{
 "commit": {
  "sha": "87a86204b07643f9f397ed5c8236c5128b0af11b",
  "date": "2026-09-17T15:59:20+00:00",
  "subject": "fix(hw): use TPS56424x for 5V / 6.1V rails (schematics only)",
  "url": "https://github.com/DLehenbauer/econopet/commit/87a86204b07643f9f397ed5c8236c5128b0af11b",
  "board": "hw/rev-b/mainboard/kicad/Mainboard.kicad_pcb"
 },
 "project": {
  "title": "EconoPET mainboard (rev. B)",
  "repo": "https://github.com/DLehenbauer/econopet",
  "licence": "CC0-1.0"
 },
 "impactDiff": {
  "schema": "nativecad.impactDiff/1",
  "inputs": {
   "before": {
    "format": "kicad_pcb",
    "source": {
     "repo": "https://github.com/DLehenbauer/econopet",
     "sha": "3758715e92a56a33bf51ac3b9407358ca44f9f74",
     "path": "hw/rev-b/mainboard/kicad/Mainboard.kicad_pcb"
    }
   },
   "after": {
    "format": "kicad_pcb",
    "source": {
     "repo": "https://github.com/DLehenbauer/econopet",
     "sha": "87a86204b07643f9f397ed5c8236c5128b0af11b",
     "path": "hw/rev-b/mainboard/kicad/Mainboard.kicad_pcb"
    }
   },
   "optionsSha256": null,
   "engine": null
  },
  "layoutDiff": {
   "schema": "pcbDiff/1",
   "identical": true,
   "tolerances": {
    "posTol": 0.001,
    "rotTol": 0.01,
    "widthTol": 0.0001,
    "drillTol": 0.0001,
    "lengthTol": 0.0001,
    "areaTol": 0.000001,
    "thickTol": 0.000001,
    "routeTol": 0.01,
    "sampleStep": 0.1,
    "minPadOverlap": 0.6
   },
   "summary": {
    "components": {
     "added": 0,
     "removed": 0,
     "renamed": 0,
     "moved": 0,
     "rotated": 0,
     "flipped": 0,
     "footprintChanged": 0,
     "valueChanged": 0
    },
    "nets": {
     "added": 0,
     "removed": 0,
     "renamed": 0,
     "changed": 0,
     "rerouted": 0
    },
    "outlineChanged": false,
    "stackupChanged": false
   },
   "components": {
    "source": "explicit",
    "counts": {
     "a": 303,
     "b": 303
    },
    "added": [],
    "removed": [],
    "renamed": [],
    "moved": [],
    "rotated": [],
    "flipped": [],
    "footprintChanged": [],
    "valueChanged": []
   },
   "nets": {
    "added": [],
    "removed": [],
    "renamed": [],
    "changed": []
   },
   "outline": {
    "changed": false,
    "loops": {
     "a": 10,
     "b": 10
    },
    "bbox": {
     "a": [
      91.1125,
      93.792,
      353.6125,
      189.04025
     ],
     "b": [
      91.1125,
      93.792,
      353.6125,
      189.04025
     ]
    },
    "size": {
     "a": [
      262.5,
      95.24825
     ],
     "b": [
      262.5,
      95.24825
     ]
    },
    "perimeterMm": {
     "a": 566.784480268,
     "b": 566.784480268,
     "delta": 0
    },
    "areaMm2": {
     "a": -7395.204277722,
     "b": -7395.204277722,
     "delta": 0
    },
    "changedLengthMm": {
     "removed": 0,
     "added": 0
    }
   },
   "stackup": {
    "changed": false,
    "added": [],
    "removed": [],
    "modified": [],
    "reordered": false,
    "thickness": null
   },
   "warnings": []
  },
  "bomDiff": {
   "summary": {
    "added": 3,
    "removed": 0,
    "qtyChanged": 3,
    "valueChanged": 20,
    "footprintChanged": 0,
    "mpnChanged": 1,
    "dnpToggled": 1,
    "categoryChanged": 0,
    "total": 28,
    "unchanged": 278
   },
   "added": [
    {
     "kind": "added",
     "category": "SCH",
     "key": "vf:33pf|c_0402_1005metric",
     "part": {
      "value": "33pF",
      "footprint": "Capacitor_SMD:C_0402_1005Metric"
     },
     "qtyTo": 2,
     "refs": [
      "C17"
     ]
    },
    {
     "kind": "added",
     "category": "SCH",
     "key": "vf:5v power|pinheader_1x02_p2.54mm_vertical",
     "part": {
      "value": "5V POWER",
      "footprint": "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical"
     },
     "qtyTo": 1,
     "refs": [
