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Infineon Technologies CYPD3126-42FNXIT
- Part No.:
- CYPD3126-42FNXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 42-UFBGA, CSPBGA
- Datasheet:
-
CYPD3126-42FNXIT.pdf
- Description:
- CCG3
- Quantity:
- Payment:
- Shipping:
Inventory:2,345
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Product details
Overview
CYPD3126-42FNXIT from Infineon Technologies (formerly Cypress) is a USB Type-C and Power Delivery 3.0 port controller IC with integrated ARM® Cortex®-M0 processor (48 MHz), 128-KB flash, 8-KB SRAM, dual VBUS gate drivers, hardware crypto engine, and 20-V-tolerant regulator. It supports one USB Type-C port with BMC transceiver, VCONN FETs, dead-battery detection, fast role swap, and system-level ±8-kV contact ESD protection on CC/SBU/DP/DM/VBUS pins - deployed in notebooks, docking stations, and power adapters.
For engineers reviewing the CYPD3126-42FNXIT datasheet, CYPD3126-42FNXIT pinout, CYPD3126-42FNXIT application, or CYPD3126-42FNXIT equivalent, key selection criteria include USB-PD 3.0 compliance, integrated VBUS gate driver control logic, 42-ball WLCSP package footprint, industrial temperature range (–40 °C to +105 °C), and firmware-upgradable architecture via I²C/CC/USB interfaces.
Technical Context
The CYPD3126-42FNXIT implements a full USB-PD 3.0 subsystem with Biphase Mark Coding (BMC) PHY, Fast Role Swap (FRS) transmit/detect, and programmable RP/RD/RA terminations for DFP/UFP/EMCA roles. Its analog crossbar enables DisplayPort AUX/SBU remapping, while integrated CSA and OV/UV detectors feed real-time interrupts to disable external VBUS FETs.
It integrates two independent dual-output gate drivers supporting both N- and P-channel external VBUS FETs, configurable via firmware. The 32-bit Cortex-M0 core executes PD policy engine and custom application logic concurrently with full-speed USB Billboard device operation and hardware-accelerated AES/SHA/CRC authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB-PD Standard | Complies with USB Power Delivery 3.0 specification including extended messaging and fast role swap. |
| CPU Core | ARM Cortex-M0 @ 48 MHz with hardware multiplier; enables deterministic PD policy execution and firmware upgradability. |
| Memory | 128-KB flash (dual 64-KB banks) with accelerator; supports secure firmware updates and EEPROM emulation. |
| Voltage Range | 2.7 V to 21.5 V supply operation; accommodates wide-input DC-DC converters in adapter and dock applications. |
| ESD Protection | ±8-kV contact / ±15-kV air-gap per IEC61000-4-2 Level 4C on CC1/CC2/SBU1/SBU2/DP/DM/VBUS pins. |
| Package | 42-ball Wafer-Level Chip Scale Package (WLCSP); 2.1 mm × 2.5 mm footprint for ultra-thin notebook and dongle designs. |
| Temperature Range | Industrial grade: –40 °C to +105 °C ambient; validated for sustained operation in enclosed docking station enclosures. |
Pinout & Package
CYPD3126-42FNXIT is housed in a 42-ball WLCSP (Wafer-Level Chip Scale Package) with 0.4-mm pitch, optimized for space-constrained USB-C port implementations in thin client devices. Ball mapping follows JEDEC MO-220 standard with underfill-compatible solder mask defined.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1 / CC2 | Configuration Channel Interface | Dual bidirectional BMC transceiver inputs; detect cable orientation, negotiate power roles, and manage VCONN sourcing. |
| SBU1 / SBU2 | Sideband Use Channel | Analog crossbar-switched pins for DisplayPort AUX signaling; support hot-plug detection and DP Alt Mode handshaking. |
| VBUS_P_CTRL / VBUS_C_CTRL | External FET Gate Driver Outputs | Two independent dual-output drivers controlling high-side/lower-side gates of external N/P-channel VBUS FETs. |
| V5V | VCONN Supply Input | 5-V input powering internal VCONN FETs; supplies 5-V VCONN to active cables during UFP/DFP negotiation. |
| VBUS_C | Voltage Monitor Input | 20-V-tolerant input for VBUS monitoring; feeds OV/UV comparators and current sense amplifier for overvoltage/overcurrent shutdown. |
