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Texas Instruments TUSB422IYFPT
- Part No.:
- TUSB422IYFPT
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 9-XFBGA, DSBGA
- Datasheet:
-
TUSB422IYFPT.pdf
- Description:
- IC INTERFACE SPECIALIZED 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:355
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Product details
Overview
TUSB422IYFPT from Texas Instruments is a USB Type-C™ Port Controller IC implementing the TCPC interface (TCPCi) and BMC-based USB Power Delivery PHY. It provides Configuration Channel (CC) logic for cable orientation detection, attach/detach sensing, current mode advertisement (default/1.5A/3.0A), VCONN sourcing (2.5 W), VBUS detection/discharge, and I²C slave control. It operates from 2.7 V to 5.5 V and supports industrial temperature range (–40°C to 85°C), enabling use in smartphones, power banks, and wall chargers.
For engineers reviewing the TUSB422IYFPT datasheet, TUSB422IYFPT pinout, TUSB422IYFPT application, or TUSB422IYFPT equivalent, key selection considerations include its DSBGA-9 (WCSP) package, I²C-controlled dual-role port (DRP/DFP/UFP) configuration, integrated VCONN switch with overcurrent protection, dead battery support, and compliance with USB Type-C 1.2 and USB PD 2.0/3.0 (excluding Get Source Capabilities Extended).
Technical Context
The TUSB422IYFPT integrates a full BMC-encoded USB PD physical layer with programmable receiver thresholds based on POWER_ROLE register state, supporting bidirectional PD messaging at 300 kbps ±10%. Its CC1/CC2 pins implement configurable Rp/Rd termination, active cable detection, and audio/debug accessory identification via voltage threshold discrimination (e.g., VTH(AC_CC_HIGH) = 0.76–0.84 V).
It features autonomous hardware-level VBUS monitoring with vSafe0V detection, programmable VBUS discharge control via external bleed resistor, and an integrated over-temperature sensing diode (OTSD) that disables VCONN at 150°C. The I²C interface supports Fast Mode Plus (1 MHz) with 10 pF pin capacitance and requires external pull-ups compatible with 1.65–3.6 V system levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 2.7 V to 5.5 V - Enables direct interfacing with common system rails (e.g., 3.3 V or 5 V LDOs) without level-shifting. |
| USB PD Bit Rate | 300 kbps ±10% - Matches USB PD specification timing for reliable BMC frame transmission and reception over CC lines. |
| VCONN Output | 2.5 W (500–850 mA @ 5 V) - Powers active cables with integrated electronics; includes overcurrent fault detection and automatic shutdown. |
| I²C Interface | FM+ capable (up to 1 MHz) - Supports high-speed register access for real-time port state updates and PD message handling. |
| Operating Temp | –40°C to 85°C - Validated for industrial and portable applications where ambient thermal conditions exceed consumer-grade limits. |
| CC Pin Thresholds | VTH(DFP_CC_HIGH) = 2.46–2.74 V - Enables precise 3.0 A source capability detection when configured as UFP, critical for safe power negotiation. |
| Dead Battery Support | VCC(HIGH_DB) = 0.88–2.18 V at VDD = 0 V - Allows CC line biasing and role detection even when host system power is absent. |
Pinout & Package
Package: DSBGA-9 (WCSP), 1.335 mm × 1.380 mm, 0.4 mm pitch - ultra-compact footprint optimized for space-constrained mobile and portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1 / CC2 | Configuration Channel I/O | Bi-directional BMC signaling path for USB Type-C attach/detach, orientation, current mode, and PD messaging; require external 200–450 pF shunt capacitors. |
| VBUSIN | VBUS Input Sense | Direct connection point to Type-C connector VBUS; supports 0–24 V input for detection, discharge control, and vSafe0V/vSafe5V state monitoring. |
| VDD | Core Supply | Main power rail (2.7–5.5 V) for internal logic, PD PHY, and I²C interface; powers all functional blocks except VCONN switch. |
| VCONN | VCONN Output | Regulated 2.7–5.5 V output driving active cables; includes internal FET (RDS(ON) = 0.4–0.75 Ω) and overcurrent fault detection. |
| INT_N | Interrupt Output | Open-drain active-low signal indicating status change (e.g., attach/detach, PD message arrival, fault); requires external pull-up resistor. |
| SCL / SDA | I²C Bus Interface | Standard FM+/FM open-drain I²C signals (1.65–3.6 V compatible); enable TCPM-hosted port management and register configuration. |
| GND | Ground Reference | Primary return path for VDD, VCONN, CC, and I²C circuits; must be low-impedance and co-located with decoupling capacitors. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Role Port (DRP) Autonomy | Hardware-assisted toggling between DFP/UFP states without continuous CPU polling - reduces system power and simplifies TCPM firmware. |
