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-6.44005356, "perLayer": { "F.Cu": { "a": 6.467124628, "b": 0.027071068, "delta": -6.44005356 } } }, "width": { "min": { "a": 0.2, "b": 0.2 }, "max": { "a": 1, "b": 1 }, "perLayer": { "F.Cu": { "a": { "min": 0.2, "max": 1 }, "b": { "min": 0.2, "max": 0.2 } } } }, "copperArea": { "a": 0, "b": 11.020144347, "delta": 11.020144347, "perLayer": { "F.Cu": { "a": 0, "b": 11.020144347, "delta": 11.020144347 } }, "note": "pour (region) area only" }, "vias": { "a": 0, "b": 0, "delta": 0, "drills": { "a": {}, "b": {} }, "drillDelta": {} }, "pads": { "a": 8, "b": 8, "added": [], "removed": [] }, "reroutedLengthMm": { "removed": 6.44005356, "added": 0 }, "viasMoved": { "removed": 0, "added": 0 }, "rerouted": true }, { "name": "VSENSE2", "length": { "a": 66.157991213, "b": 67.247940707, "delta": 1.089949494, "perLayer": { "F.Cu": { "a": 32.326436305, "b": 33.416385799, "delta": 1.089949494 } } }, "width": { "min": { "a": 0.2, "b": 0.2 }, "max": { "a": 0.2, "b": 0.2 }, "perLayer": {} }, "copperArea": { "a": 0, "b": 0, "delta": 0, "perLayer": {}, "note": "pour (region) area only" }, "vias": { "a": 4, "b": 4, "delta": 0, "drills": { "a": { "0.3": 4 }, "b": { "0.3": 4 } }, "drillDelta": {} }, "pads": { "a": 9, "b": 9, "added": [], "removed": [] }, "reroutedLengthMm": { "removed": 0, "added": 1.089949494 }, "viasMoved": { "removed": 0, "added": 0 }, "rerouted": true } ] }, "outline": { "changed": false, "loops": { "a": 1, "b": 1 }, "bbox": { "a": [ 50, 47, 150, 122 ], "b": [ 50, 47, 150, 122 ] }, "size": { "a": [ 100, 75 ], "b": [ 100, 75 ] }, "perimeterMm": { "a": 350, "b": 350, "delta": 0 }, "areaMm2": { "a": 7500, "b": 7500, "delta": 0 }, "changedLengthMm": { "removed": 0, "added": 0 } }, "stackup": { "changed": false, "added": [], "removed": [], "modified": [], "reordered": false, "thickness": null }, "warnings": [] }, "bomDiff": { "summary": { "added": 0, "removed": 0, "qtyChanged": 0, "valueChanged": 1, "footprintChanged": 1, "mpnChanged": 0, "dnpToggled": 0, "categoryChanged": 0, "total": 2, "unchanged": 200 }, "added": [], "removed": [], "qtyChanged": [], "valueChanged": [ { "kind": "value-changed", "category": "SCH", "key": "vf:us1m|d_sma", "part": { "value": "US1M", "footprint": "Diode_SMD:D_SMA" }, "from": "SM4007", "to": "US1M", "refs": [ "D1", "D2", "D3" ] } ], "footprintChanged": [ { "kind": "footprint-changed", "category": "SCH", "key": "vf:us1m|d_sma", "part": { "value": "US1M", "footprint": "Diode_SMD:D_SMA" }, "from": "Diode_SMD:D_SOD-123", "to": "Diode_SMD:D_SMA", "refs": [ "D1", "D2", "D3" ] } ], "mpnChanged": [], "dnpToggled": [], "categoryChanged": [], "byCategory": { "SCH": { "valueChanged": 1, "footprintChanged": 1 }, "PCB": {}, "BOARD_FEATURE": {} } }, "impacts": [ { "id": "2adc5e89ba547923", "kind": "bom", "ref": "D1", "refs": [ "D1", "D2", "D3" ], "category": "SCH", "metric": "footprint", "before": "Diode_SMD:D_SOD-123", "after": "Diode_SMD:D_SMA", "delta": null, "severity": "info", "why": "SCH line US1M D_SMA: D1, D2, D3 footprint changed (Diode_SMD:D_SOD-123 -> Diode_SMD:D_SMA).", "causes": [ "bomDiff.footprintChanged[D1]", "bomDiff.footprintChanged[D2]", "bomDiff.footprintChanged[D3]" ], "assumptionDependent": false }, { "id": "f5bdc8e3420e5d25", "kind": "bom", "ref": "D1", "refs": [ "D1", "D2", "D3" ], "category": "SCH", "metric": "value", "before": "SM4007", "after": "US1M", "delta": null, "severity": "info", "why": "SCH line US1M D_SMA: