AM2434: sigma-delta (sdfm) trip generation

Jan J

Part Number: AM2434

Hi experts,

I am working on the sigma-delta examples (sdfm) with Motor Control SDK 09.02.00.11 looking at the Fast Detect and Over-current Comparator having some questions:

How can I use those units for generating a Trip event for the AM24 ePWM units?

What settings are required to route the corresponding events (internally) to the AM24 ePWM Trip Zone inputs?

Thanks!

Best regards,

Jan

9 months ago

0 Achala Ram 9 months ago

TI__Intellectual 2700 points

Hi Jan,

Thanks for your query.

I will check on this and get back to you.

Best Regards

Achala Ram

0 Achala Ram 9 months ago in reply to Achala Ram

TI__Intellectual 2700 points

Hi Jan,

Jan J said:
What settings are required to route the corresponding events (internally) to the AM24 ePWM Trip Zone inputs?

AM243x EPWM does not have an ICSS event as an input source for the trip zone.

GPIO (external) is the only way to provide an input for the EPWM trip zone.

See the 12.4.3.3.1 section in TRM:ti.com/lit/ug/spruim2h/spruim2h.pdf?ts=1733733786088&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FAM2434

The ICSS PWM trip zone uses the SDFM fast detect as an input source, and its output comes out the ICSS PWM trip zone output pin. This output can be connected to the EPWM trip zone input GPIO pins.

For detailed information on fast detect and ICSS PWM routing, please refer the below mentioned docs

AM243x Motor Control SDK: SDFM Interface Design
6.4.10 PWM module in TRM:AM64x/AM243x Technical Reference Manual (Rev. H)

Thanks & Regards,

Achala Ram

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AM2434: sigma-delta (sdfm) trip generation