BQ25713: Battery not charging,

Part Number: BQ25713

This is below code for battery to charged attached, kindly let me know any changes needed here
 
 
//---------------------------------
  // 1. EXIT LOW POWER / ENABLE CONTROL
  //---------------------------------
  writeWord(0x00, 0x670E);
  delay(100);

  //---------------------------------
  // 2. INPUT CURRENT LIMIT = 2A
  //---------------------------------
  writeWord(0x0E, 0x3C00);//300mA
  delay(100);

  writeWord(0x0A, 0x1AC0);//11V
  delay(100);

    //---------------------------------
  // 6. CHARGE CURRENT = 2A
  //---------------------------------
  writeWord(0x02, 0x0600);
  delay(100);
 
  //---------------------------------
  // 5. CHARGE VOLTAGE (3S = 12.6V)
  //---------------------------------
  writeWord(0x04, 0x3138);
  delay(100);
 //---------------------------------
  // 4. MIN SYSTEM VOLTAGE
  //---------------------------------
  writeWord(0x0C, 0x2400); //9V
  delay(100);


  //---------------------------------
  // 7. ENABLE CHARGING
  //---------------------------------
uint16_t reg00 = readWord(0x00);

reg00 &= ~(1 << 0);   // clear CHRG_INHIBIT bit

writeWord(0x00, reg00);
  • Hello Vinay,

    are you using an EVM or custom board?

    It would be good to provide a register dump to determine why charging is not working.

    Best Regards,

    Christian

  • Hi christian,

    using custom board, only wrote these register values

  • Hello,

    Thanks for being patient with this. Christian is out of office right now. We will get back to you by Monday.

    Best Regards,
    Ethan Galloway

  • Hello Vinay,

    only wrote these register values

    i understand, but it would be good to provide a register dump, so I can see the charge status registers to see why charging is not working.

    Best Regards,

    Christian

  • Hi, Christian 

    Due to some personal works got delay in response, 

    I am attaching the read register values kindly check once let me know any changes need to be made in my code

    ------ BQ25713 REGISTER DUMP ------
    Reg 0x00 : 0x680E
    Reg 0x01 : 0x0068
    Reg 0x02 : 0x0200
    Reg 0x03 : 0x3802
    Reg 0x04 : 0x3138
    Reg 0x05 : 0x0031
    Reg 0x06 : 0x0000
    Reg 0x07 : 0x0000
    Reg 0x08 : 0x0000
    Reg 0x09 : 0x8000
    Reg 0x0A : 0x2080
    Reg 0x0B : 0x0020
    Reg 0x0C : 0x2D00
    Reg 0x0D : 0x002D
    Reg 0x0E : 0x4100
    Reg 0x0F : 0xFF41
    Reg 0x10 : 0xFFFF
    Reg 0x11 : 0xFFFF
    Reg 0x12 : 0xFFFF
    Reg 0x13 : 0xFFFF
    Reg 0x14 : 0xFFFF
    Reg 0x15 : 0xFFFF
    Reg 0x16 : 0xFFFF
    Reg 0x17 : 0xFFFF
    Reg 0x18 : 0xFFFF
    Reg 0x19 : 0xFFFF
    Reg 0x1A : 0xFFFF
    Reg 0x1B : 0xFFFF
    Reg 0x1C : 0xFFFF
    Reg 0x1D : 0xFFFF
    Reg 0x1E : 0xFFFF
    Reg 0x1F : 0x00FF
    Reg 0x20 : 0x8200
    Reg 0x21 : 0x0082
    Reg 0x22 : 0xA800
    Reg 0x23 : 0x00A8
    Reg 0x24 : 0x4100
    Reg 0x25 : 0x0041
    Reg 0x26 : 0x8200
    Reg 0x27 : 0x0082
    Reg 0x28 : 0x0000
    Reg 0x29 : 0x0000
    Reg 0x2A : 0x0000
    Reg 0x2B : 0x0000
    Reg 0x2C : 0x0000
    Reg 0x2D : 0x4000
    Reg 0x2E : 0x8840
    Reg 0x2F : 0x1088
    Reg 0x30 : 0x0210
    Reg 0x31 : 0xB702
    Reg 0x32 : 0x02B7
    Reg 0x33 : 0x3002
    Reg 0x34 : 0x0030
    Reg 0x35 : 0x6500
    Reg 0x36 : 0x4A65
    Reg 0x37 : 0xA04A
    Reg 0x38 : 0x81A0
    Reg 0x39 : 0x0081
    Reg 0x3A : 0x2000
    Reg 0x3B : 0xFF20
    Reg 0x3C : 0x04FF
    Reg 0x3D : 0xFF04
    Reg 0x3E : 0xFFFF
    Reg 0x3F : 0xFFFF
    -----------------------------------

