BQ25713: BQ25713: what is the difference with ACOC and ACx

Star Xu

Part Number: BQ25713

I want to know the difference with ACOC, ACX, ACOC and ACx are over current protection, the datasheet did not show the difference.

Thanks

Star

over 3 years ago

0 Kedar Manishankar over 3 years ago

TI__Mastermind 24075 points

Hi Star,

ACOC is an input overcurrent protection comparator measuring input current across the sense resistor between ACx pins.

0 Star Xu over 3 years ago in reply to Kedar Manishankar

TI__Genius 9645 points

Hi Kedar Manishankar

Thanks for your reply.

I know ACOC is input over current protection

Why the datasheet lists ACX voltage separately

Thanks

Star

0 Tiger Zhou over 3 years ago in reply to Star Xu

TI__Mastermind 18685 points

Hi, Star,

As shown in the table, the differences are:

ACOC has deglitch time, it is related to ILIM2 and can be enabled/disabled by setting.

ACX is a fixed protection which is instantaneous and enforced all the time. Two level of settings are possible.

Both will provide adapter enhanced over current protection. ACOC allows over-load capability, while ACX provides fast-acting protection.

0 user6200525 over 3 years ago in reply to Tiger Zhou

Prodigy 20 points

Hi Tiger,

Thanks for your reply.

I have one question more.

I tried to set ACOC threshold over 180mV and set ACX to 150mV, then increase the load current. I couldn't observed the protection when the voltage between ACP-ACN reaches 150mV. Till it reaches 180mV the ACOC was in effect.

So I am a little confused about how to make ACX work.

0 Tiger Zhou over 3 years ago in reply to user6200525

TI__Mastermind 18685 points

Typically, we set ACOC threshold lower than ACX.

0 user6200525 over 3 years ago in reply to Tiger Zhou

Prodigy 20 points

Hi Tiger，

Is it the same protected behavior between ACOC and ACX?

If the input current doesn't reach ACOC threshold,the ACX function will be disabled. Do I understan correctly?

0 Tiger Zhou over 3 years ago in reply to user6200525

TI__Mastermind 18685 points

ACOC and ACX are two independent protections. I don't quite understand how you test them. Could you describe in more details?

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BQ25713: BQ25713: what is the difference with ACOC and ACx