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  • BQ25887: BQ25887 Circuit Design: STAT pin behavior, REGN voltage drop, and switching issues (No charging)

    TI Thinks Resolved
    Part Number: BQ25887 Other Parts Discussed in Thread: EV2400 Hi all, The attached image shows my schematic design for the BQ25887. My name is York. This is my first time posting a question here, so please bear with me if I miss any details or conventions…

  • BQ25887: BQ25887: converter aborts 30-50 us after start-up with REG11 bit 3 (SNS_SHORT), latches HIZ after 7 retries; EVM charges fine

    Part Number: BQ25887 Hello I am making a custom 2-layer board (maybe need to be changed to a 4 layer, later discovering), BQ25887RGER standalone (PSEL = GND, CD = GND), 2S Li-ion, emulated midpoint (gated 5.1k/5.1k 0.1% divider from REGN). The board…

  • BQ25887: BQ25887 enters HIZ mode (EN_HIZ self-sets) and will not charge — Power Good Status drops repeatedly after adapter detection

    Part Number: BQ25887 Other Parts Discussed in Thread: TPS566242 , BQSTUDIO I'm running a BQ25887 as a 2S charger, controlled over I²C from a Raspberry Pi (Linux + smbus2). When I plug in the adapter, the chip detects the source correctly and VBUS measures…

  • BQ25887: Leakage through CBSET and MID

    Part Number: BQ25887 Hi team, On the BQ25887, what is the leakage current through CBSET and MID? Datasheet calls out 15uA of bias current through MID, is that all? My customer will not be using cell balancing, so wanted to know what to expect in…

  • BQ25887: BQ25887 fast charging on 3 Amp , register settings , not able to do the fast charging .

    TI Thinks Resolved
    Part Number: BQ25887 Tool/software: I am using this BMS for our glucometer product with two cells. as per the datasheet, it should charge at 3Amp but as per my testing, I cannot charge the batteries on that current, and also when I check the CRG_STAT…

  • BQ25887: Looking for chip that supports power path similar to BQ25887

    TI Thinks Resolved
    Part Number: BQ25887 Other Parts Discussed in Thread: BQ25883 Tool/software: Hi, Is there a chip similar in form factor to the BQ25887 that supports both balancing and power path management? My requirements are support for 2s, 5V input and configurable…

  • BQ25887: Battery unbalancing and low voltage protection.

    TI Thinks Resolved
    Part Number: BQ25887 Other Parts Discussed in Thread: BQ25883 Hello, I've been using the BQ25887 for about a year in one of our prototypes. This is a small medical device that has a 320mah 2S lipo. We are having issues with the battery draining and…

  • BQ25887: BQ25887 balancer 5 click module not working

    TI Thinks Resolved
    Part Number: BQ25887 Tool/software: I am attempting to utilize the balancer 5 click( Balancer 5 Click | Mikroe ) which utilizes the BQ25887 in one of my projects. I am using it as a breakout board with my Arduino. The Arduino has successfully identified…
    • Answered

  • BQ25887: Can't enable ADC without VBUS

    Resolved
    Part Number: BQ25887 Other Parts Discussed in Thread: BQSTUDIO , Tool/software: Hi Team, i am testing BQ25887EVM with BQSTUDIO. With 5V input, i set ADC at continuous mode with15b sample rate, then i enable ADC, the bqstudio can read both VBUS and…
    • Resolved

  • BQ25887: BQ25887RGER charger not charging battery - REGN is at 0 volts

    TI Thinks Resolved
    Part Number: BQ25887 Hello, We have designed and built the PCB for a 2-cell, 7.4V Lithium ion / LiPo battery charger, based on the BQ25887EVM design. We have followed the PCB design guidelines as recommended in the documents. However, after assembling…

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