bms/balance_fet.kicad_sch

(kicad_sch (version 20211123) (generator eeschema)

  (uuid 8248ced2-762e-4d8b-b139-b0f3df975421)

  (paper "A4")

  (title_block
    (title "Blance FET")
    (date "2022-10-30")
    (rev "Rev 0")
    (company "QTech BMS Dept")
  )

  (lib_symbols
    (symbol "Device:D_Zener" (pin_numbers hide) (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
      (property "Reference" "D" (id 0) (at 0 2.54 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "D_Zener" (id 1) (at 0 -2.54 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (id 2) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (id 3) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "diode" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Zener diode" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "TO-???* *_Diode_* *SingleDiode* D_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "D_Zener_0_1"
        (polyline
          (pts
            (xy 1.27 0)
            (xy -1.27 0)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -1.27 -1.27)
            (xy -1.27 1.27)
            (xy -0.762 1.27)
          )
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 1.27 -1.27)
            (xy 1.27 1.27)
            (xy -1.27 0)
            (xy 1.27 -1.27)
          )
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
      )
      (symbol "D_Zener_1_1"
        (pin passive line (at -3.81 0 0) (length 2.54)
          (name "K" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 3.81 0 180) (length 2.54)
          (name "A" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Device:Q_NMOS_DGS" (pin_names (offset 0) hide) (in_bom yes) (on_board yes)
      (property "Reference" "Q" (id 0) (at 5.08 1.27 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Value" "Q_NMOS_DGS" (id 1) (at 5.08 -1.27 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Footprint" "" (id 2) (at 5.08 2.54 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (id 3) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "transistor NMOS N-MOS N-MOSFET" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "N-MOSFET transistor, drain/gate/source" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "Q_NMOS_DGS_0_1"
        (polyline
          (pts
            (xy 0.254 0)
            (xy -2.54 0)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 0.254 1.905)
            (xy 0.254 -1.905)
          )
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 0.762 -1.27)
            (xy 0.762 -2.286)
          )
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 0.762 0.508)
            (xy 0.762 -0.508)
          )
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 0.762 2.286)
            (xy 0.762 1.27)
          )
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 2.54 2.54)
            (xy 2.54 1.778)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 2.54 -2.54)
            (xy 2.54 0)
            (xy 0.762 0)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 0.762 -1.778)
            (xy 3.302 -1.778)
            (xy 3.302 1.778)
            (xy 0.762 1.778)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 1.016 0)
            (xy 2.032 0.381)
            (xy 2.032 -0.381)
            (xy 1.016 0)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type outline))
        )
        (polyline
          (pts
            (xy 2.794 0.508)
            (xy 2.921 0.381)
            (xy 3.683 0.381)
            (xy 3.81 0.254)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 3.302 0.381)
            (xy 2.921 -0.254)
            (xy 3.683 -0.254)
            (xy 3.302 0.381)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (circle (center 1.651 0) (radius 2.794)
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (circle (center 2.54 -1.778) (radius 0.254)
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type outline))
        )
        (circle (center 2.54 1.778) (radius 0.254)
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type outline))
        )
      )
      (symbol "Q_NMOS_DGS_1_1"
        (pin passive line (at 2.54 5.08 270) (length 2.54)
          (name "D" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin input line (at -5.08 0 0) (length 2.54)
          (name "G" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 2.54 -5.08 90) (length 2.54)
          (name "S" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Device:R" (pin_numbers hide) (pin_names (offset 0)) (in_bom yes) (on_board yes)
      (property "Reference" "R" (id 0) (at 2.032 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "R" (id 1) (at 0 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (id 2) (at -1.778 0 90)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (id 3) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "R res resistor" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Resistor" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "R_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "R_0_1"
        (rectangle (start -1.016 -2.54) (end 1.016 2.54)
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
      )
      (symbol "R_1_1"
        (pin passive line (at 0 3.81 270) (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 0 -3.81 90) (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
  )

  (junction (at 132.08 114.3) (diameter 0) (color 0 0 0 0)
    (uuid 0df70f4a-9bb0-46e7-bc82-0f48d2a6c68f)
  )
  (junction (at 144.78 114.3) (diameter 0) (color 0 0 0 0)
    (uuid 160576a2-14cc-49ae-8069-fec1065c2304)
  )
  (junction (at 144.78 99.06) (diameter 0) (color 0 0 0 0)
    (uuid ca1c61f6-3d6c-4d61-bb72-f986f078542a)
  )
  (junction (at 162.56 114.3) (diameter 0) (color 0 0 0 0)
    (uuid fb91034e-bef7-4a90-9404-ead201b4ddeb)
  )

