected in parallel may solve this issue. But it is too costly. Hope that future version of XDPP1100 can have more ramps built in.

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RamamurthyAv
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Ok @Luc ,

                    We would like to know the topology. So, we can study if it is possible using one XDPP1100.

Best Regards
Avinash R K

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The topology is four phase interleaved buck in parallel.

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Sodum
Moderator
Moderator
Moderator
5 likes given 25 solutions authored 100 sign-ins

Hello @Luc ,

Can you please share the input & output ratings of your application.

We have a digital multiphase controllers in Infineon Portfolio, specifically designed for multiphase buck topologies with low voltage high current applications. Please refer below web link for more details,

https://www.infineon.com/cms/en/product/power/dc-dc-converters/digital-multiphase-controllers/

Regards,

Premsagar S

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