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  • RE: BQ76942: Programming a BQ76942 on a custom PCA with BQ76942EVM and BQstudio

    Hello Alexis: I'm still having an issue with communicating to the bq76942 on my custom PCA using bqStudio. I have tried several of the TI's suggestions and still get address 0xAA. BQ76942 is the only part on the bus. I am able to communicate to…

  • RE: BQ76942: BQ76942 Stops Working - Possible Capacitor Voltage Issue?

    Hello, Our engineers are out of office and will get back to you next week. Best Regards, Luis Hernandez Salomon

  • BQ76942: BQ76942 can not update data anymore since each cell voltage reaches a threshold

    Part Number: BQ76942 Tool/software: I have problem with BQ76942 circuit with application for 9 cells pin, right now VC10, I tied to VC9 for this application and I use voltage divider to create a pack pin by 9x1,5 kOhm resistor. One more thing, I use external…

  • BQ76942: BQ7694202 I2C configuration

    Part Number: BQ76942 Tool/software: Hi There, I am wanting to clarify what Comm Type configuration the BQ7694202 is set to by default. Table 3-2 in the TRM states that is I2C with CRC, but does not specify whether that is equivalent to Comm Type 0x11…

  • BQ76942: I2C with CRC and timeout

    Part Number: BQ76942 Tool/software: Hi There, We have been having a couple of issues with the I2C communications on the BQ76942 device. Firstly - we sometimes get garbled messages, or failed reads (Both with out host processor, and the EVM2400). This…

  • BQ76942: Bq7694204 SPI communication Issue and output voltage drop

    Part Number: BQ76942 Tool/software: Hello, We are using the BQ7694204 in an SPI configuration with an STM32 microcontroller for communication. The issue we are facing is as follows: Voltage Drop Under Load: The output voltage is 26V when no load…

  • BQ76942: Communication/Reset Issue

    Part Number: BQ76942 Tool/software: If the MCU and the I2C pullups are powered on before the BQ, everything works just fine. But in our current design, normally the BQ is woken first and the voltage domain that powers the MCU and I2C pullups is only supplied…

  • BQ77216: Using with 10 cells and paired with the BQ76942

    Part Number: BQ77216 Other Parts Discussed in Thread: BQ76942 , , BQ76940 , Tool/software: Hi, I'm trying to use the BQ77216 along with a BQ76942 on a 10S battery pack. According to the BQ77216 datasheet "When pairing with the BQ769x2 or BQ76940 devices…

  • BQ76942EVM: BQ76942 I2C Communication Droping

    Part Number: BQ76942EVM Other Parts Discussed in Thread: BQ76942 Tool/software: Hello, I want to use the BQ76942 AFE IC in my project. I previously purchased the BQ76942 EVM board, and I have successfully established I2C communication with the AFE. I…

  • BQ76942: Confusion In Instructions for Writing Security Keys -- Technical Reference Manual

    Part Number: BQ76942 Tool/software: In order to write the security keys to the device, the Technical Reference Manual says to: 1. Write 0x35 and 0x00 to 0x3E and 0x3F. 2. Write the data in big endian format to the transfer buffer at 0x40–0x47. 3…

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