TPS25751DREFR - USB-C PD 3.2 Controller with Moisture Detection | TI
MPN: TPS25751DREFR ✓ Hoạt độngTPS25751DREFR Tóm tắt
What is a USB Type-C PD controller? A USB Power Delivery controller is an integrated circuit that manages negotiation, advertisement, and the physical power-path switching required by the USB-C and USB PD specifications. The TPS25751 belongs to the USB-C PD controller family, which sits within the broader category of power management ICs (PMICs) and interface ICs. It uses the USB PD 3.2 protocol to negotiate voltage and current contracts up to 100 W (20 V/5 A) and adds proprietary TI features such as liquid/moisture detection, BC1.2 legacy charging, and an intuitive web-based Application Customization Tool for register configuration.
Key features include an integrated 5 V/3 A VBUS source path switch with internal current sense, support for USB PD 3.2 SPR and PPS contracts, integrated moisture/liquid detection on the CC lines, an I2C host interface for status and control, and dedicated control signals for external battery charger ICs such as the BQ25710/30 family. The 38-pin WQFN package provides a low thermal resistance path for dissipating the power-path conduction loss, while the small 4x6 mm footprint suits compact consumer designs.
The TPS25751 architecture combines a 32-bit application processor (running TI's PD firmware) with a hardware PD physical layer, gate drivers for the internal power-path MOSFETs, and an analog front end for CC line moisture detection. Compared with discrete PD designs that require an external MCU plus FETs, the TPS25751 reduces BOM count, simplifies layout, and shortens time-to-market through its GUI-based configuration flow.
Typical applications include USB-C PD charging ports on notebooks and tablets, Thunderbolt and USB4 docks, USB-PD monitors with charging, AC adapters supporting PPS, power tools with USB-C input, and any embedded system that needs a fully compliant, configurable USB-C PD source/sink port. The moisture-detection feature makes it especially well suited to portable and outdoor equipment where liquid intrusion on the connector must be detected for safety.
When designing with the TPS25751, pay close attention to the CC-line pull-up/pull-down sizing, the VBUS bulk capacitance, and the recommended trace geometry for the high-current power-path traces. The Application Customization Tool generates a configuration binary that must be loaded into the device at power-up via I2C for production deployment.
Bộ thay thế dễ dàng lắp đặt cho TPS25751DREFR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
TPS25750DREF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS25751DREF
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TPS25751DRGFR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TPS25730DREF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS25751DREFR Tỷ lệ tối đa & tính chất điện
| Chức năng | USB Type-C and USB Power Delivery 3.2 controller |
| Protocol | USB PD 3.2 (SPR + PPS), USB Type-C 2.1 |
| Hộp | 38-pin WQFN (REF) 4x6 mm |
| Integrated VBUS Switch | 5 V / 3 A source path MOSFET |
| Moisture Detection | Yes (CC-line liquid intrusion detection) |
| Khoảng nhiệt độ hoạt động | -40C to +85C |
| Supply Voltage (VBUS) | 4.75 V to 22 V (typ. 5 V to 20 V) |
| Supply Voltage (VIO / 3V3) | 3.0 V to 3.6 V |
| Host Interface | I2C (100/400/1000 kHz) + GPIO |
| Charger Control | I2C control for external BQ25710/BQ25731 chargers |
| Legacy Charging Support | BC1.2, Apple, DCP, CDP, SDP |
| Role Support | Source / Sink / DRP |
| Configuration Method | TI Application Customization Tool (GUI, binary blob over I2C) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 2 (1 year floor life) |
| Trạng thái RoHS | Compliant |
| Đông trùng haogen | Yes |
Cấu hình chân TPS25751DREFR
| Chân 1 | CC1 — USB-C Configuration Channel 1 (also moisture sense) |
| Chân 2 | CC2 — USB-C Configuration Channel 2 (also moisture sense) |
| Chân 3 | VBUS_SRC — Source-side VBUS switch output to connector |
