Answered

• BQ25638: BQ25638 SYS Rail Droop During VIN Unplug: Buck-to-BATFET Transition Timing and SYS Capacitance Guidance

  

  Liam Hunte

  Resolved

  Part Number: BQ25638 We are designing a system using the BQ25638 where the SYS rail drives an approximately 4A continuous load. During a VIN unplug event, the device must transition from buck regulation to BATFET support of SYS, and we would like guidance…

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum

• BQ25638: BQ25638 FAULT_Status issue

  

  q h

  TI Thinks Resolved

  Part Number: BQ25638 BQ25638.txt Hi ti tearm After the BQ25638 triggers the errors in REG0x22 and REG0x25, how should these fault flags (REG0x22_FAULT_Status, REG0x25_FAULT_Flag) be cleared? Currently, our MCU needs to rewrite all registers to clear…

  • 8 months ago
  • Power management
  • Power management forum

• BQ25638: BQ25638 ESD issue

  

  q h

  Part Number: BQ25638 HI As shown in the figure, we have a product that uses the BQ25638. During electrostatic discharge (ESD) testing between SYS and GND, the connection between SYS and BAT always disconnects momentarily and then reconnects. May I ask…

  • 9 months ago
  • Power management
  • Power management forum
Answered

• BQ25638: Questions on battery charging profile for charger IC BQ25638

  

  Kaihang Zhou

  Resolved

  Part Number: BQ25638 Tool/software: Hi, I am recommending the charger IC BQ25638 to my customer. I noticed a difference about battery charging profile on the datasheet between TI’s and MPS’s. On the MPS’s, I find there is a step down on system volt…

  • Resolved

  • over 1 year ago
  • Power management
  • Power management forum
Answered

• BQ25638: Settings via I2C

  

  Dice-K

  Resolved

  Part Number: BQ25638 Hi support team, Is it possible to change the settings of the BQ25638 via I2C while it is operating? Is it not possible to change the default values ​​themselves? Regards, Dice-K

  • Resolved

  • 4 months ago
  • Power management
  • Power management forum
Answered

• BQ25638: Do we have c-code driver?

  

  Paul Yeh

  Resolved

  Part Number: BQ25638 Hi team, My customer is asking Would you help us to check BQ25638 driver is available? Thanks

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum

• BQ25638EVM: Need BQ25638 BQZ file

  

  Rez Ameli

  TI Thinks Resolved

  Part Number: BQ25638EVM Other Parts Discussed in Thread: BQSTUDIO , , BQ25638 Hi Team, My customer is trying to evaluate BQ25638EVM. BQStudio does not list the device and BQ25638 BQZ file is not available online for download. can you please share the…

  • 3 months ago
  • Power management
  • Power management forum

• BQ25638: IBAT_ADC Measures 0 amps at 15V input

  

  Joe Paolino

  TI Thinks Resolved

  Part Number: BQ25638 Other Parts Discussed in Thread: BQ34Z100 , As in the related post, I am also seeing the IBAT_ADC report 0 when I input 15V. Provided below are the registers for the BQ25638 and the relevant registers from the BQ34Z100 read at the…

  • 2 months ago
  • Power management
  • Power management forum
Answered

• BQ25638: SYS pin voltage when /CE is High

  

  Dice-K

  Resolved

  Part Number: BQ25638 Hi support team, When VBUS is 5V, /CE is pulled up to VBUS, and the battery voltage is 0V, what will the SYS pin voltage be? Regards, Dice-K

  • Resolved

  • 4 months ago
  • Power management
  • Power management forum
Answered

• BQ25638: ADC state during ultra low power mode

  

  Joe Paolino

  Resolved

  Part Number: BQ25638 Hello, Searching through the datasheet, I was not able to find if the ADC function is automatically disabled when transitioning from battery only normal mode to ultra low power mode (or shutdown). Is the user required to disable…

  • Resolved

  • 5 months ago
  • Power management
  • Power management forum

Didn't find what you are looking for? Post a new question.