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BQ78350: BQ78350+bq76940+bq76200, LED1~LED5 do not blink during the charging process

user5811580
Intellectual 700 points
Part Number: BQ78350

The configuration of LEDS is listed as below:

LCDEN=0

LEDMODE=1

LEDCHG=1

LEDRCA=1

LEDR=1

LED FLASH PERIOD=10240

LED BLINK PERIOD=10240

LED DELAY=100

LED HOLD TIME=4s

LED Thresh1=0%

LED Thresh2=20%

LED Thresh3=40%

LED Thresh4=60%

LED Thresh5=80%

During the charging process, LED1~LED5 do not blink at all.

Besides, the charging current is 2A.

However,LED1~LED5 will be on for several seconds during the boot process.

What's the reason?

In the end, Battery Status[RCA]=0

  • 0
    TI__Prodigy 680 points
    Hi,
    Our team is currently enjoying the Thanksgiving break and will come back to you when we return, during the week of November 26th.
  • 0 in reply to bdefar
    TI__Guru* 81035 points
    Hi Wu,

    Have you seen the section about configuring the LED display in the 'Using the BQ78350 Application Report'? www.ti.com/.../slua924.pdf
    This report states that 'Once all of the appropriate LEDs are ON, the will turn OFF all at once after the LED Hold Time completes'. What is the SOC value when you start the charging process? Are you going through a full charge from empty to full?

    It might be good to try changing LEDR to '0' and LEDRCA to '0' to see if the behavior changes.

    Regards,
    Matt