| Chân 4 | VBUS_SNK — Sink-side VBUS sense input |
| Chân 5 | VIN — System supply input (4.75 V to 22 V) |
| Chân 6 | VIO — 1.8 V/3.3 V I/O reference for host interface |
| Chân 7 | 3V3 — Internal 3.3 V LDO output (decouple with 1 uF) |
| Chân 8 | GND — Ground |
| Chân 9 | SDA — I2C data to host / external charger |
| Chân 10 | SCL — I2C clock to host / external charger |
| Chân 11 | INT — Interrupt output to host MCU (active low) |
| Chân 12 | MRESET — Master reset (active low) |
| Chân 13 | GPIO0 — General-purpose I/O 0 (configurable) |
| Chân 14 | GPIO1 — General-purpose I/O 1 (configurable) |
| Chân 15 | GPIO2 — General-purpose I/O 2 (configurable) |
| Chân 16 | GPIO3 — General-purpose I/O 3 (configurable) |
| Chân 17 | VBUS_FAULT — VBUS over-current / over-voltage fault flag |
| Chân 18 | AUX_PRES — Auxiliary presence detect |
| Chân 19 | CHRG_EN — External charger enable output |
| Chân 20 | PROG — Configuration programming pin (factory / field update) |
| Chân 21 | NC — Not connected (per datasheet) |
| Chân 22 | NC — Not connected (per datasheet) |
| Chân 23 | NC — Not connected (per datasheet) |
| Chân 24 | NC — Not connected (per datasheet) |
| Chân 25 | NC — Not connected (per datasheet) |
| Chân 26 | NC — Not connected (per datasheet) |
| Chân 27 | NC — Not connected (per datasheet) |
| Chân 28 | NC — Not connected (per datasheet) |
| Chân 29 | NC — Not connected (per datasheet) |
| Chân 30 | NC — Not connected (per datasheet) |
| Chân 31 | NC — Not connected (per datasheet) |
| Chân 32 | NC — Not connected (per datasheet) |
| Chân 33 | NC — Not connected (per datasheet) |
| Chân 34 | NC — Not connected (per datasheet) |
| Chân 35 | NC — Not connected (per datasheet) |
| Chân 36 | NC — Not connected (per datasheet) |
| Chân 37 | NC — Not connected (per datasheet) |
| Chân 38 | EP — Exposed thermal pad - solder to GND plane |
Ứng dụng tiêu biểu
TPS25751DREFR phù hợp cho 6 Áp dụngs: Notebook and Tablet USB-C Charging Port, USB-C Docking Station, USB-C Power Adapter (Travel Charger), Cordless Power Tool Charging Cradle, USB-C PD Monitor with Charging, Industrial USB-C Sensor Hub.
Notebook and Tablet USB-C Charging Port
The TPS25751DREFR provides a fully compliant USB-C Power Delivery 3.2 source port for notebook and tablet designs. Its integrated 5 V/3 A VBUS switch removes the need for an external high-side MOSFET and current-sense amplifier, while PPS support enables fast-charging smartphones from the same port. Configuration is handled through TI's web-based Application Customization Tool, eliminating firmware development on the host MCU.
Được đề xuất
USB-C Docking Station
Docking stations benefit from the TPS25751DREFR's DRP (dual-role power) capability and integrated power-path MOSFETs. A single TPS25751 negotiates up to 100 W PD contracts to charge the host laptop while simultaneously accepting a downstream display or phone. The I2C host interface allows the dock's main MCU to query real-time PD status (voltage, current, attached-device identity) for LED indication and OSD display.
Được đề xuất
USB-C Power Adapter (Travel Charger)
Travel adapters built around the TPS25751DREFR advertise PPS, QC, and BC1.2 legacy protocols from a single Type-C port. The integrated source switch simplifies thermal design for a 45-65 W adapter, and moisture detection adds a safety layer for users in outdoor or kitchen environments. TI's configuration tool generates the entire PD personality without writing firmware, accelerating time-to-market for new SKU launches.
Được đề xuất
Cordless Power Tool Charging Cradle
Cordless power tools increasingly adopt USB-C PD inputs to standardize chargers. The TPS25751DREFR accepts a 60-100 W PD contract from any compliant adapter and routes it to the tool's battery charger. Moisture detection is especially valuable in workshop and outdoor environments where sawdust or rain could otherwise bridge CC pins, and the WQFN package's thermal pad dissipates the negotiation ripple efficiently.
