TMS320F28232: ECAP and EPWM Synchronization

Vasumani Velmurugan

Prodigy 150 points

Part Number: TMS320F28232

Hai,

I am working in master slave concept of two inverters. I want to synchronize the both inverter PWM's.

I am giving 20kHz PWM from the master device to slave device. This 20kHz pwm is given to ecap pin.

I want to enable synchronization of epwm in slave device using this ecap.

Please give me some suggestion.

Thanks and Regards

Vasu

over 4 years ago

0 MatthewPate over 4 years ago

TI__Guru* 77210 points

Hi, due to inclement weather in our region, many of our subject matter experts are without power and unable to provide support at this time. An expert will get back to you as soon as possible but it likely will not be until next week.

Best,

Matthew

0 Cody Watkins over 4 years ago

TI__Mastermind 42195 points

Vasu,

if this is for a new project I would recommend using a newer design like TMS320F2807x or TMS320F2837x or TMS320F28004x.

In any case I would recommend you look at EPWMSYNCI and EPWMSYNCO. These peripheral options are designed to allow the ePWM to by synchronized to the outside world.

If there is no specific reason why you need to use the eCAP then I would recommend you use this feature.

Regards,
Cody

0 Vasumani Velmurugan over 4 years ago in reply to MatthewPate

Prodigy 150 points

Ok am Waiting to resolve my issue.

and if u can send any references, i will study and work on that

Thanks and Regards

Vasu

0 Vasumani Velmurugan over 4 years ago in reply to Vasumani Velmurugan

Prodigy 150 points

can we XRD pin as digital output??

0 Cody Watkins over 4 years ago in reply to Vasumani Velmurugan

TI__Mastermind 42195 points

Vasu,

The technical reference manual describes these features. https://www.ti.com/lit/pdf/sprui07

You might find "3.2.2.3.3 Time-Base Counter Synchronization" useful.

The datasheet describes the pinout and the pin locations. https://www.ti.com/lit/gpn/tms320f28232

Looking at the datasheet for XRD, it does not indicate any GPIO function. It only shows that it is connected to the external interface read enable.

Regards,
Cody

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TMS320F28232: ECAP and EPWM Synchronization