TPS40131RHBR

{
  "slug": "tps40131rhbr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Controllers, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "power supply chip",
    "tps40131rhbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "tps40131rhbr.step",
    "tps40131rhbr.lbr",
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    "docs/tps40131rhbr-datasheet.pdf",
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  "component": {
    "mpn": "TPS40131RHBR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps40131",
    "parts": {
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      "footprint": "tps40131rhbr.kicad_mod",
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      "lbr": "tps40131rhbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C486053",
      "digikey": "296-21675-2-ND",
      "mouser": "595-TPS40131RHBR"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T01:31:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-21675-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS40131RHBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT1",
        "type": "input",
        "description": "Bootstrap supply for the PWM1 high-side FET driver; connect a capacitor from this pin to SW1 and a Schottky diode from this pin to VIN5."
      },
      {
        "number": "2",
        "name": "OVSET",
        "type": "input",
        "description": "A resistor divider from the output voltage to this pin sets the overvoltage sense point."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "input",
        "description": "Non-inverting input of the differential amplifier, to be connected to VOUT at the point of load."
      },
      {
        "number": "4",
        "name": "GSNS",
        "type": "input",
        "description": "Inverting input of the differential amplifier, to be connected to ground at the point of load."
      },
      {
        "number": "5",
        "name": "DIFFO",
        "type": "output",
        "description": "Output of the differential amplifier giving the true output voltage without PCB IR drops; VOUT and GSNS must be connected directly at the point of load."
      },
      {
        "number": "6",
        "name": "CS1",
        "type": "input",
        "description": "Senses the channel 1 inductor phase current through an external sense resistor or an R-C network using the inductor DCR, with traces connected directly at the sense element."
      },
      {
        "number": "7",
        "name": "CSRT1",
        "type": "output",
        "description": "Return point of the channel 1 current sense voltage; traces must connect directly at the current sense element."
      },
      {
        "number": "8",
        "name": "COMP",
        "type": "output",
        "description": "Output of the error amplifier; its voltage sets the PWM duty cycle."
      },
      {
        "number": "9",
        "name": "VREF",
        "type": "power_out",
        "description": "Output of the internal reference voltage; the load may be up to 100 µA DC."
      },
      {
        "number": "10",
        "name": "+EA",
        "type": "input",
        "description": "Non-inverting input of the error amplifier, normally connected to VREF, which is the voltage the feedback loop regulates to."
      },
      {
        "number": "11",
        "name": "FB",
        "type": "input",
        "description": "Inverting error amplifier input regulated to the internal 700 mV reference in closed loop; also used by the PGOOD and undervoltage comparators."
      },
      {
        "number": "12",
        "name": "VDD",
        "type": "power_in",
        "description": "Power input for the LDO that powers the differential amplifier and the current sense amplifiers."
      },
      {
        "number": "13",
        "name": "BP8",
        "type": "power_out",
        "description": "LDO output powering the differential and current sense amplifiers, approximately (VVDD − 0.2 V) until it regulates at about 7.5 V; decouple with a minimum of 1.0 µF to GND."
      },
      {
        "number": "14",
        "name": "EN/SYNC",
        "type": "input",
        "description": "A logic-high signal enables controller operation, and a pulsing signal synchronizes the rising edge of SW to the falling edge of an external clock."
      },
      {
        "number": "15",
        "name": "ILIM",
        "type": "input",
        "description": "Sets the cycle-by-cycle current limit threshold; when reached, the PWM cycle is terminated and the converter delivers limited current."
      },
      {
        "number": "16",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power good indicator connected to a voltage through an external resistor; high impedance when FB is between 0.616 V and 0.784 V (88% to 112% of VREF)."
      },
      {
        "number": "17",
        "name": "RT",
        "type": "input",
        "description": "A resistor from this pin to ground sets the oscillator frequency."
      },
      {
        "number": "18",
        "name": "CSRT2",
        "type": "output",
        "description": "Return point of the channel 2 current sense voltage; traces must connect directly at the current sense element."
      },
      {
        "number": "19",
        "name": "CS2",
        "type": "input",
        "description": "Senses the channel 2 inductor phase current through an external sense resistor or an R-C network using the inductor DCR, with traces connected directly at the sense element."
      },
      {
        "number": "20",
        "name": "AGND",
        "type": "power_in",
        "description": "Low-noise ground connection to the device."
      },
      {
        "number": "21",
        "name": "BP5",
        "type": "power_out",
        "description": "Filtered output from VIN5 through a 10 Ω resistor; a 1.0 µF ceramic capacitor from this pin to ground is required."
      },
      {
        "number": "22",
        "name": "UVLO",
        "type": "input",
        "description": "A voltage divider from VIN to this pin, set to 1 V, determines the input voltage that starts the controller."
      },
      {
        "number": "23",
        "name": "SS",
        "type": "input",
        "description": "A capacitor on this pin sets the programmable soft-start; after an undervoltage or overcurrent fault the soft-start capacitor cycles 7 times with no switching before a normal soft-start."
      },
      {
        "number": "24",
        "name": "BOOT2",
        "type": "input",
        "description": "Bootstrap supply for the PWM2 high-side FET driver; connect a capacitor from this pin to SW2 and a Schottky diode from this pin to VIN5."
      },
      {
        "number": "25",
        "name": "HDRV2",
        "type": "output",
        "description": "Gate drive output for the PWM2 high-side N-channel MOSFET, referenced to SW2 and bootstrapped for enhancement."
      },
      {
        "number": "26",
        "name": "SW2",
        "type": "input",
        "description": "Connects to the switched node of converter 2 and serves as the power return for the channel 2 upper gate driver, with a high-current return path from the upper MOSFET source."
      },
      {
        "number": "27",
        "name": "LDRV2",
        "type": "output",
        "description": "Gate drive output for the PWM2 low-side synchronous rectifier N-channel MOSFET."
      },
      {
        "number": "28",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground reference for the controller lower gate drivers, requiring a high-current return path from the lower MOSFET sources."
      },
      {
        "number": "29",
        "name": "LDRV1",
        "type": "output",
        "description": "Gate drive output for the PWM1 low-side synchronous rectifier N-channel MOSFET."
      },
      {
        "number": "30",
        "name": "VIN5",
        "type": "power_in",
        "description": "Power input for the device; a 1.0 µF ceramic capacitor should be connected from this pin to ground."
      },
      {
        "number": "31",
        "name": "SW1",
        "type": "input",
        "description": "Connects to the switched node of converter 1 and serves as the power return for the channel 1 upper gate driver, with a high-current return path from the upper MOSFET source."
      },
      {
        "number": "32",
        "name": "HDRV1",
        "type": "output",
        "description": "Gate drive output for the PWM1 high-side N-channel MOSFET, referenced to SW1 and bootstrapped for enhancement."
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The requested 'VQFN-32-EP (5x5)' variant: the extracted text documents the 32-pin RHB QFN and its or; The terminal table lists UVLO as type O, but its function (a divider from VIN sets the start thresho; The terminal table lists BP5, BP8 and VREF as O and CSRT1/CSRT2 as O. BP5, BP8 and VREF were typed p",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0743,
        "at": "2026-10-11T01:31:40"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps40131",
        "pages": 42,
        "sha256": "d6ec566965c86717",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}