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  • BQ24070: The chip thinks there is a battery connected and in fast charge mode (According to STAT bits) even when no battery is connected. More insights .... and ISET1 may be damaged?

    Part Number: BQ24070 Tool/software: Hi Garrett, This is a follow up to my previous thread. I still have the original board with the fault. Now we are bringing up pre-production units and and now I've seen this problem appear in one of those...so a red…
    • Answered

  • BQ24070: The chip thinks there is a battery connected and in fast charge mode (According to STAT bits) even when no battery is connected. Am I missing something?

    Resolved
    Part Number: BQ24070 Tool/software: Hello! This design has been fully tested and now we are in pre-production mode. One particular board had the charger working, but something changed and I'm trying to exhaust all possibilities before concluding that…
    • Resolved
    • Answered

  • BQ24070: Charging chip not charging...

    Resolved
    Part Number: BQ24070 We're using the above design in our design. During load testing I discovered that the battery wasnt actually charging. Stat1/2 PG is read by a micro controller and some GPIO based LEDs are currently relaying the status during…
    • Resolved
    • Answered

  • BQ24070: Detailed Operation of Current Limiting, DPPM

    Resolved
    Part Number: BQ24070 Hi again Garrett, I have a question about DPPM as it relates to current limiting and prevention of damage to the BQ24070. In our design, the battery is a single 18650 Li-Ion cell and the chip is powered by a 5V output AC to DC wall…
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    • Answered

  • BQ24070: Question re polarity protection on BAT Pins

    Resolved
    Part Number: BQ24070 Hello! We're planning to use the BQ24070 to charge a single 18650 Li-ion battery...As you know these batteries look like an overgrown AA cell...the battery in the product can be replaced by the end-user. We are going to use a 5V…
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  • BQ24070: Introduced a switch between the OUT pins and the load which is time delayed from the startup of VIN; How long is enough?

    Resolved
    Part Number: BQ24070 Hi Garrett, One more question! For the case of: - no battery present. - there is a load connected to the OUT pins. - the device is powered off. - 10nF cap on DPPM As we've discussed, when the 5V is turned on to VIN, the BQ24070 will think…
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  • BQ24070: Is not fast charging

    Part Number: BQ24070 I built the circuit you see in the schematic Input is 5.25V using the power supply, output voltage is 4.15 V and connected to another PCB I designed. Vbat is 4.05 V . When I connect a Li-Ion battery to this circuit, I see that…
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  • BQ24070: help with device regulation design.

    Resolved
    Part Number: BQ24070 Other Parts Discussed in Thread: TPS630250 , BQ25180 , BQ24079 , LMR51430 , BQ25181 , BQ25180EVM Hello Texas Instruments community! I am redesigning a device and would like your help. These are the requirements: 10Vdc – 30 Vdc input voltage…
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  • BQ24070: Output voltage back to input pin with BQ in parallel and unbalanced batteries

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    Part Number: BQ24070 To gain additional energy capacity, we designed a board with 2 BQ24070. Each device is linked to the same voltage source (VIN1=VIN2), the same output (VOUT1=VOUT2) but manage its own battery (see simplified schematic below). We noticed…
    • Resolved

  • BQ24070: question about possible current problem

    Part Number: BQ24070 Other Parts Discussed in Thread: TL1963A greetings to the experts of Texas Instruments and members of the forum. The power supply of our tracking device is designed as follows: the processor (the system load) is made up of a wifi…

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