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  • BQ24070: Charging chip not charging...

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    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…
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  • BQ24070: Detailed Operation of Current Limiting, DPPM

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    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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  • BQ24070: Question re polarity protection on BAT Pins

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    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?

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    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.

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    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…
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  • 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…

  • RE: BQ24070: Chip starts heating up and charging status led turns off when ESD is applied

    Hi Torge, That's very interesting, are you able to monitor the voltage waveforms while confectioning? Best Regards, Anthony Pham

  • BQ24070: Timer Fault Still Trickle Charging

    Part Number: BQ24070 We have a unit that is using the BQ24070 charger on it set to charge at 1.5A. We realized we put an incorrect resistor down on the timer set pin so that all of our units were entering a timer fault condition too early. Once we changed…

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