      "J28"
     ]
    },
    {
     "kind": "added",
     "category": "SCH",
     "key": "vf:33k|r_0402_1005metric",
     "part": {
      "value": "33K",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "qtyTo": 1,
     "refs": [
      "R81"
     ]
    }
   ],
   "removed": [],
   "qtyChanged": [
    {
     "kind": "qty-changed",
     "category": "SCH",
     "key": "vf:100n|c_0402_1005metric",
     "part": {
      "value": "100n",
      "footprint": "Capacitor_SMD:C_0402_1005Metric"
     },
     "qtyFrom": 48,
     "qtyTo": 50,
     "refsAdded": [
      "C15",
      "C89"
     ],
     "refsRemoved": [],
     "refs": [
      "C1",
      "C2",
      "C3",
      "C6",
      "C14",
      "C15",
      "C25",
      "C27",
      "C33",
      "C34",
      "C35",
      "C36",
      "C37",
      "C38",
      "C40",
      "C44",
      "C45",
      "C46",
      "C47",
      "C48",
      "C49",
      "C50",
      "C51",
      "C52",
      "C53",
      "C55",
      "C57",
      "C59",
      "C67",
      "C68",
      "C69",
      "C70",
      "C71",
      "C72",
      "C73",
      "C74",
      "C78",
      "C83",
      "C89",
      "C90",
      "C93",
      "C94",
      "C95",
      "C96",
      "C97",
      "C98",
      "C100",
      "C104",
      "C106",
      "C107"
     ]
    },
    {
     "kind": "qty-changed",
     "category": "SCH",
     "key": "vf:2200uf|cp_radial_d12.5mm_p5.00mm_p7.50mm",
     "part": {
      "value": "2200uF",
      "footprint": "EconoPET:CP_Radial_D12.5mm_P5.00mm_P7.50mm"
     },
     "qtyFrom": 1,
     "qtyTo": 1,
     "refsAdded": [
      "C112"
     ],
     "refsRemoved": [],
     "refs": [
      "C112"
     ]
    },
    {
     "kind": "qty-changed",
     "category": "SCH",
     "key": "vf:22k|r_0402_1005metric",
     "part": {
      "value": "22k",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "qtyFrom": 1,
     "qtyTo": 2,
     "refsAdded": [
      "R11"
     ],
     "refsRemoved": [],
     "refs": [
      "R11",
      "R37"
     ]
    }
   ],
   "valueChanged": [
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:10u|c_1206_3216metric",
     "part": {
      "value": "10u",
      "footprint": "Capacitor_SMD:C_1206_3216Metric"
     },
     "from": "47u 10V",
     "to": "10u",
     "refs": [
      "C7",
      "C12",
      "C13"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:100n|c_0603_1608metric",
     "part": {
      "value": "100n",
      "footprint": "Capacitor_SMD:C_0603_1608Metric"
     },
     "from": "10u",
     "to": "100n",
     "refs": [
      "C18"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:22u|c_1206_3216metric",
     "part": {
      "value": "22u",
      "footprint": "Capacitor_SMD:C_1206_3216Metric"
     },
     "from": "47u 10V",
     "to": "22u",
     "refs": [
      "C19"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:33pf|c_0402_1005metric",
     "part": {
      "value": "33pF",
      "footprint": "Capacitor_SMD:C_0402_1005Metric"
     },
     "from": "100p",
     "to": "33pF",
     "refs": [
      "C21"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:22u|c_0402_1005metric",
     "part": {
      "value": "22u",
      "footprint": "Capacitor_SMD:C_0402_1005Metric"
     },
     "from": "10n",
     "to": "22u",
     "refs": [
      "C22"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:22u|c_0402_1005metric",
     "part": {
      "value": "22u",
      "footprint": "Capacitor_SMD:C_0402_1005Metric"
     },
     "from": "220n 16V",
     "to": "22u",
     "refs": [
      "C24"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:4u7 10v|c_0603_1608metric",
     "part": {
      "value": "4u7 10V",
      "footprint": "Capacitor_SMD:C_0603_1608Metric"
     },
     "from": "10u",
     "to": "4u7 10V",
     "refs": [