D1, D2, D3 value changed (SM4007 -> US1M).", "causes": [ "bomDiff.valueChanged[D1]", "bomDiff.valueChanged[D2]", "bomDiff.valueChanged[D3]" ], "assumptionDependent": false }, { "id": "b44d6fee14f7c8b0", "kind": "impedance", "net": "A_SHA_V+", "layer": "B.Cu", "metric": "zdiffOhm", "before": 121.7, "after": 150.5, "delta": 28.8, "severity": "info", "why": "A_SHA_V+: rerouted (28.15 mm new copper) - Zdiff on B.Cu 121.7 ohm -> 150.5 ohm (+28.8), with no limit to judge against.", "causes": [ "layoutDiff.nets.changed[A_SHA_V+]" ], "assumptionDependent": true }, { "id": "d6f84f000877deb6", "kind": "impedance", "net": "A_SHA_V-", "layer": "B.Cu", "metric": "zdiffOhm", "before": 121.7, "after": 150.5, "delta": 28.8, "severity": "info", "why": "A_SHA_V-: rerouted (32.94 mm new copper) - Zdiff on B.Cu 121.7 ohm -> 150.5 ohm (+28.8), with no limit to judge against.", "causes": [ "layoutDiff.nets.changed[A_SHA_V-]" ], "assumptionDependent": true }, { "id": "5b0dd2c84c8afd35", "kind": "impedance", "net": "HIN_A", "layer": "F.Cu", "metric": "z0Ohm", "before": 95.68, "after": null, "delta": null, "severity": "info", "why": "HIN_A: rerouted (32.75 mm new copper); no longer on F.Cu; U1 moved 2.678 mm - Z0 on F.Cu gone (was 95.68 ohm).", "causes": [ "layoutDiff.components.moved[U1]", "layoutDiff.nets.changed[HIN_A]" ], "assumptionDependent": true }, { "id": "d03f25a34ccddbaa", "kind": "impedance", "net": "HIN_B", "layer": "B.Cu", "metric": "z0Ohm", "before": null, "after": 95.68, "delta": null, "severity": "info", "why": "HIN_B: rerouted (34.14 mm new copper); now routed on B.Cu; vias 0 -> 1; +1 more - Z0 on B.Cu appeared at 95.68 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.moved[U2]", "layoutDiff.nets.changed[HIN_B]" ], "assumptionDependent": true }, { "id": "2333c88cc8d135d1", "kind": "impedance", "net": "LIN_A", "layer": "F.Cu", "metric": "z0Ohm", "before": 95.68, "after": null, "delta": null, "severity": "info", "why": "LIN_A: rerouted (23.48 mm new copper); no longer on F.Cu; U1 moved 2.678 mm - Z0 on F.Cu gone (was 95.68 ohm).", "causes": [ "layoutDiff.components.moved[U1]", "layoutDiff.nets.changed[LIN_A]" ], "assumptionDependent": true }, { "id": "ec4309b12e774e0c", "kind": "impedance", "net": "Net-(C1-Pad1)", "layer": "F.Cu", "metric": "z0Ohm", "before": 89.07, "after": 95.68, "delta": 6.61, "severity": "info", "why": "Net-(C1-Pad1): rerouted (6.22 mm new copper); F.Cu width 0.25 -> 0.2 mm; C1 moved 3.948 mm; +4 more - Z0 on F.Cu 89.07 ohm -> 95.68 ohm (+6.61), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C1]", "layoutDiff.components.moved[D1]", "layoutDiff.components.moved[U1]", "layoutDiff.nets.changed[Net-(C1-Pad1)]" ], "assumptionDependent": true }, { "id": "fd0c0e7e30822fc3", "kind": "impedance", "net": "Net-(C2-Pad1)", "layer": "F.Cu", "metric": "z0Ohm", "before": 89.07, "after": 95.68, "delta": 6.61, "severity": "info", "why": "Net-(C2-Pad1): rerouted (6.166 mm new copper); F.Cu width 0.25 -> 0.2 mm; C2 moved 3.934 mm; +4 more - Z0 on F.Cu 89.07 ohm -> 95.68 ohm (+6.61), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C2]", "layoutDiff.components.moved[D2]", "layoutDiff.components.moved[U2]", "layoutDiff.nets.changed[Net-(C2-Pad1)]" ], "assumptionDependent": true }, { "id": "3b52d40ba3a28682", "kind": "impedance", "net": "Net-(C3-Pad1)", "layer": "F.Cu", "metric": "z0Ohm", "before": 89.07, "after": 95.68, "delta": 6.61, "severity": "info", "why": "Net-(C3-Pad1): rerouted (6.253 mm