DRV8425PWPR

{
  "slug": "drv8425pwpr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Stepper Motor Driver, HTSSOP-28-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "motor driver ics",
    "drv8425pwpr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "drv8425pwpr.kicad_sym",
    "drv8425pwpr.kicad_mod",
    "drv8425pwpr.glb",
    "drv8425pwpr.step",
    "drv8425pwpr.lbr",
    "docs/hero.png",
    "docs/drv8425pwpr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "DRV8425PWPR",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-28-EP",
    "pin_count": 29,
    "category": "Motor Driver ICs",
    "subcategory": "Stepper Motor Driver",
    "datasheet": "https://www.ti.com/cn/lit/gpn/drv8425",
    "parts": {
      "symbol": "drv8425pwpr.kicad_sym",
      "footprint": "drv8425pwpr.kicad_mod",
      "model_3d": "drv8425pwpr-etched.glb",
      "model_3d_plain": "drv8425pwpr.glb",
      "model_3d_step": "drv8425pwpr-etched.step",
      "model_3d_step_plain": "drv8425pwpr.step",
      "lbr": "drv8425pwpr.lbr"
    },
    "distributor_links": {
      "lcsc": "C3681319"
    },
    "pins": [
      {
        "number": "1",
        "name": "VCP",
        "type": "power_out",
        "description": "Charge pump output voltage supplying gate driver power; connect 0.22µF 16V X7R ceramic capacitor to VM."
      },
      {
        "number": "2",
        "name": "VM",
        "type": "power_in",
        "description": "Motor power supply voltage input ranging 4.5V to 33V; bypass each pin with 0.01µF ceramic capacitor and bulk capacitor to PGND."
      },
      {
        "number": "3",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection for motor power supply; connect to system ground."
      },
      {
        "number": "4",
        "name": "AOUT1",
        "type": "output",
        "description": "Winding A output channel 1 for stepper motor phase A drive; connect to motor winding."
      },
      {
        "number": "5",
        "name": "AOUT1",
        "type": "output",
        "description": "Winding A output channel 1 (parallel pin) for stepper motor phase A drive; connect to motor winding."
      },
      {
        "number": "6",
        "name": "AOUT2",
        "type": "output",
        "description": "Winding A output channel 2 for stepper motor phase A drive; connect to motor winding."
      },
      {
        "number": "7",
        "name": "AOUT2",
        "type": "output",
        "description": "Winding A output channel 2 (parallel pin) for stepper motor phase A drive; connect to motor winding."
      },
      {
        "number": "8",
        "name": "BOUT2",
        "type": "output",
        "description": "Winding B output channel 2 for stepper motor phase B drive; connect to motor winding."
      },
      {
        "number": "9",
        "name": "BOUT2",
        "type": "output",
        "description": "Winding B output channel 2 (parallel pin) for stepper motor phase B drive; connect to motor winding."
      },
      {
        "number": "10",
        "name": "BOUT1",
        "type": "output",
        "description": "Winding B output channel 1 for stepper motor phase B drive; connect to motor winding."
      },
      {
        "number": "11",
        "name": "BOUT1",
        "type": "output",
        "description": "Winding B output channel 1 (parallel pin) for stepper motor phase B drive; connect to motor winding."
      },
      {
        "number": "12",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection for motor power supply; connect to system ground."
      },
      {
        "number": "13",
        "name": "VM",
        "type": "power_in",
        "description": "Motor power supply voltage input ranging 4.5V to 33V; bypass with 0.01µF ceramic capacitor and bulk capacitor to PGND."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device logic ground; connect to system ground."
      },
      {
        "number": "15",
        "name": "DVDD",
        "type": "power_out",
        "description": "Internal regulator output providing 4.75V to 5.25V logic power; bypass with 0.47µF to 1µF X7R ceramic capacitor to GND."
      },
      {
        "number": "16",
        "name": "nFAULT",
        "type": "output",
        "description": "Fault status indicator open-drain output; pulled low during fault conditions (UVLO, CPUV, OCP, OTSD); requires external pull-up resistor to VCC."
      },
      {
        "number": "17",
        "name": "VREF",
        "type": "power_in",
        "description": "Current set reference input voltage with maximum 2.64V for DRV8425; sets full-scale motor current via current control DAC (KV = 1.32 V/A)."
      },
      {
        "number": "18",
        "name": "M0",
        "type": "input",
        "description": "Microstepping mode setting pin with internal pull-down resistor; configure with M1 to select step resolution from full-step to 1/256 microstep."
      },
      {
        "number": "19",
        "name": "TOFF",
        "type": "input",
        "description": "PWM chopping OFF-time four-level input pin; sets 7µs, 16µs, 24µs, or 32µs OFF duration and ripple current in intelligent tuning mode."
      },
      {
        "number": "20",
        "name": "DECAY1",
        "type": "input",
        "description": "Decay mode setting pin with internal pull-down resistor; configure with DECAY0 to select decay strategy (smart tuning, mixed, slow)."
      },
      {
        "number": "21",
        "name": "DECAY0",
        "type": "input",
        "description": "Decay mode setting pin with internal pull-down resistor; configure with DECAY1 to select decay strategy (smart tuning, mixed, slow)."
      },
      {
        "number": "22",
        "name": "M1",
        "type": "input",
        "description": "Microstepping mode setting four-level input pin; configure with M0 to select step resolution from full-step to 1/256 microstep."
      },
      {
        "number": "23",
        "name": "STEP",
        "type": "input",
        "description": "Stepper motor step command input with internal pull-down; rising edge advances motor one microstep; maximum 500kHz input frequency."
      },
      {
        "number": "24",
        "name": "DIR",
        "type": "input",
        "description": "Motor rotation direction control input with internal pull-down; logic level selects clockwise or counter-clockwise stepping direction."
      },
      {
        "number": "25",
        "name": "ENABLE",
        "type": "input",
        "description": "Device output enable control input with internal pull-up to DVDD; logic low disables all outputs, logic high enables normal operation."
      },
      {
        "number": "26",
        "name": "nSLEEP",
        "type": "input",
        "description": "Sleep mode control input with internal pull-down; logic high enables device, logic low enters 2µA low-power sleep mode; low pulse clears fault."
      },
      {
        "number": "27",
        "name": "CPL",
        "type": "passive",
        "description": "Charge pump negative switching node; connect 0.022µF X7R ceramic capacitor between CPL and CPH for charge pump energy storage."
      },
      {
        "number": "28",
        "name": "CPH",
        "type": "passive",
        "description": "Charge pump positive switching node; connect 0.022µF X7R ceramic capacitor between CPH and CPL for charge pump energy storage."
      },
      {
        "number": "29",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Thermal pad (PAD) is present on HTSSOP-28-EP but has no pin number; per mechanical diagram on page 4",
          "exposed pad 29 added from the footprint"
        ],
        "pages_sent": 56,
        "cost_usd": 0.4782,
        "at": "2026-09-23T09:05:55"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/drv8425",
        "pages": 56,
        "sha256": "d2894da743bf3f58",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "drv8425pwpr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "drv8425pwpr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f2012b7e133f1ac9c3506fdcbccede8a7cb44b02a672bf178ee0f67bf0e84cc1",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}