      "C26"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:100n|c_1206_3216metric",
     "part": {
      "value": "100n",
      "footprint": "Capacitor_SMD:C_1206_3216Metric"
     },
     "from": "47u 10V",
     "to": "100n",
     "refs": [
      "C28"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:22u|c_0402_1005metric",
     "part": {
      "value": "22u",
      "footprint": "Capacitor_SMD:C_0402_1005Metric"
     },
     "from": "1n",
     "to": "22u",
     "refs": [
      "C29"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:4u7 10v|c_1206_3216metric",
     "part": {
      "value": "4u7 10V",
      "footprint": "Capacitor_SMD:C_1206_3216Metric"
     },
     "from": "47u 10V",
     "to": "4u7 10V",
     "refs": [
      "C30"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:15000uf|cp_radial_d12.5mm_p5.00mm_p7.50mm|dnp",
     "part": {
      "value": "15000uF",
      "footprint": "EconoPET:CP_Radial_D12.5mm_P5.00mm_P7.50mm"
     },
     "from": "2200uF",
     "to": "15000uF",
     "refs": [
      "C110"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:1.8uh|ind-smd_l12.5-w12.5",
     "part": {
      "value": "1.8uH",
      "footprint": "JLCPCB:IND-SMD_L12.5-W12.5"
     },
     "from": "22uH",
     "to": "1.8uH",
     "refs": [
      "L1",
      "L2"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:12k|r_0402_1005metric",
     "part": {
      "value": "12k",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "from": "220",
     "to": "12k",
     "refs": [
      "R6"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:2k2|r_0402_1005metric",
     "part": {
      "value": "2k2",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "from": "1k",
     "to": "2k2",
     "refs": [
      "R7"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:120k|r_0402_1005metric",
     "part": {
      "value": "120k",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "from": "1k5",
     "to": "120k",
     "refs": [
      "R8"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:13k|r_0402_1005metric",
     "part": {
      "value": "13k",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "from": "10k",
     "to": "13k",
     "refs": [
      "R9"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:4k7|r_0402_1005metric",
     "part": {
      "value": "4k7",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "from": "220",
     "to": "4k7",
     "refs": [
      "R13"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:330k|r_0402_1005metric",
     "part": {
      "value": "330k",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "from": "10k",
     "to": "330k",
     "refs": [
      "R14",
      "R16"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "vf:68k|r_0402_1005metric",
     "part": {
      "value": "68k",
      "footprint": "Resistor_SMD:R_0402_1005Metric"
     },
     "from": "4k7",
     "to": "68k",
     "refs": [
      "R15"
     ]
    },
    {
     "kind": "value-changed",
     "category": "SCH",
     "key": "mpn:tps564242drlr",
     "part": {
      "value": "TPS564242DRLR",
      "footprint": "EconoPET:TI_SO-PowerPAD-8_ThermalVias",
      "mpn": "TPS564242DRLR",
      "manufacturer": "TI(德州仪器)"
     },
     "from": "TPS5430DDA",
     "to": "TPS564242DRLR",
     "refs": [
      "U4",
      "U6"
     ]
    }
   ],
   "footprintChanged": [],
   "mpnChanged": [
    {
     "kind": "mpn-changed",
     "category": "SCH",
     "key": "mpn:tps564242drlr",
     "part": {
      "value": "TPS564242DRLR",
      "footprint": "EconoPET:TI_SO-PowerPAD-8_ThermalVias",
      "mpn": "TPS564242DRLR",
      "manufacturer": "TI(德州仪器)"
     },
     "to": "TPS564242DRLR",
     "refs": [
      "U4",
      "U6"
     ]
    }
   ],
   "dnpToggled": [
    {
     "kind": "dnp-toggled",
