BQ25606: JETIA Function test

Kami Huang60

Part Number: BQ25606

Dear Sir/Ms.

My customer tested the function of Charger JEITA. The ambient temperature is set at 48C. According to SPEC, the charging voltage will drop to 4.1V.
The actual voltage measured by the customer (as shown in the graph below) is about 4.05V, is this reasonable?

Does 4.1V have an error value? What is the error?

The customer put three BQ25606 circuit boards in the same temperature control furnace. So there will be three curves.
JEITA Charge measured battery voltage:

Best Regards,

Kami Huang

over 5 years ago

0 Ning T over 5 years ago

TI__Guru 57541 points

Kami,

Where did your customer measure the battery voltage?

Thanks,

Ning.

0 andy lin over 5 years ago in reply to Ning T

Prodigy 10 points

Ning :

Direct measurement of battery voltage (Vbat + & Vbat-)

0 Ning T over 5 years ago in reply to andy lin

TI__Guru 57541 points

Kami,

The battery voltage should be measured at VBAT pin of the IC, but not at the battery pack. Please re-take the data and double-check.

Thanks,

Ning.

0 Kami Huang60 over 5 years ago in reply to Ning T

Genius 3830 points

Hello Ning,

The actual measurement of VBAT Pin is 4.057V.

Another question is the temperature mentioned below in JEITA Charge, is it the battery temperature, or the charge ic temperature ? I remember the battery temperature, is my knowledge correct?

Best Regards,

Kami Huang

0 Ning T over 5 years ago in reply to Kami Huang60

TI__Guru 57541 points

Kami,

JEITA function is for battery temperature. The device only has VBATREG_ACC specs for VBAT = 4.208 V or VBAT = 4.352 or VBAT = 4.4 V.

Thanks,

Ning.

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BQ25606: JETIA Function test