USB EZ-PD Type-C

Ivan_Lee · ‎May 07, 2020

/* Enable/Disable Current Foldback in QC mode */

#define QC_CF_EN

Can you explain what is the function of this QC_CF_EN define ?

Ivan_Lee · ‎May 07, 2020

Hi, Lisa

Our product is 1C1A application and C port OCP trigger point is 3.6A .

if enabling QC_CF_EN and A port entering QC2 mode , and A port voltage change from 5V to 9V or 12V, then C port OCP trigger point become 3A, why?

if disabling QC_CF_EN and A port entering QC2 mode , and A port voltage change from 5V to 9V or 12V, then C port OCP trigger point still is 3.6A

BR

Ivan

ShifangZ_26 · ‎May 07, 2020

Hi Ivan,

This is for constant current support. The PD spec use current foldback. It is same feature.

Best Regards,

Lisa

Ivan_Lee · ‎May 07, 2020

Hi, Lisa

Our product is 1C1A application and C port OCP trigger point is 3.6A .

if enabling QC_CF_EN and A port entering QC2 mode , and A port voltage change from 5V to 9V or 12V, then C port OCP trigger point become 3A, why?

if disabling QC_CF_EN and A port entering QC2 mode , and A port voltage change from 5V to 9V or 12V, then C port OCP trigger point still is 3.6A

BR

Ivan

CCG3PA - QC_CF_EN