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UCC28950TPWRQ1
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Texas Instruments DC-DC Converters, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+61@@ -0,0 +1,61 @@+# UCC28950TPWRQ1++**Texas Instruments** · DC-DC Converters · TSSOP-24++UCC28950TPWRQ1 from Texas Instruments, in a TSSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VREF | power_out | Provides a 5 V reference output with ±1.5% accuracy and up to 20 mA of output current. |+| 2 | EA+ | input | Non-inverting input of the error amplifier. |+| 3 | EA- | input | Inverting input of the error amplifier. |+| 4 | COMP | bidirectional | Error amplifier output and input to the PWM comparator. |+| 5 | SS/EN | input | Sets soft-start timing, enables the device, and configures hiccup-mode protection. |+| 6 | DELAB | input | Programs the dead-time delay between OUTA and OUTB. |+| 7 | DELCD | input | Programs the dead-time delay between OUTC and OUTD. |+| 8 | DELEF | input | Programs the delay time between OUTA and OUTF, and between OUTB and OUTE, with a range of 30 ns to 1400 ns. |+| 9 | TMIN | input | Programs the minimum duty cycle in burst mode, with a range of 100 ns to 800 ns. |+| 10 | RT | input | Sets the oscillator frequency and selects leader or follower mode. |+| 11 | RSUM | input | Programs slope compensation and selects voltage-mode or peak-current-mode control. |+| 12 | DCM | input | Sets the discontinuous conduction mode (DCM) threshold, programmable from 5% to 30% of the CS voltage. |+| 13 | ADELEF | input | Programs the delay time between primary-side and secondary-side switches (tAFSET and tBESET). |+| 14 | ADEL | input | Programs the primary-switch dead time over the CS voltage range (tABSET and tCDSET). |+| 15 | CS | input | Senses current for cycle-by-cycle overcurrent protection and the adaptive delay functions. |+| 16 | SYNC | bidirectional | Passes the synchronization signal from the leader controller to the input of the follower controller. |+| 17 | OUTF | output | Primary switching output with 0.2 A sink and source capability. |+| 18 | OUTE | output | Primary switching output with 0.2 A sink and source capability. |+| 19 | OUTD | output | Primary switching output with 0.2 A sink and source capability. |+| 20 | OUTC | output | Primary switching output with 0.2 A sink and source capability. |+| 21 | OUTB | output | Primary switching output with 0.2 A sink and source capability. |+| 22 | OUTA | output | Primary switching output with 0.2 A sink and source capability. |+| 23 | VDD | power_in | Bias supply input; the recommended supply range is 8 V to 17 V, with an absolute maximum of 20 V. |+| 24 | GND | power_in | Ground reference; all signals are referenced to this node. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-24 |+| Category | Power Management (PMIC) |+| Pins | 24 |++## CAD (KiCad official)++- Symbol: `UCC28950TPWRQ1`+- Footprint: `Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm`+- 3D model: TSSOP-24 (KiCad packages3D, STEP)+- 3D model files: `ucc28950tpwrq1-etched.step` / `ucc28950tpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc28950tpwrq1.step` / `ucc28950tpwrq1.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ucc28950-q1) (81 pp, sha256 `f87284109bd08aff`, retrieved 2026-10-08, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ucc28950tpwrq1-datasheet.pdf)
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the recommended supply range is 8 V to 17 V, with an absolute maximum of 20 V."+ },+ {+ "number": "24",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference; all signals are referenced to this node."+ }+ ],+ "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: Pinout taken from the 'Pin Configuration and Functions' table (Pin Functions, pages 3-4), which list; The datasheet covers the UCC28950-Q1 / UCC28951-Q1 family. The orderable addendum (page 74) lists UC; The datasheet types VDD as 'I' and VREF as 'O'. They were mapped to KiCad power_in and power_out bec"+ ],+ "pages_sent": 8,+ "cost_usd": 0.0552,+ "at": "2026-10-08T15:50:09"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ucc28950-q1",+ "pages": 81,+ "sha256": "f87284109bd08aff",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 24,+ "described": 24,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "ucc28950tpwrq1.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 7.8,+ 0.97+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ucc28950tpwrq1-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 7.8,+ 0.97+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "a6cd0f79d3f7c0c8ecc24920cb5475d782d271669c70c5fe61b7645c84b48ff6",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}