TMS320F28388D: CLB application for intervention PWM signal output

user6101616

Part Number: TMS320F28388D

Dear All,

In the TRM, some description about output of CLB as follow：

(1) PWMA[OE] and PWMB[OE] refer to trip outputs from the respective PWM module.
(2) PWMA[AQ] and PWMB[AQ] refer to the output of the AQ submodule in the respective PWM module.
(3) PWMA[DB] and PWMB[DB] refer to the output of the DB submodule in the respective PWM module.

but I can't find any information about CLB in ePWM chapter, and these descriptions is to simple. I want to kown the PWMB[OE]/PWMB[AQ]/ mean what? And which register of AQ/DB can be directly intervened by CLB.

I can briefly introduce our application background discribed as follow fugure: the CLB moudle is applied to the motor controller. Normally, the C28 core control peripheral (ePWM) sends out PWM signals. In the fault state, CLB needs simple logic to judge the fault type and take over PWM output quickly，so can CLB module realize the above functions through the relationship between output and ePWM module?

over 5 years ago

0 user6101616 over 5 years ago

Intellectual 320 points

Hope to get an answer as soon as possible, thank you very much!

0 Nima Eskandari over 5 years ago in reply to user6101616

TI__Guru 52040 points

You want to use CLB as a GATE for whether PWM signals are enabled or disabled?

0 user6101616 over 5 years ago in reply to Nima Eskandari

Intellectual 320 points

Thanks for your attention.

Six bridges of inverter contain 6 IGBTs, and when some faults occur，the highside PWM in “ON” state， the lowside PWM in "OFF" state；If no fault occurs，all the PWM controlled by C28 and stay in duty-cycle state.

So I want to know these descriptions mentioned in the TRM， If the output of CLB is associated with the below outputs, what effect can be achieved