     "category": "SCH",
     "key": "vf:15000uf|cp_radial_d12.5mm_p5.00mm_p7.50mm|dnp",
     "part": {
      "value": "15000uF",
      "footprint": "EconoPET:CP_Radial_D12.5mm_P5.00mm_P7.50mm"
     },
     "from": "fitted",
     "to": "dnp",
     "refs": [
      "C110"
     ]
    }
   ],
   "categoryChanged": [],
   "byCategory": {
    "SCH": {
     "added": 3,
     "qtyChanged": 3,
     "valueChanged": 20,
     "mpnChanged": 1,
     "dnpToggled": 1
    },
    "PCB": {},
    "BOARD_FEATURE": {}
   }
  },
  "impacts": [
   {
    "id": "1571e86c699a1c1e",
    "kind": "bom",
    "ref": "C110",
    "category": "SCH",
    "metric": "dnp",
    "before": "fitted",
    "after": "dnp",
    "delta": null,
    "severity": "info",
    "why": "SCH line 15000uF CP_Radial_D12.5mm_P5.00mm_P7.50mm: C110 dnp toggled (fitted -> dnp).",
    "causes": [
     "bomDiff.dnpToggled[C110]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "4d34f84138e07ca0",
    "kind": "bom",
    "ref": "C110",
    "category": "SCH",
    "metric": "value",
    "before": "2200uF",
    "after": "15000uF",
    "delta": null,
    "severity": "info",
    "why": "SCH line 15000uF CP_Radial_D12.5mm_P5.00mm_P7.50mm: C110 value changed (2200uF -> 15000uF).",
    "causes": [
     "bomDiff.valueChanged[C110]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "56bc92cef2a8a143",
    "kind": "bom",
    "ref": "C112",
    "category": "SCH",
    "metric": "refs",
    "before": "",
    "after": "C112",
    "delta": null,
    "severity": "info",
    "why": "SCH line 2200uF CP_Radial_D12.5mm_P5.00mm_P7.50mm:  -> C112 (same qty 1).",
    "causes": [
     "bomDiff.qtyChanged[C112]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "20404956ad9bf69c",
    "kind": "bom",
    "ref": "C15",
    "refs": [
     "C15",
     "C89"
    ],
    "category": "SCH",
    "metric": "qty",
    "before": 48,
    "after": 50,
    "delta": 2,
    "severity": "info",
    "why": "SCH line 100n C_0402_1005Metric: C15, C89 qty changed (qty 48 -> 50).",
    "causes": [
     "bomDiff.qtyChanged[C15]",
     "bomDiff.qtyChanged[C89]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "8e42aef498b26822",
    "kind": "bom",
    "ref": "C17",
    "category": "SCH",
    "metric": "qty",
    "before": 0,
    "after": 2,
    "delta": 2,
    "severity": "info",
    "why": "SCH line 33pF C_0402_1005Metric: C17 added (qty 0 -> 2).",
    "causes": [
     "bomDiff.added[C17]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "0e2fa99c399acda5",
    "kind": "bom",
    "ref": "C18",
    "category": "SCH",
    "metric": "value",
    "before": "10u",
    "after": "100n",
    "delta": null,
    "severity": "info",
    "why": "SCH line 100n C_0603_1608Metric: C18 value changed (10u -> 100n).",
    "causes": [
     "bomDiff.valueChanged[C18]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "f3c79a4db9987f0c",
    "kind": "bom",
    "ref": "C19",
    "category": "SCH",
    "metric": "value",
    "before": "47u 10V",
    "after": "22u",
    "delta": null,
    "severity": "info",
    "why": "SCH line 22u C_1206_3216Metric: C19 value changed (47u 10V -> 22u).",
    "causes": [
     "bomDiff.valueChanged[C19]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "6f64d3c8cc827239",
    "kind": "bom",
    "ref": "C21",
    "category": "SCH",
    "metric": "value",
    "before": "100p",
    "after": "33pF",
    "delta": null,
    "severity": "info",
    "why": "SCH line 33pF C_0402_1005Metric: C21 value changed (100p -> 33pF).",
    "causes": [
     "bomDiff.valueChanged[C21]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "6ed9aad3ea60a3c2",
    "kind": "bom",
    "ref": "C22",
    "category": "SCH",
    "metric": "value",
    "before": "10n",
    "after": "22u",
    "delta": null,