| GPIO[0:19] | Configurable I/O Bank | 20 general-purpose pins supporting SCB (I²C/SPI/UART), timer, ADC, or digital I/O functions; 1.71–5.5 V I/O voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB-PD BMC Transceiver | Enables full USB-PD 3.0 communication without external PHY; reduces BOM count and PCB area by eliminating discrete transceivers. |
| Hardware Crypto Engine | Accelerates AES-128/256, SHA-1/256, CRC-32, and PRNG operations; secures firmware image authentication and field updates. |
| Full-Speed USB Billboard Device | Provides standardized USB descriptor reporting for USB-C error states (e.g., "Unrecognized Device") without host driver changes. |
| Programmable VCONN Leakers | Automatically discharges VCONN capacitance during cable disconnect; prevents latch-up and ensures reliable reconnection sequencing. |
| Dual Independent Gate Drivers | Supports mixed N/P-FET topologies for VBUS_P and VBUS_C paths; enables flexible power path design with independent fault response. |
Applications
| USB-C Docking Station | USB-C Power Adapter |
|---|---|
|
Use Scenario: Multi-port docking station with DisplayPort Alt Mode, USB 3.x data, and 100-W PD power delivery. IC Role / Device Role / Timing Role: Central USB-PD policy manager and port controller; handles role negotiation, VBUS switching, HPD control, and Billboard reporting. Use Value: Eliminates need for discrete PD PHY, MCU, and crypto ICs; reduces bill-of-materials and simplifies firmware certification for USB-IF compliance. |
Use Scenario: Compact 65-W GaN-based USB-C wall adapter supporting PPS and variable output voltage. IC Role / Device Role / Timing Role: Primary PD controller managing sink/source negotiation, VBUS regulation feedback, and safety-critical OVP/OCP response. Use Value: Hardware-based overvoltage/overcurrent detection triggers sub-10-µs gate driver shutdown - meets IEC/UL 62368-1 transient safety requirements. |
| Notebook Internal Port Controller | USB-C Dongle |
|
Use Scenario: Thin-and-light laptop with single USB-C port supporting charging, display, and data simultaneously. IC Role / Device Role / Timing Role: Embedded Type-C port controller handling dead-battery detection, VCONN management, and DisplayPort AUX routing via analog crossbar. Use Value: 42-ball WLCSP enables direct placement beneath USB-C receptacle; minimizes trace length for CC/SBU signals to meet USB-IF signal integrity specs. |
Use Scenario: HDMI-to-USB-C dongle with embedded PD negotiation and DisplayPort Alt Mode support. IC Role / Device Role / Timing Role: Dual-role port controller managing cable orientation detection, DP lane configuration, and VBUS power handshake with host. Use Value: Integrated full-speed USB Billboard device reports "Alternate Mode Not Supported" or "Power Delivery Rejected" via standard USB descriptors - no custom driver required. |
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 |
|---|---|---|---|
| STUSB4500QTR | Standalone USB-PD 3.0 PHY with no integrated MCU or flash; requires external microcontroller for policy engine. | Lacks integrated firmware stack and crypto engine; suitable only where host MCU handles PD protocol and security. | Select when leveraging existing MCU resources and requiring minimal silicon footprint - not for standalone port control. |
| TUSB8041A | USB 3.0 hub controller with basic Type-C detection only; no USB-PD support, no BMC transceiver, no VBUS control. | Designed for data-only expansion; cannot negotiate power contracts or switch VBUS FETs. | Choose only for USB-C data multiplexing without power delivery - incompatible with PD-enabled systems. |
Compared with STUSB4500QTR and TUSB8041A, CYPD3126-42FNXIT delivers full self-contained USB-PD 3.0 functionality with integrated MCU, crypto, and gate drivers - enabling certified, secure, and compact single-chip port control without external policy processing.