  • Hello Vinay,

    Can you confirm the device is not able to charge at all?

    The status registers indicate the device is pre-charge, is it possible the charge current is just low? Can you provide a scope capture?

    Can you also provide your schematic?

  • ------ BQ25713 REGISTER DUMP ------
    Reg 0x00 : 0x680E
    Reg 0x01 : 0x0068
    Reg 0x02 : 0x0000
    Reg 0x03 : 0x3800
    Reg 0x04 : 0x3138
    Reg 0x05 : 0x0031
    Reg 0x06 : 0x0000
    Reg 0x07 : 0x0000
    Reg 0x08 : 0x0000
    Reg 0x09 : 0x8000
    Reg 0x0A : 0x1B80
    Reg 0x0B : 0x001B
    Reg 0x0C : 0x2D00
    Reg 0x0D : 0x002D
    Reg 0x0E : 0x4100
    Reg 0x0F : 0xFF41
    Reg 0x10 : 0xFFFF
    Reg 0x11 : 0xFFFF
    Reg 0x12 : 0xFFFF
    Reg 0x13 : 0xFFFF
    Reg 0x14 : 0xFFFF
    Reg 0x15 : 0xFFFF
    Reg 0x16 : 0xFFFF
    Reg 0x17 : 0xFFFF
    Reg 0x18 : 0xFFFF
    Reg 0x19 : 0xFFFF
    Reg 0x1A : 0xFFFF
    Reg 0x1B : 0xFFFF
    Reg 0x1C : 0xFFFF
    Reg 0x1D : 0xFFFF
    Reg 0x1E : 0xFFFF
    Reg 0x1F : 0x00FF
    Reg 0x20 : 0x8000
    Reg 0x21 : 0x8080
    Reg 0x22 : 0xA880
    Reg 0x23 : 0x00A8
    Reg 0x24 : 0x4100
    Reg 0x25 : 0x0041
    Reg 0x26 : 0x8200
    Reg 0x27 : 0x0082
    Reg 0x28 : 0x0000
    Reg 0x29 : 0x0000
    Reg 0x2A : 0x0000
    Reg 0x2B : 0x0000
    Reg 0x2C : 0x0000
    Reg 0x2D : 0x4000
    Reg 0x2E : 0x8840
    Reg 0x2F : 0x1088
    Reg 0x30 : 0x0210
    Reg 0x31 : 0xB702
    Reg 0x32 : 0x02B7
    Reg 0x33 : 0x3002
    Reg 0x34 : 0x0030
    Reg 0x35 : 0x6500
    Reg 0x36 : 0x4A65
    Reg 0x37 : 0xA04A
    Reg 0x38 : 0x81A0
    Reg 0x39 : 0x0081
    Reg 0x3A : 0x2000
    Reg 0x3B : 0xFF20
    Reg 0x3C : 0x04FF
    Reg 0x3D : 0xFF04
    Reg 0x3E : 0xFFFF
    Reg 0x3F : 0xFFFF
    -----------------------------------
    

    Hi christian, i have attached my schematic and register values, i am using batter 3s2p  11.1V 5.2AH..

  • Hello Vinay,

    Will you confirm what the issue is?Is the device not charging?

    In the register dump you provided, the charge current is set to 0A