TMS320F28027: HRPWM

Jordan Zhou

Genius 9340 points

Part Number: TMS320F28027

Hi,

Two questions about F28027 HRPWM:

1) What's the limitation of CPMA in up-down mode? 3~PRD-3?

2) Is there any way to achieve 100% duty cycle in HRPWM mode?

Br, Jordan

over 6 years ago

0 Subrahmanya over 6 years ago

TI__Mastermind 24095 points

Jordan,

In high resolution mode there is limitation on when HR is active w.r.t. the PWM period.
Below is the note from user guide:
In up-down count mode: when counting up, 3 cycles after CTR = 0 until 3 cycles before CTR =PRD,
and when counting down, 3 cycles after CTR = PRD until 3 cycles before CTR = 0.

-Bharathi.