    "severity": "info",
    "why": "SCH line 22u C_0402_1005Metric: C22 value changed (10n -> 22u).",
    "causes": [
     "bomDiff.valueChanged[C22]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "339b92ed4e03695c",
    "kind": "bom",
    "ref": "C24",
    "category": "SCH",
    "metric": "value",
    "before": "220n 16V",
    "after": "22u",
    "delta": null,
    "severity": "info",
    "why": "SCH line 22u C_0402_1005Metric: C24 value changed (220n 16V -> 22u).",
    "causes": [
     "bomDiff.valueChanged[C24]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "e70df9d7559bc3fe",
    "kind": "bom",
    "ref": "C26",
    "category": "SCH",
    "metric": "value",
    "before": "10u",
    "after": "4u7 10V",
    "delta": null,
    "severity": "info",
    "why": "SCH line 4u7 10V C_0603_1608Metric: C26 value changed (10u -> 4u7 10V).",
    "causes": [
     "bomDiff.valueChanged[C26]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "647336712b876218",
    "kind": "bom",
    "ref": "C28",
    "category": "SCH",
    "metric": "value",
    "before": "47u 10V",
    "after": "100n",
    "delta": null,
    "severity": "info",
    "why": "SCH line 100n C_1206_3216Metric: C28 value changed (47u 10V -> 100n).",
    "causes": [
     "bomDiff.valueChanged[C28]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "1852b3e06e315951",
    "kind": "bom",
    "ref": "C29",
    "category": "SCH",
    "metric": "value",
    "before": "1n",
    "after": "22u",
    "delta": null,
    "severity": "info",
    "why": "SCH line 22u C_0402_1005Metric: C29 value changed (1n -> 22u).",
    "causes": [
     "bomDiff.valueChanged[C29]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "3af878ee571916b3",
    "kind": "bom",
    "ref": "C30",
    "category": "SCH",
    "metric": "value",
    "before": "47u 10V",
    "after": "4u7 10V",
    "delta": null,
    "severity": "info",
    "why": "SCH line 4u7 10V C_1206_3216Metric: C30 value changed (47u 10V -> 4u7 10V).",
    "causes": [
     "bomDiff.valueChanged[C30]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "0e5c11c8fc62ab0a",
    "kind": "bom",
    "ref": "C7",
    "refs": [
     "C7",
     "C12",
     "C13"
    ],
    "category": "SCH",
    "metric": "value",
    "before": "47u 10V",
    "after": "10u",
    "delta": null,
    "severity": "info",
    "why": "SCH line 10u C_1206_3216Metric: C7, C12, C13 value changed (47u 10V -> 10u).",
    "causes": [
     "bomDiff.valueChanged[C12]",
     "bomDiff.valueChanged[C13]",
     "bomDiff.valueChanged[C7]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "adf23d732481dcf1",
    "kind": "bom",
    "ref": "J28",
    "category": "SCH",
    "metric": "qty",
    "before": 0,
    "after": 1,
    "delta": 1,
    "severity": "info",
    "why": "SCH line 5V POWER PinHeader_1x02_P2.54mm_Vertical: J28 added (qty 0 -> 1).",
    "causes": [
     "bomDiff.added[J28]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "e88c1a3b827a002d",
    "kind": "bom",
    "ref": "L1",
    "refs": [
     "L1",
     "L2"
    ],
    "category": "SCH",
    "metric": "value",
    "before": "22uH",
    "after": "1.8uH",
    "delta": null,
    "severity": "info",
    "why": "SCH line 1.8uH IND-SMD_L12.5-W12.5: L1, L2 value changed (22uH -> 1.8uH).",
    "causes": [
     "bomDiff.valueChanged[L1]",
     "bomDiff.valueChanged[L2]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "1898b50f8cbf9575",
    "kind": "bom",
    "ref": "R11",
    "category": "SCH",
    "metric": "qty",
    "before": 1,
    "after": 2,
    "delta": 1,
    "severity": "info",
    "why": "SCH line 22k R_0402_1005Metric: R11 qty changed (qty 1 -> 2).",
    "causes": [
     "bomDiff.qtyChanged[R11]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "d573326a6abcbe07",
