TMS320F2808: F2808 delay to control mosfet

Sammi Shang

Part Number: TMS320F2808

Dear team,

Customer send code to two channels at the same time, to control 2 mosfet. But each time start-up, the PWM is non-sync, which makes the control of MOSFET dealy.

Any suggestions to avoid the delay?

Thanks.

Best regards,

Sammi

over 5 years ago

0 tlee over 5 years ago

TI__Guru 62975 points

Sammi,

Can you clarify if TBCLKSYNC is being used to synchronize the EPWMs? From the EPWM Reference Guide:

-Tommy

0 Cody Watkins over 5 years ago

TI__Mastermind 42195 points

Sammi,

Are you following the recommended "phase locking" procedure outlined in the PWM User's Guide? This should solve your problem, there is no need to enable the sync chain if you are trying to keep a phase shift of zero.

Regards,
Cody

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TMS320F2808: F2808 delay to control mosfet