Availability
CYPD3126-42FNXIT is available at Aetrix Electronics and suitable for notebook internal port control, USB-C docking stations, GaN power adapters, and dongles requiring stable component supply, long-term lifecycle support, and USB-IF certification-ready firmware.
Supply support for CYPD3126-42FNXIT 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
Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, industrial, and connectivity solutions with emphasis on reliability and energy efficiency.
CYPD3126-42FNXIT belongs to the EZ-PD™ CCG3 product line, designed specifically for USB Type-C and Power Delivery port control in space-constrained, thermally demanding consumer and computing applications - integrating policy engine, physical layer, and power switching in one die.
FAQ
Does CYPD3126-42FNXIT support USB Power Delivery 3.0 Programmable Power Supply (PPS)?
Yes. CYPD3126-42FNXIT fully supports USB PD 3.0 PPS through its integrated BMC transceiver and firmware-upgradable policy engine. It enables precise 20-mV voltage and 50-mA current step control during PPS negotiation, meeting USB-IF compliance test requirements for dynamic voltage adjustment in GaN adapters and fast-charging systems.
What is the maximum operating frequency of the integrated ARM Cortex-M0 CPU?
The integrated ARM Cortex-M0 CPU operates at a maximum frequency of 48 MHz, verified across the full industrial temperature range (–40 °C to +105 °C). This clock speed ensures deterministic timing for USB-PD message parsing, BMC decoding, and real-time overcurrent interrupt response within sub-10 µs latency.
Can CYPD3126-42FNXIT drive both N-channel and P-channel VBUS FETs?
Yes. Its dual gate drivers are configurable in firmware to support either N-channel or P-channel external VBUS FETs for both VBUS_P and VBUS_C paths. Default configuration targets nFETs, but register settings allow inversion and timing adjustment for pFET gate drive, enabling flexible power topology design.
Is the 42-ball WLCSP package compatible with standard reflow profiles?
Yes. The CYPD3126-42FNXIT in 42-ball WLCSP (package code FNXIT) is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 3 and supports standard lead-free reflow profiles (peak 260 °C, 60-second duration). Board layout must follow Infineon's recommended thermal pad stencil design and underfill guidelines for mechanical reliability.
CYPD3126-42FNXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- EZ-PD™ CCG3
- Package/Case:
- 42-UFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- USB Type C
- Core Processor:
- ARM® Cortex®-M0
- Program Memory Type:
- FLASH (128kB)
- Controller Series:
- -
- RAM Size:
- 8K x 8
- Interface:
- I2C, SPI, UART/USART, USB
- Number of I/O:
- 16
- Voltage - Supply:
- 2.7V ~ 21.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 42-CSP (3.18x2.63)
CYPD3126-42FNXIT FAQ
1.How can I place an order for CYPD3126-42FNXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPD3126-42FNXIT 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 CYPD3126-42FNXIT reliable?
The price and inventory of CYPD3126-42FNXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD3126-42FNXIT is usually 5 days.
3.What payment methods are accepted for CYPD3126-42FNXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD3126-42FNXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPD3126-42FNXIT?
CYPD3126-42FNXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPD3126-42FNXIT 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 CYPD3126-42FNXIT?
For technical support, including CYPD3126-42FNXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD3126-42FNXIT requirements.
6.How does Aetrix verify that CYPD3126-42FNXIT is sourced from the original manufacturer or authorized distributors?
All CYPD3126-42FNXIT 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 CYPD3126-42FNXIT meets industry standards.
7.What is the process for return or replacement of CYPD3126-42FNXIT?
All CYPD3126-42FNXIT units undergo pre-shipment inspection (PSI). If there is an issue with CYPD3126-42FNXIT, 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 CYPD3126-42FNXIT part is unused and in its original packaging.
Return procedure for CYPD3126-42FNXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYPD3126-42FNXIT Tags
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