new copper); F.Cu width 0.25 -> 0.2 mm; C3 moved 3.939 mm; +4 more - Z0 on F.Cu 89.07 ohm -> 95.68 ohm (+6.61), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C3]", "layoutDiff.components.moved[D3]", "layoutDiff.components.moved[U3]", "layoutDiff.nets.changed[Net-(C3-Pad1)]" ], "assumptionDependent": true }, { "id": "2ae2e5b8296685d2", "kind": "impedance", "net": "V12V", "layer": "F.Cu", "metric": "z0Ohm", "before": 47.54, "after": 30.35, "delta": -17.19, "severity": "info", "why": "V12V: rerouted (0.01774 mm new copper); vias 6 -> 9; pour +160.5 mm2; +22 more - Z0 on F.Cu 47.54 ohm -> 30.35 ohm (-17.19), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C11]", "layoutDiff.components.moved[C12]", "layoutDiff.components.moved[C13]", "layoutDiff.components.moved[C26]", "layoutDiff.components.moved[C27]", "layoutDiff.components.moved[C28]", "layoutDiff.components.moved[D1]", "layoutDiff.components.moved[D2]", "layoutDiff.components.moved[D3]", "layoutDiff.components.moved[U1]", "layoutDiff.components.moved[U2]", "layoutDiff.components.moved[U3]", "layoutDiff.components.moved[U7]", "layoutDiff.nets.changed[V12V]" ], "assumptionDependent": true }, { "id": "45ea930ebafcc124", "kind": "impedance", "net": "V5V", "layer": "F.Cu", "metric": "z0Ohm", "before": 47.54, "after": 95.68, "delta": 48.14, "severity": "info", "why": "V5V: rerouted (0 mm new copper); F.Cu width 0.2-1 -> 0.2 mm; pour +11.02 mm2; +7 more - Z0 on F.Cu 47.54 ohm -> 95.68 ohm (+48.14), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C10]", "layoutDiff.components.moved[C8]", "layoutDiff.components.moved[C9]", "layoutDiff.components.moved[U7]", "layoutDiff.nets.changed[V5V]" ], "assumptionDependent": true }, { "id": "550dd35d747aabdc", "kind": "returnPath", "net": "V12V", "metric": "finding.edge-proximity", "before": 3, "after": 0, "delta": -3, "severity": "info", "why": "V12V: rerouted (0.01774 mm new copper); vias 6 -> 9; pour +160.5 mm2 - edge-proximity findings 3 -> 0.", "causes": [ "layoutDiff.components.moved[C11]", "layoutDiff.components.moved[C12]", "layoutDiff.components.moved[C13]", "layoutDiff.components.moved[C26]", "layoutDiff.components.moved[C27]", "layoutDiff.components.moved[C28]", "layoutDiff.components.moved[D1]", "layoutDiff.components.moved[D2]", "layoutDiff.components.moved[D3]", "layoutDiff.components.moved[U1]", "layoutDiff.components.moved[U2]", "layoutDiff.components.moved[U3]", "layoutDiff.components.moved[U7]", "layoutDiff.nets.changed[V12V]" ], "assumptionDependent": true }, { "id": "f1bacb01bd909e38", "kind": "returnPath", "net": "V5V", "metric": "finding.edge-proximity", "before": 11, "after": 9, "delta": -2, "severity": "info", "why": "V5V: rerouted (0 mm new copper); F.Cu width 0.2-1 -> 0.2 mm; pour +11.02 mm2 - edge-proximity findings 11 -> 9.", "causes": [ "layoutDiff.components.moved[C10]", "layoutDiff.components.moved[C8]", "layoutDiff.components.moved[C9]", "layoutDiff.components.moved[U7]", "layoutDiff.nets.changed[V5V]" ], "assumptionDependent": true } ], "summary": { "counts": { "high": 0, "medium": 0, "low": 0, "info": 14 }, "headline": "14 informational change(s), none against a limit; first: SCH line US1M D_SMA: D1, D2, D3 footprint changed (Diode_SMD:D_SOD-123 -> Diode_SMD:D_SMA).", "markdown": "**14 informational change(s), none against a limit; first: SCH line US1M D_SMA: D1, D2, D3 footprint changed (Diode_SMD:D_SOD-123 -> Diode_SMD:D_SMA).