Adom Custom Electronic Load - sim/servo-sensitivity.json

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John Lauer R0 engineering checkpoint: checked schematic, sourcing, servo evidence and safety-policy code; PCB and qualification incomplete 10054d3 1h ago

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{
  "compensation_nF": 1.0,
  "scope": "partial current servo only",
  "vendor_amplifier": "TI OPAx189 Rev E, unmodified",
  "transistor": "illustrative Level-1 NMOS, NOT vendor IXTP64N10L2 model",
  "limitations": [
    "No thermals or linear-mode SOA in this model",
    "No cable inductance, DUT control-loop interaction, boost ripple or PCB parasitics",
    "No tolerance sweep or measurement chain validation",
    "Ideal switch approximates gate clamp; hardware latch and startup/reset/power-domain faults require separate tests"
  ],
  "pass": true,
  "rows": [
    {
      "kp_assumed": 0.4,
      "capacitance_scale_assumed": 1,
      "measurements": {
        "one_amp": {
          "mean_A": 0.9999217033666667,
          "ripple_pp_A": 6.999999979662164e-08,
          "error_A": -7.829663333325243e-05
        },
        "three_amp": {
          "mean_A": 2.99992147454,
          "ripple_pp_A": 7.000000001866624e-08,
          "error_A": -7.852546000020055e-05
        },
        "off": {
          "mean_A": -7.360884646066666e-11,
          "ripple_pp_A": 8.880600000000527e-14,
          "error_A": -7.360884646066666e-11
        }
      },
      "peak_A": 2.99992169,
      "gate_max_V": 7.34067415,
      "settled_windows_pass": true
    },
    {
      "kp_assumed": 0.4,
      "capacitance_scale_assumed": 3,
      "measurements": {
        "one_amp": {
          "mean_A": 0.9999217032933334,
          "ripple_pp_A": 6.999999979662164e-08,
          "error_A": -7.829670666659183e-05
        },
        "three_amp": {
          "mean_A": 2.999921474503334,
          "ripple_pp_A": 7.000000001866624e-08,
          "error_A": -7.852549666598208e-05
        },
        "off": {
          "mean_A": -8.503533324833333e-11,
          "ripple_pp_A": 9.474449999999216e-14,
          "error_A": -8.503533324833333e-11
        }
      },
      "peak_A": 2.999921695,
      "gate_max_V": 7.34067416,
      "settled_windows_pass": true
    },
    {
      "kp_assumed": 4,
      "capacitance_scale_assumed": 1,
      "measurements": {
        "one_amp": {
          "mean_A": 0.9999221076333333,
          "ripple_pp_A": 7.499999998827889e-08,
          "error_A": -7.789236666666532e-05
        },
        "three_amp": {
          "mean_A": 2.99992217815,
          "ripple_pp_A": 7.000000046275545e-08,
          "error_A": -7.782185000015929e-05
        },
        "off": {
          "mean_A": -6.909679542333332e-11,
          "ripple_pp_A": 1.0717199999999614e-13,
          "error_A": -6.909679542333332e-11
        }
      },
      "peak_A": 2.9999225,
      "gate_max_V": 4.75555325,
      "settled_windows_pass": true
    },
    {
      "kp_assumed": 4,
      "capacitance_scale_assumed": 3,
      "measurements": {
        "one_amp": {
          "mean_A": 0.9999221077733333,
          "ripple_pp_A": 7.000000012968854e-08,
          "error_A": -7.789222666665374e-05
        },
        "three_amp": {
          "mean_A": 2.99992217845,
          "ripple_pp_A": 7.000000046275545e-08,
          "error_A": -7.782155000013447e-05
        },
        "off": {
          "mean_A": -8.022948236733335e-11,
          "ripple_pp_A": 1.1430650000000136e-13,
          "error_A": -8.022948236733335e-11
        }
      },
      "peak_A": 2.9999225050000002,
      "gate_max_V": 4.75555325,
      "settled_windows_pass": true
    },
    {
      "kp_assumed": 40,
      "capacitance_scale_assumed": 1,
      "measurements": {
        "one_amp": {
          "mean_A": 0.9999222355766666,
          "ripple_pp_A": 6.999999990764394e-08,
          "error_A": -7.776442333340405e-05
        },
        "three_amp": {
          "mean_A": 2.99992240056,
          "ripple_pp_A": 7.000000001866624e-08,
          "error_A": -7.759943999996466e-05
        },
        "off": {
          "mean_A": -6.767015446733333e-11,
          "ripple_pp_A": 1.1297949999999142e-13,
          "error_A": -6.767015446733333e-11
        }
      },
      "peak_A": 2.999922735,
      "gate_max_V": 3.93806609,
      "settled_windows_pass": true
    },
    {
      "kp_assumed": 40,
      "capacitance_scale_assumed": 3,
      "measurements": {
        "one_amp": {
          "mean_A": 0.9999222353833334,
          "ripple_pp_A": 6.999999990764394e-08,
          "error_A": -7.776461666664236e-05
        },
        "three_amp": {
          "mean_A": 2.9999223998933333,
          "ripple_pp_A": 7.000000001866624e-08,
          "error_A": -7.760010666668649e-05
        },
        "off": {
          "mean_A": -7.870995799299999e-11,
          "ripple_pp_A": 1.2049050000000395e-13,
          "error_A": -7.870995799299999e-11
        }
      },
      "peak_A": 2.999922735,
      "gate_max_V": 3.93806609,
      "settled_windows_pass": true
    }
  ]
}