Tool/software:
Hi All,
To configure the gate circuit for the 4-phase interleaved DC-DC converter, I set it based on TRM p.1987.
However, the phase shift amount is only half of the set value. When I doubled the phase shift amount as a test, it achieved the desired phase shift.
However, when the fourth circuit exceeds DUTY 50%, the DUTY becomes 100%, making DUTY control impossible.
Could you please advise?
① EPWM7 (1st circuit)
・Switching frequency (20kHz) TBPRD: 2500
・Phase shift amount: 0 degrees TBPHS: 0
・Upturn/downturn counter used
② EPWM8 (2nd circuit)
・SW frequency (20kHz) TBPRD: 2500
・Phase shift amount 90 degrees TBPHS: 625
・Upturn/downturn counter used
③ EPWM9 (3rd circuit)
・SW frequency (20kHz) TBPRD: 2500
・Phase shift amount 180 degrees TBPHS: 1250
・Up/down counter used
④ EPWM6 (4th circuit)
・SW frequency (20kHz) TBPRD: 2500
・Phase shift amount 270 degrees TBPHS: 1875
・Up/down counter used
※EPWM_CLOCK is used at 100MHz
Best Regards,
Ito