| VCONN Overcurrent Protection | Integrated current limiting (500–850 mA) and fault flag generation - eliminates need for external current-sense circuitry in active-cable applications. |
| Dead Battery Mode Operation | CC pin biasing and role detection functional with VDD = 0 V - enables charging port functionality in fully discharged devices (e.g., smartphones, tablets). |
| USB PD 2.0/3.0 Compliance | Full BMC encoding/decoding, CRC generation/validation, and message framing per USB PD spec - supports power negotiation up to 100 W and Alt Mode enablement. |
| Low Standby Current | 10–12 µA in unattached DRP/DFP/UFP states - extends battery life in portable systems during idle port monitoring. |
Applications
| Smartphone Charging Port | USB-C Wall Charger |
|---|---|
Use Scenario: Mobile phone implements USB-C receptacle with DRP capability, requiring seamless role switching between charging (UFP) and data/power sourcing (DFP) depending on connected device. IC Role / Device Role / Timing Role: TUSB422IYFPT acts as the dedicated TCPC, managing CC line state, detecting cable orientation, advertising current capability, and enabling VCONN for active cables. Use Value: Enables single-port dual-role operation with <12 µA standby current and dead battery support - critical for always-on charging readiness and fast attach response. | Use Scenario: Compact AC/DC adapter with fixed DFP role supplies up to 24 V/3 A, requiring robust VBUS monitoring, VCONN delivery for active cables, and PD message handling for power contract negotiation. IC Role / Device Role / Timing Role: TUSB422IYFPT serves as the USB-C port controller, presenting Rp on both CC lines, detecting sink attachment, initiating PD communication, and controlling VCONN switch activation. Use Value: Integrates VCONN sourcing (2.5 W), VBUS discharge, and PD BMC PHY - eliminates discrete FETs, sense resistors, and external PD transceivers, reducing BOM count and PCB area. |
| Power Bank Hub | Notebook Docking Station |
Use Scenario: Portable power bank with dual USB-C ports (one input, one output) must support simultaneous PD negotiation, direction-aware VBUS routing, and active cable compatibility. IC Role / Device Role / Timing Role: TUSB422IYFPT manages each port's CC logic independently, detects sink/source roles per port, controls VCONN per cable, and signals status changes via INT_N to host MCU. Use Value: Hardware-accelerated DRP state machine and autonomous VBUS discharge reduce MCU intervention - improves power efficiency and enables faster role swaps during multi-device connection. | Use Scenario: Laptop docking station with USB-C upstream port (UFP) and multiple downstream peripherals (DFP), requiring Alt Mode negotiation (e.g., DisplayPort), VCONN for active cables, and robust fault handling. IC Role / Device Role / Timing Role: TUSB422IYFPT handles upstream port CC signaling, VBUS detection, and PD messaging; works with external TCPM to initiate Alt Mode entry and manage VCONN for attached displays. Use Value: Supports USB PD 3.0 messages (except Get Source Capabilities Extended) and precise VTH thresholds for accessory detection - ensures interoperability with certified USB-C monitors and docks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB Type-C port controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP81239MNTXG | Integrates synchronous buck controller for VBUS power path; lacks native PD BMC PHY - requires external PD transceiver. | Targeted at high-power DFP-only applications (e.g., 65 W laptop chargers) where integrated power delivery control is prioritized over compact TCPC functionality. | Select when VBUS power path regulation is required on-die and PD messaging is handled externally; not suitable for DRP or space-constrained UFP designs. |
| STUSB4500QTR | Supports USB PD 3.0 full feature set including Get Source Capabilities Extended; uses different I²C register map and interrupt behavior. | Designed for automotive and industrial applications with extended qualification (AEC-Q100 Grade 2); higher operating temperature range (–40°C to 105°C). | Choose for automotive-grade reliability and complete PD 3.0 compliance; verify TCPM firmware compatibility due to non-TI register layout and interrupt semantics. |
Compared with NCP81239MNTXG and STUSB4500QTR, the TUSB422IYFPT delivers a tightly integrated TCPCi + PD PHY in a 1.38 mm × 1.335 mm WCSP package with industry-leading low-power DRP operation, making it optimal for portable consumer electronics where size, standby current, and USB-C ecosystem interoperability are primary constraints.
