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BQ24170: Vref High

Part Number: BQ24170

Hello

Charging is being carried out using BQ24170.

The charging is using USB C type, and it is designed to be red when charging, and the Green LED lights up when charging is complete.

However, there is a problem that the LED lights up even though it is not charged.

I would appreciate it if you could let me know what the problem is with the Vref being printed high even though it is not charged.

I'm uploading additional circuit diagrams and videos for you.

Please check it quickly.

  • Hello,

    I cannot see the LEDs because the video is too bright. First, can you check the output of the STAT pin for each case? I want to verify the behavior is correct when charging and not charging. Second, can you capture the outputs of both BJT circuits when the charger is charging and not charging?

    Also to clarify, VREF does not change its voltage depending on the charger status. The STAT pin connects to GND or floats depending on the charger status.

    Thanks,

    Mike Emanuel

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