Hi Team,
Could you please explain what this 'loop error' is?
Kind regards,
Katherine
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Hi Team,
Could you please explain what this 'loop error' is?
Kind regards,
Katherine
Hi Katherine,
Thank you for your question. I will feedback to you within 24hour.
regards
Shinya Morita
Hi,
PDR is trying to find best IPRE_CHR current level to meet target tDON. This is feedback loop system to find best IPRE_CHG current. Then "loop error" is gap/error amount from target. PDR_ERR = 1 bit means to limit this gap/error feedback as 1 bit amount only even if gap/error is more than 1 bit. Eventually makes system loop gain lower.
regards
Shinya Morita
Hi Shinya,
What does actual error mean in the picture above? Will it be affected by the KP_PDR setting?
Regards,
Katherine
Hi Katherine,
Actual error means the actual amount of error between target and tDON. KP_PDR and PDR_ERR are independent factor however eventually both of two increase/decrease of gain of PDR loop.
Lowest KP_PDR and PDR_ERR=1bit error is the combination for lowest gain setting for PDR loop.
regards
Shinya Morita
Hi Shinya,
Then "loop error" is gap/error amount from target
I'm not very clear about this. Could you specify what it means? Are there any differences between the gap and the error amounts from target?
Regards,
Katherine
Hi Katherine,
Thank you for your question.
I meant same in Gap and error. It means gap from target.
regards
Shinya Morita