** Layout: components: 26 moved, 6 rotated, 3 with a new footprint, 3 with a new value; nets: 1 changed, 37 rerouted. BOM: 1 changed value, 1 changed footprint. Re-analysed on both revisions, for the changed nets and parts only: impedance, cert, returnPath. Every electrical change is informational (improved, or no limit to judge against). Not run for missing inputs: cert.creepage (see refused). Rows marked assumptionDependent rest on ledgered typical values." }, "analysed": { "ran": [ "impedance", "cert", "returnPath" ], "nets": [ "/AL_GATESIG", "/AU_GATESIG", "/BL_GATESIG", "/BU_GATESIG", "/CL_GATESIG", "/CU_GATESIG", "A_PHB_VSENSE", "A_PHC_VSENSE", "A_SHA_V+", "A_SHA_V-", "GND", "HIN_A", "HIN_B", "HIN_C", "LIN_A", "LIN_B", "LIN_C", "Net-(C1-Pad1)", "Net-(C2-Pad1)", "Net-(C3-Pad1)", "Net-(J1-Pad2)", "Net-(J1-Pad3)", "Net-(RG1-Pad2)", "Net-(RG2-Pad2)", "Net-(RG3-Pad2)", "Net-(RG4-Pad2)", "Net-(RG5-Pad2)", "Net-(RG6-Pad2)", "PB6 D_UART1_TX I2C1_SCL TIM4_CH1", "PB7 D_UART1_RX I2C1_SDA TIM4_CH2", "PB9 DI2C1_SDA TIM4_CH4", "PHASE_A", "PHASE_B", "PHASE_C", "V12V", "V3V3", "V5V", "VSENSE2" ], "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": "derived", "analysis": "impedance", "key": "no_target", "value": "no impedance targets (netClasses / .kicad_pro)", "affects": [ "every row: status no_target" ] }, { "source": "default", "analysis": "cert", "key": "fab", "value": "jlcpcb", "citation": "fab profile jlcpcb (NativeCAD default)", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "ipc6012.drillPositionTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.innerRegistrationTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.outerRegistrationTolMm", "value": 0.05, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipcClass", "value": "2", "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "motC", "value": 105, "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)", "verified": false, "affects": [], "unit": "C" }, { "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": [ "In1.Cu:GND", "In2.Cu:GND" ], "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": "derived", "analysis": "impedance", "key": "no_target", "value": "no impedance targets (netClasses / .kicad_pro)", "affects": [ "every row: status no_target" ] }, { "source": "default", "analysis": "cert", "key": "fab", "value": "jlcpcb", "citation": "fab profile jlcpcb (NativeCAD default)", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "ipc6012.drillPositionTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.innerRegistrationTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.outerRegistrationTolMm", "value": 0.05, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipcClass", "value": "2", "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "motC", "value": 105, "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)", "verified": false, "affects": [], "unit": "C" }, { "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": [ "In1.Cu:GND", "In2.Cu:GND" ], "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": "cert.creepage", "reasonCode": "pcb_analysis_needs_input", "needs": [ "cert.pairs[].a", "cert.pairs[].b", "cert.pairs[].workingVrms" ], "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them", "requested": false } ], "after": [ { "analysis": "cert.creepage", "reasonCode": "pcb_analysis_needs_input", "needs": [ "cert.pairs[].a", "cert.pairs[].b", "cert.pairs[].workingVrms" ], "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them", "requested": false } ] } } }