    "kind": "bom",
    "ref": "R13",
    "category": "SCH",
    "metric": "value",
    "before": "220",
    "after": "4k7",
    "delta": null,
    "severity": "info",
    "why": "SCH line 4k7 R_0402_1005Metric: R13 value changed (220 -> 4k7).",
    "causes": [
     "bomDiff.valueChanged[R13]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "521c6aad49bccea8",
    "kind": "bom",
    "ref": "R14",
    "refs": [
     "R14",
     "R16"
    ],
    "category": "SCH",
    "metric": "value",
    "before": "10k",
    "after": "330k",
    "delta": null,
    "severity": "info",
    "why": "SCH line 330k R_0402_1005Metric: R14, R16 value changed (10k -> 330k).",
    "causes": [
     "bomDiff.valueChanged[R14]",
     "bomDiff.valueChanged[R16]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "2f91c7fc4ec385e1",
    "kind": "bom",
    "ref": "R15",
    "category": "SCH",
    "metric": "value",
    "before": "4k7",
    "after": "68k",
    "delta": null,
    "severity": "info",
    "why": "SCH line 68k R_0402_1005Metric: R15 value changed (4k7 -> 68k).",
    "causes": [
     "bomDiff.valueChanged[R15]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "14f1beea37a11d44",
    "kind": "bom",
    "ref": "R6",
    "category": "SCH",
    "metric": "value",
    "before": "220",
    "after": "12k",
    "delta": null,
    "severity": "info",
    "why": "SCH line 12k R_0402_1005Metric: R6 value changed (220 -> 12k).",
    "causes": [
     "bomDiff.valueChanged[R6]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "b0cc16130729a0c5",
    "kind": "bom",
    "ref": "R7",
    "category": "SCH",
    "metric": "value",
    "before": "1k",
    "after": "2k2",
    "delta": null,
    "severity": "info",
    "why": "SCH line 2k2 R_0402_1005Metric: R7 value changed (1k -> 2k2).",
    "causes": [
     "bomDiff.valueChanged[R7]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "82615354075d1fc2",
    "kind": "bom",
    "ref": "R8",
    "category": "SCH",
    "metric": "value",
    "before": "1k5",
    "after": "120k",
    "delta": null,
    "severity": "info",
    "why": "SCH line 120k R_0402_1005Metric: R8 value changed (1k5 -> 120k).",
    "causes": [
     "bomDiff.valueChanged[R8]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "213c1e0021c7874e",
    "kind": "bom",
    "ref": "R81",
    "category": "SCH",
    "metric": "qty",
    "before": 0,
    "after": 1,
    "delta": 1,
    "severity": "info",
    "why": "SCH line 33K R_0402_1005Metric: R81 added (qty 0 -> 1).",
    "causes": [
     "bomDiff.added[R81]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "f8e44ea5888e8ffb",
    "kind": "bom",
    "ref": "R9",
    "category": "SCH",
    "metric": "value",
    "before": "10k",
    "after": "13k",
    "delta": null,
    "severity": "info",
    "why": "SCH line 13k R_0402_1005Metric: R9 value changed (10k -> 13k).",
    "causes": [
     "bomDiff.valueChanged[R9]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "cbab23f1626bd644",
    "kind": "bom",
    "ref": "U4",
    "refs": [
     "U4",
     "U6"
    ],
    "category": "SCH",
    "metric": "mpn",
    "before": null,
    "after": "TPS564242DRLR",
    "delta": null,
    "severity": "info",
    "why": "SCH line TPS564242DRLR: U4, U6 mpn changed (none -> TPS564242DRLR).",
    "causes": [
     "bomDiff.mpnChanged[U4]",
     "bomDiff.mpnChanged[U6]"
    ],
    "assumptionDependent": false
   },
   {
    "id": "2f974a71559efde3",
    "kind": "bom",
    "ref": "U4",
    "refs": [
     "U4",
     "U6"
    ],
    "category": "SCH",
    "metric": "value",
    "before": "TPS5430DDA",
    "after": "TPS564242DRLR",
    "delta": null,
    "severity": "info",
    "why": "SCH line TPS564242DRLR: U4, U6 value changed (TPS5430DDA -> TPS564242DRLR).",
    "causes": [