Được đề xuất
USB-C PD Monitor with Charging
USB-C monitors must both charge an attached laptop (sink role for upstream) and power a downstream phone or peripheral (source role). The TPS25751DREFR supports both modes plus DRP, allowing one controller to handle the upstream port while a second TPS25751DREFR handles a downstream charging port. PPS enables fast-charging attached smartphones without sacrificing display power delivery.
Được đề xuất
Industrial USB-C Sensor Hub
Industrial sensor hubs require a robust, moisture-aware USB-C PD input that can survive factory floors. The TPS25751DREFR's moisture detection and wide 4.75 V to 22 V VBUS tolerance (per datasheet) make it a good fit, and its -40C to +85C operating range covers industrial enclosures. The I2C host interface exposes attach/detach events so the host MCU can log connect/disconnect cycles for diagnostics.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TPS25751DREFR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TPS25750DREF | TPS25751DREF | TPS25751DRGFR | TPS25730DREF |
|---|---|---|---|---|---|
| Package | 38-WQFN (REF) 4x6 mm | 38-WQFN (REF) 4x6 mm - same | 38-WQFN (REF) 4x6 mm - same | 38-WQFN (REF) 4x6 mm - same | 38-WQFN (REF) 4x6 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| USB PD Version | PD 3.2 (SPR + PPS) | PD 3.0 (no PPS) | PD 3.2 (SPR + PPS) - identical | PD 3.2 (SPR + PPS) - identical | PD 3.0 (sink focused) |
| Integrated VBUS Switch | 5 V / 3 A (source path) | 5 V / 3 A (source path) | 5 V / 3 A (source path) - identical | 5 V / 3 A (source path) - identical | Sink role - no source switch in default config |
| Moisture Detection | Yes | No | Yes - identical | Yes - identical | No |
| PPS Support | Yes | No | Yes - identical | Yes - identical | Limited |
| Role Support | Source / Sink / DRP | Source / Sink / DRP | Source / Sink / DRP - identical | Source / Sink / DRP - identical | Sink focused |
| Host Interface | I2C + GPIO | I2C + GPIO | I2C + GPIO - identical | I2C + GPIO - identical | I2C + GPIO |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C - identical | -40C to +85C - identical | -40C to +85C |
Bảo phân biệt quan trọng
- Fully integrated source path eliminates external high-side MOSFETs (vsTPS25730DREF)
- CC-line moisture detection is unique in the TI PD portfolio (vsTPS25750DREF)
- PD 3.2 + PPS support (vsFUSB302 (onsemi))
Ghi chú thiết kế
Lay out the CC1 and CC2 traces as a 90-ohm differential pair and route them as short, symmetrical stubs directly to the USB-C connector. Decouple the 3V3 and VIO pins with 1 uF X7R ceramics placed within 2 mm of the pin, and bond the WQFN-38 exposed pad (EP) to a continuous ground pour with at least 8 thermal vias (0.3 mm drill, 0.5 mm pitch). These steps minimize moisture-sensing false triggers and keep the integrated source MOSFET within thermal limits at 3 A continuous load.
The integrated VBUS source switch carries 3 A continuous; use a 4 mm wide copper pour on both top and bottom layers for the VBUS traces and stitch them with 0.5 mm thermal vias to spread heat. Add a 22 uF/25 V low-ESR ceramic (X7R or X6S) directly at the connector VBUS pin to absorb PD step transients and meet USB-C droop requirements during role swaps.
Do not skip the TPS25751 configuration binary: out of reset the device will not advertise any PD profiles until the Application Customization Tool-generated binary has been loaded via I2C. Store the binary in the host MCU's flash and push it during boot. Also, do not reuse the TPS25750 binary on a TI cartridge without re-validating against the TPS25751 register map, even though the parts are pin-compatible - the firmware blob differs.
Keep the high-speed USB2.0 D+/D- pair separated from the CC lines and the VBUS switching node. Place ESD protection (e.g., TPD4E05U06) within 3 mm of the USB-C connector with a direct ground return to the chassis ground. For moisture-detection accuracy, avoid sharing CC ground returns with high-current VBUS paths.
Thông tin tuân thủ
RoHS and halogen-free per TI product page. USB-IF compliance is dependent on the integrator's USB-C connector and cannot be certified at the IC level alone. No AEC-Q100 variant in the Verified Web Data; the part targets commercial / industrial environments.