  (wire (pts (xy 132.08 114.3) (xy 144.78 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 0eed1921-6c6f-4427-864c-f79c4da006fc)
  )
  (wire (pts (xy 144.78 99.06) (xy 144.78 102.87))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 23aac895-4076-4b68-a7fa-811990e6a1ef)
  )
  (wire (pts (xy 132.08 104.14) (xy 132.08 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 2d3a7e67-ff0a-4232-8cbe-32e84dd0a48e)
  )
  (wire (pts (xy 132.08 88.9) (xy 128.27 88.9))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 4befb5c0-0b5d-4bec-9479-f8388058f71c)
  )
  (wire (pts (xy 162.56 114.3) (xy 167.64 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 533ff86f-55de-40dc-9799-bde5902d752b)
  )
  (wire (pts (xy 162.56 99.06) (xy 162.56 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 6225cf64-c9af-4119-83d8-c73b574c0682)
  )
  (wire (pts (xy 116.84 114.3) (xy 132.08 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 7917b04f-8b73-4672-bad4-53dccad04be9)
  )
  (wire (pts (xy 116.84 88.9) (xy 120.65 88.9))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 9cc1095c-4bc1-44e3-ba41-42e2845ab304)
  )
  (wire (pts (xy 132.08 88.9) (xy 132.08 93.98))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 9e165893-d868-4e76-95c6-26f68ff70572)
  )
  (wire (pts (xy 139.7 99.06) (xy 144.78 99.06))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid ce14768e-ad9e-4e43-aceb-54817c20b394)
  )
  (wire (pts (xy 144.78 114.3) (xy 151.13 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid ce491c90-328f-4443-a014-e4465c5d0b20)
  )
  (wire (pts (xy 158.75 99.06) (xy 162.56 99.06))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid d79a27a1-d838-4db3-a426-7a22968f51b8)
  )
  (wire (pts (xy 144.78 99.06) (xy 151.13 99.06))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid e5e8fe5d-7f3c-4bb4-953e-46cd5fedf549)
  )
  (wire (pts (xy 158.75 114.3) (xy 162.56 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid eb856ea1-883a-44b7-ac57-7ba5fff75ab1)
  )
  (wire (pts (xy 144.78 110.49) (xy 144.78 114.3))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid f77d9ba1-6c51-4d68-b6c1-e1293e4eeda2)
  )

  (text "threshold voltage\nless than 1/2 cell voltage\nTop 10 page 7"
    (at 140.97 92.71 0)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid fe4cf80e-a6dd-47b1-a220-ae7f46ef0111)
  )

  (hierarchical_label "CELL-" (shape input) (at 116.84 114.3 180)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 13c979ce-f701-4898-b0ac-ddb983df9518)
  )
  (hierarchical_label "VCn" (shape output) (at 167.64 114.3 0)
    (effects (font (size 1.27 1.27)) (justify left))
    (uuid 3ec3d6e7-53a1-4962-b9b9-24d224e59f80)
  )
  (hierarchical_label "CELL+" (shape input) (at 116.84 88.9 180)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 98d5508d-468b-4ded-91de-a78674fe9650)
  )

  (symbol (lib_id "Device:Q_NMOS_DGS") (at 134.62 99.06 0) (mirror y) (unit 1)
    (in_bom yes) (on_board yes)
    (uuid 334f406b-8758-4460-adb9-9e49dd125015)
    (property "Reference" "Q5" (id 0) (at 129.4131 98.2253 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "Q_NMOS_DGS" (id 1) (at 129.4131 100.7622 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "Package_TO_SOT_SMD:SOT-23" (id 2) (at 129.54 96.52 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 134.62 99.06 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Src_Value" "bal_fet" (id 4) (at 134.62 99.06 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 20e34287-2d20-4e31-a855-fac33cd3ed98))
    (pin "2" (uuid 40bfedb5-738b-412a-92e6-2856a32581a8))
    (pin "3" (uuid d3440468-7232-4bdb-a94e-250d27cf7eef))
  )

  (symbol (lib_id "Device:R") (at 154.94 114.3 90) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid 5b92f9b3-b0bc-44a9-a1cc-534cd26581b8)
    (property "Reference" "R44" (id 0) (at 154.94 109.5842 90))
    (property "Value" "1k" (id 1) (at 154.94 112.1211 90))
    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 154.94 116.078 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 154.94 114.3 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Src_Value" "R_cn" (id 4) (at 154.94 114.3 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Src_Page" "20" (id 5) (at 154.94 114.3 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid c3e9b49a-295f-4f62-bc5c-be081a5140f2))
    (pin "2" (uuid 05aefc4d-7462-4ab4-872d-212506d934b3))
  )

  (symbol (lib_id "Device:R") (at 154.94 99.06 90) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid c453db07-53e6-49fb-8235-5ad06919eab7)
    (property "Reference" "R31" (id 0) (at 154.94 94.3442 90))
    (property "Value" "10k" (id 1) (at 154.94 96.8811 90))
    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 154.94 100.838 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 154.94 99.06 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Src_Value" "R_cn" (id 4) (at 154.94 99.06 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Src_Page" "20" (id 5) (at 154.94 99.06 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 8079c2f1-d740-44ca-a52a-64278d5864e5))
    (pin "2" (uuid 52e72e7f-c437-48af-9b94-b647918d9e3f))
  )

  (symbol (lib_id "Device:D_Zener") (at 144.78 106.68 270) (unit 1)
    (in_bom yes) (on_board yes)
    (uuid ce66ee7c-0ad2-4c3b-88ce-ccae93ebdad2)
    (property "Reference" "D19" (id 0) (at 146.812 105.8453 90)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "5.6v" (id 1) (at 146.812 108.3822 90)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "" (id 2) (at 144.78 106.68 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 144.78 106.68 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 9dfd99d7-4cf0-447b-adf7-d543e9876def))
    (pin "2" (uuid ca7c7a59-f181-4dbd-9f40-a1533759278e))
  )

  (symbol (lib_id "Device:R") (at 124.46 88.9 90) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid fa56df0f-db1e-4458-ae4a-f7a171d13f2c)
    (property "Reference" "R42" (id 0) (at 124.46 84.1842 90))
    (property "Value" "43" (id 1) (at 124.46 86.7211 90))
    (property "Footprint" "Resistor_SMD:R_1210_3225Metric" (id 2) (at 124.46 90.678 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 124.46 88.9 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Src_Value" "R_bal-n" (id 4) (at 124.46 88.9 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 50ec9964-4d1f-4c4c-a36d-4d1b80411f3f))
    (pin "2" (uuid 93d75fa2-11f4-460b-9007-d8a181952258))
  )
)