     "bomDiff.valueChanged[U4]",
     "bomDiff.valueChanged[U6]"
    ],
    "assumptionDependent": false
   }
  ],
  "summary": {
   "counts": {
    "high": 0,
    "medium": 0,
    "low": 0,
    "info": 28
   },
   "headline": "28 informational change(s), none against a limit; first: SCH line 15000uF CP_Radial_D12.5mm_P5.00mm_P7.50mm: C110 dnp toggled (fitted -> dnp).",
   "markdown": "**28 informational change(s), none against a limit; first: SCH line 15000uF CP_Radial_D12.5mm_P5.00mm_P7.50mm: C110 dnp toggled (fitted -> dnp).** Layout: no change. BOM: 3 line(s) added, 3 changed quantity, 20 changed value, 1 changed MPN, 1 toggled DNP. Re-analysed on both revisions, for the changed nets and parts only: impedance. Not run for missing inputs: returnPath (see refused)."
  },
  "analysed": {
   "ran": [
    "impedance"
   ],
   "nets": [
    "+5V",
    "+6V",
    "+9V_Unreg",
    "GND",
    "Net-(C122-Pad1)",
    "Net-(C24-Pad1)",
    "Net-(D15-K)",
    "Net-(D5-K)",
    "Net-(R7-Pad2)",
    "Net-(U4-BOOT)",
    "Net-(U4-VSENSE)",
    "Net-(U6-BOOT)",
    "Net-(U6-VSENSE)",
    "unconnected-(U4-EN-Pad5)",
    "unconnected-(U4-NC-Pad2)",
    "unconnected-(U4-NC-Pad3)",
    "unconnected-(U6-EN-Pad5)",
    "unconnected-(U6-NC-Pad2)",
    "unconnected-(U6-NC-Pad3)"
   ],
   "rails": []
  },
  "assumptions": {
   "before": [
    {
     "source": "default",
     "analysis": "impedance",
     "key": "mask.er",
     "value": 3.8,
     "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)",
     "verified": false,
     "affects": [
      "outer-layer traces"
     ]
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "erEff",
     "value": 4,
     "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)",
     "verified": false,
     "affects": []
    },
    {
     "source": "derived",
     "analysis": "returnPath",
     "key": "planes",
     "value": [],
     "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles",
     "affects": [
      "every finding"
     ]
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "riseTimeNs",
     "value": 1,
     "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)",
     "verified": true,
     "affects": [],
     "unit": "ns"
    }
   ],
   "after": [
    {
     "source": "default",
     "analysis": "impedance",
     "key": "mask.er",
     "value": 3.8,
     "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)",
     "verified": false,
     "affects": [
      "outer-layer traces"
     ]
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "erEff",
     "value": 4,
     "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)",
     "verified": false,
     "affects": []
    },
    {
     "source": "derived",
     "analysis": "returnPath",
     "key": "planes",
     "value": [],
     "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles",
     "affects": [
      "every finding"
     ]
    },
    {
     "source": "default",
     "analysis": "returnPath",
     "key": "riseTimeNs",
     "value": 1,
     "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)",
     "verified": true,
     "affects": [],
     "unit": "ns"
    }
   ]
  },
  "refused": {
   "before": [
    {
     "analysis": "returnPath",
     "reasonCode": "pcb_analysis_needs_input",
     "needs": [
      "a reference plane (a poured copper layer)"
     ],
     "remedy": "no layer of this board is a plane, so there is no return path to check",
     "requested": false
    }
   ],
   "after": [
    {
     "analysis": "returnPath",
     "reasonCode": "pcb_analysis_needs_input",
     "needs": [
      "a reference plane (a poured copper layer)"
     ],
     "remedy": "no layer of this board is a plane, so there is no return path to check",
     "requested": false
    }
   ]
  }
 }
}