TMS320F28069: Connecting external fault detect line to Trip Zone GPIO

mihir dave

Expert 1025 points

Part Number: TMS320F28069

Hi, Can i connect external fault detect pin to the GPIO of TRIP zone sub module.

Because ,whenever their is fault occurred i want trip zone to turn PWM off.

over 6 years ago

0 Cody Watkins over 6 years ago

TI__Mastermind 42195 points

In the event of a fault the trip zone is used to turn off the PWMs quickly. The source of that signal doesn't really matter.

What "external fault detect pin" are you referring to, is this coming from another device? Please note that F28069 does not have an "ERRORSTS" pin like some other C2000 devices.

Regards,
Cody

0 mihir dave over 6 years ago in reply to Cody Watkins

Expert 1025 points

Hi Cody,

"external fault detect pin" is the output of earth leakage detector circuit.

Thank you

Your Faithfully

Mihir Dave

0 mihir dave over 6 years ago in reply to Cody Watkins

Expert 1025 points

Hi Cody,

I also have one doubt ,

After receiving Trip signal ePWM will stop functioning.but, what about the interrrupt which are generated by the ePWM ?

Interrupt's will be generated if the corresponding ePWM is stopped due to TRIP event?

Thank you

Your Faithfully

Mihir Dave

0 Cody Watkins over 6 years ago in reply to mihir dave

TI__Mastermind 42195 points

Mihir,

the Trip-Zone submodule can be used to generate interrupts. You can use the same signal from the cycle-by-cycle or one-shot trips to generate interrupts. Please look at Figure 3-40 "Trip-Zone Submodule Interrupt Logic" of the Technical Reference Manual.

Regards,
Cody

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TMS320F28069: Connecting external fault detect line to Trip Zone GPIO