BQ24780S: About Charge Overcurrent Protection (CHGOCP)

Hello Tomoya,

Tomoya Yoshino said:

How many seconds is the CHGOCP judgment time?

Please refer to section 7.3.9.2 Charge Overcurrent Protection (CHGOCP). The OCP is cycle-by-cycle, so the judgement time is based on the chosen switching frequency.

Best Regards,

Christian.

Hello experts.

It's understandable that the OCP is cycle-by-cycle.
With a switching frequency of 800 kHz, how many seconds must the threshold be exceeded before the overcurrent is detected?
If it exceeds even 1 ns, will it be detected as the overcurrent?

Tomoya Yoshino

Hello Tomoya,

We cannot provide that information. The OCP is cycle-by-cycle, so the judgement time is based on the chosen switching frequency, However we can not guarantee at what time durning the cycle the charger will detect the OCP Fault.

Best Regards,

Christian.

Hello experts.

Is there any measure other than Output Inductor or Output Capacitor to lower the inductor current ripple?

Tomoya Yoshino