Availability
TUSB422IYFPT is available at Aetrix Electronics and suitable for smartphone charging ports, USB-C wall chargers, and power bank hubs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TUSB422IYFPT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies, with leadership in USB interface solutions and power management ICs.
The TUSB422IYFPT belongs to TI's USB Type-C Port Controller product line, designed specifically to offload USB-C physical layer and PD protocol handling from host microcontrollers in portable, battery-powered, and compact power delivery applications.
FAQ
What is the primary function of the TUSB422IYFPT in a USB-C system?
The TUSB422IYFPT serves as a dedicated USB Type-C Port Controller IC that implements the TCPC interface (TCPCi) and USB PD BMC physical layer. It handles CC line signaling for cable orientation, attach/detach detection, current mode advertisement, VCONN sourcing, VBUS monitoring, and PD message encoding/decoding - all under control of an external TCPM via I²C. The TUSB422IYFPT relieves the host MCU of low-level USB-C protocol timing and electrical compliance tasks.
Does the TUSB422IYFPT support USB PD 3.0, and are there any limitations?
Yes, the TUSB422IYFPT supports USB PD 2.0 and most PD 3.0 features, including BMC encoding/decoding, CRC validation, and standard message exchange. However, it explicitly excludes support for the PD 3.0 Get Source Capabilities Extended message: upon receipt, it does not return GoodCRC and does not assert the Rx alert flag, causing the port partner to retry and eventually issue a soft reset. This limitation is documented in the datasheet revision history and applies to the TUSB422IYFPT across all revisions.
How does the TUSB422IYFPT handle dead battery scenarios?
The TUSB422IYFPT supports dead battery mode by maintaining functional CC1/CC2 biasing and detection circuitry even when VDD = 0 V. In this state, it can detect default (0.25–1.5 V), medium (0.45–1.5 V), and high (0.88–2.18 V) current advertisements from an attached DFP, enabling port enumeration and charging initiation before system power is restored. This capability is essential for USB-C chargers and accessories that must operate with fully discharged hosts.
What package type and dimensions does the TUSB422IYFPT use?
The TUSB422IYFPT is packaged in a 9-pin DSBGA (Die Size Ball Grid Array), also labeled WCSP (Wafer Chip Scale Package), with nominal body dimensions of 1.335 mm × 1.380 mm and a 0.4 mm ball pitch. This ultra-compact, bottom-terminal package is optimized for high-density portable PCB layouts and requires careful attention to solder paste volume, reflow profile, and board stack-up to ensure reliable interconnect integrity.
Can the TUSB422IYFPT be configured as a dedicated DFP, UFP, or DRP, and how is this controlled?
Yes, the TUSB422IYFPT is software-configurable as DFP (Downstream Facing Port), UFP (Upstream Facing Port), or DRP (Dual-Role Port) via the Role Control register (address 0x10). Writing 0x05 configures DFP (Rp on both CC pins), 0x0A configures UFP (Rd on both CC pins), and 0x0F enables autonomous DRP toggling. Configuration is performed over I²C by the external TCPM, allowing dynamic role assignment based on system requirements and connected device detection.
TUSB422IYFPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB
- Interface:
- I2C
- Voltage - Supply:
- 2.7V ~ 5.5V
- Supplier Device Package:
- 9-DSBGA
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TUSB422IYFPT FAQ
1.How can I place an order for TUSB422IYFPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB422IYFPT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TUSB422IYFPT reliable?
The price and inventory of TUSB422IYFPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB422IYFPT is usually 5 days.
3.What payment methods are accepted for TUSB422IYFPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB422IYFPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB422IYFPT?
TUSB422IYFPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB422IYFPT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TUSB422IYFPT?
For technical support, including TUSB422IYFPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB422IYFPT requirements.
6.How does Aetrix verify that TUSB422IYFPT is sourced from the original manufacturer or authorized distributors?
All TUSB422IYFPT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TUSB422IYFPT meets industry standards.
7.What is the process for return or replacement of TUSB422IYFPT?
All TUSB422IYFPT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB422IYFPT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TUSB422IYFPT part is unused and in its original packaging.
Return procedure for TUSB422IYFPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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