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"added": 0 } }, "stackup": { "changed": false, "added": [], "removed": [], "modified": [], "reordered": false, "thickness": null }, "warnings": [] }, "bomDiff": { "summary": { "added": 0, "removed": 0, "qtyChanged": 1, "valueChanged": 0, "footprintChanged": 0, "mpnChanged": 0, "dnpToggled": 0, "categoryChanged": 0, "total": 1, "unchanged": 218 }, "added": [], "removed": [], "qtyChanged": [ { "kind": "qty-changed", "category": "SCH", "key": "vf:15r|r_0603_1608metric", "part": { "value": "15R", "footprint": "Resistor_SMD:R_0603_1608Metric" }, "qtyFrom": 18, "qtyTo": 21, "refsAdded": [ "R42", "R68", "R69" ], "refsRemoved": [], "refs": [ "R42", "R43", "R44", "R45", "R46", "R53", "R54", "R55", "R56", "R57", "R58", "R59", "R60", "R61", "R62", "R63", "R64", "R65", "R66", "R68", "R69" ] } ], "valueChanged": [], "footprintChanged": [], "mpnChanged": [], "dnpToggled": [], "categoryChanged": [], "byCategory": { "SCH": { "qtyChanged": 1 }, "PCB": {}, "BOARD_FEATURE": {} } }, "impacts": [ { "id": "db0fc467ceea51f9", "kind": "bom", "ref": "R42", "refs": [ "R42", "R68", "R69" ], "category": "SCH", "metric": "qty", "before": 18, "after": 21, "delta": 3, "severity": "info", "why": "SCH line 15R R_0603_1608Metric: R42, R68, R69 qty changed (qty 18 -> 21).", "causes": [ "bomDiff.qtyChanged[R42]", "bomDiff.qtyChanged[R68]", "bomDiff.qtyChanged[R69]" ], "assumptionDependent": false }, { "id": "258abdcd4010d22f", "kind": "impedance", "net": "/AU_GATESIG", "layer": "B.Cu", "metric": "z0Ohm", "before": null, "after": 95.68, "delta": null, "severity": "info", "why": "/AU_GATESIG: rerouted (11.55 mm new copper); now routed on B.Cu; vias 3 -> 5; +1 more - Z0 on B.Cu appeared at 95.68 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.moved[R47]", "layoutDiff.nets.changed[/AU_GATESIG]" ], "assumptionDependent": true }, { "id": "53dc6e083d50ab22", "kind": "impedance", "net": "/BU_GATESIG", "layer": "B.Cu", "metric": "z0Ohm", "before": null, "after": 95.68, "delta": null, "severity": "info", "why": "/BU_GATESIG: rerouted (16.37 mm new copper); now routed on B.Cu; vias 3 -> 5; +1 more - Z0 on B.Cu appeared at 95.68 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.moved[R49]", "layoutDiff.nets.changed[/BU_GATESIG]" ], "assumptionDependent": true }, { "id": "16c016b3b9391fe1", "kind": "impedance", "net": "/CU_GATESIG", "layer": "B.Cu", "metric": "z0Ohm", "before": null, "after": 95.68, "delta": null, "severity": "info", "why": "/CU_GATESIG: rerouted (16.36 mm new copper); now routed on B.Cu; no longer on F.Cu; +2 more - Z0 on B.Cu appeared at 95.68 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.moved[R51]", "layoutDiff.nets.changed[/CU_GATESIG]" ], "assumptionDependent": true }, { "id": "77e420c789d5e41d", "kind": "impedance", "net": "/CU_GATESIG", "layer": "F.Cu", "metric": "z0Ohm", "before": 95.68, "after": null, "delta": null, "severity": "info", "why": "/CU_GATESIG: rerouted (16.36 mm new copper); now routed on B.Cu; no longer on F.Cu; +2 more - Z0 on F.Cu gone (was 95.68 ohm).", "causes": [ "layoutDiff.components.moved[R51]", "layoutDiff.nets.changed[/CU_GATESIG]" ], "assumptionDependent": true }, { "id": "b0b572c7703e443d", "kind": "impedance", "net": "Net-(U1-VB)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 95.68, "delta": null, "severity": "info", "why": "Net-(U1-VB): new net; C1 moved 1.475 mm; R42 added; +1 more - Z0 on F.Cu appeared at 95.68 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R42]", "layoutDiff.components.moved[C1]", "layoutDiff.nets.added[Net-(U1-VB)]" ], "assumptionDependent": true }, { "id": "b2b60b141eea2116", "kind": "impedance", "net": "Net-(U2-VB)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 95.68, "delta": null, "severity": "info", "why": "Net-(U2-VB): new net; C2 moved 1.485 mm; R68 added; +1 more - Z0 on F.Cu appeared at 95.68 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R68]", "layoutDiff.components.moved[C2]", "layoutDiff.nets.added[Net-(U2-VB)]" ], "assumptionDependent": true }, { "id": "427678fdc7f62527", "kind": "impedance", "net": "Net-(U3-VB)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 95.68, "delta": null, "severity": "info", "why": "Net-(U3-VB): new net; C3 moved 1.476 mm; R69 added; +1 more - Z0 on F.Cu appeared at 95.68 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R69]", "layoutDiff.components.moved[C3]", "layoutDiff.nets.added[Net-(U3-VB)]" ], "assumptionDependent": true }, { "id": "7fd0fbcce780091a", "kind": "impedance", "net": "PHASE_A", "layer": "F.Cu", "metric": "z0Ohm", "before": 89.07, "after": 95.68, "delta": 6.61, "severity": "info", "why": "PHASE_A: rerouted (12.47 mm new copper); C1 moved 1.475 mm; R47 moved 1.528 mm; +2 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[R47]", "layoutDiff.components.moved[R5]", "layoutDiff.nets.changed[PHASE_A]" ], "assumptionDependent": true } ], "summary": { "counts": { "high": 0, "medium": 0, "low": 0, "info": 9 }, "headline": "9 informational change(s), none against a limit; first: SCH line 15R R_0603_1608Metric: R42, R68, R69 qty changed (qty 18 -> 21).", "markdown": "**9 informational change(s), none against a limit; first: SCH line 15R R_0603_1608Metric: R42, R68, R69 qty changed (qty 18 -> 21).** Layout: components: 3 added, 9 moved, 3 rotated; nets: 3 added, 15 rerouted. BOM: 1 changed quantity. 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", "/CU_GATESIG", "A_PHA_VSENSE", "A_PHB_VSENSE", "A_PHC_VSENSE", "GND", "Net-(D1-K)", "Net-(D2-K)", "Net-(D3-K)", "Net-(U1-VB)", "Net-(U2-VB)", "Net-(U3-VB)", "PHASE_A", "PHASE_B", "PHASE_C" ], "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": "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": "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 } ] } } }