My Inquiry
My Account
Flip Electronics CYPD4126-40LQXI
- Part No.:
- CYPD4126-40LQXI
- Manufacturer:
- Flip Electronics
- Category:
- Application Specific Microcontrollers
- Package:
- -
- Description:
- USB TYPE-C PORT CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:510
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CYPD4126-40LQXI from Infineon is a dual-port USB Type-C and Power Delivery 3.0 port controller IC featuring a 48-MHz Arm® Cortex®-M0 CPU, 128 KB flash, 8 KB SRAM, two integrated BMC transceivers, and on-die VCONN FETs - deployed in notebooks, docking stations, and AC/DC power adapters for full PD negotiation and role swap.
For engineers reviewing the CYPD4126-40LQXI datasheet, CYPD4126-40LQXI pinout, CYPD4126-40LQXI application, or CYPD4126-40LQXI equivalent, key selection criteria include dual CC channel support, integrated RP/RD termination, ±8-kV CC-pin ESD rating, deep-sleep current (2.5 µA), and 40-pin QFN package compatibility with industrial temperature range (–40°C to +105°C).
Technical Context
The CYPD4126-40LQXI implements two independent USB-PD 3.0 baseband PHY/MAC subsystems with integrated BMC encoding/decoding, supporting simultaneous Source/Sink negotiation and Fast Role Swap. Each port integrates programmable RP (DFP) and RD (UFP) termination with dead-battery detection logic.
Its MCU subsystem uses an Arm® Cortex®-M0 core with hardware multiplier, NVIC, SWD debug interface, and tightly coupled flash accelerator delivering 85% SRAM-equivalent access performance at 48 MHz - enabling real-time PD protocol stack execution without external memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 48 MHz - enables deterministic USB-PD state machine timing and firmware-upgradable protocol compliance. |
| Flash / SRAM | 128 KB flash + 8 KB SRAM - sufficient for dual-port PD 3.0 stack, vendor-defined policies, and field firmware updates. |
| USB-PD Support | Full USB-PD 3.0 with Extended Messaging - supports Vendor Defined Messages (VDM), SOP', SOP", and structured VDMs for alternate mode negotiation. |
| CC Channel Protection | ±8-kV contact / ±15-kV air-gap ESD on CC pins - meets IEC61000-4-2 Level 4C without external TVS diodes. |
| Power Modes | Deep Sleep: 2.5 µA, Reset: 1.0 µA - enables always-on CC monitoring with battery-backed operation in DRP applications. |
| Package | 40-pin QFN (6.0 mm × 6.0 mm, 0.6 mm pitch) - provides thermal and routing margin for high-density USB-C port designs. |
| Operating Temp | –40°C to +105°C - qualified for industrial-grade notebook, docking station, and adapter environments. |
Pinout & Package
Package: 40-pin QFN (6.0 mm × 6.0 mm, 0.6 mm pitch), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1 / CC2 | Configuration Channel Input/Output | Dual bidirectional BMC signaling lines for USB-C cable orientation detection and PD negotiation on Port 1. |
| CC3 / CC4 | Configuration Channel Input/Output | Dual bidirectional BMC signaling lines for USB-C cable orientation detection and PD negotiation on Port 2. |
| VCONN1 / VCONN2 | VCONN Power Switch Output | Integrated 200-mΩ FETs supply 5 V to EMCA cable electronics - eliminates need for external VCONN drivers. |
| RP1 / RP2 | DFP Pull-up Current Source | Programmable 56 kΩ (default) or 22 kΩ pull-up on each port - signals DFP capability per USB-C spec. |
| RD1 / RD2 | UFP Pull-down Resistor | Integrated 5.1 kΩ termination on each port - enables UFP detection and dead-battery sink behavior. |
| SWDIO / SWCLK | Serial Wire Debug Interface | 2-pin debug interface supporting firmware programming and real-time trace during development and validation. |
| GPIO[0:27] | Configurable General-Purpose I/O | 28 pins with hot-swap capability on CC/I²C lines - usable for status LEDs, button inputs, or system-level control signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual USB-PD BMC Transceivers | Two fully independent physical layers with integrated line drivers/receivers - enables concurrent negotiation on both ports without arbitration delay. |
| Integrated VCONN FETs (x4) | Four 200-mΩ low-RDS(on) switches - powers EMCA cables directly from internal regulator, reducing BOM count by 4 discrete MOSFETs. |
| Programmable RP/RD Termination | On-die 56 kΩ/22 kΩ RP and 5.1 kΩ RD resistors - eliminates 6 external resistors and associated layout area per port. |
| Hot-Swappable CC Pins | ESD-hardened CC1/CC2/CC3/CC4 pins rated for ±8-kV contact - supports safe insertion/removal under live power conditions. |
| Extended Data Messaging | Full USB-PD 3.0 structured VDM support - enables DisplayPort Alt Mode, battery status reporting, and custom vendor commands. |
Applications
| Notebook USB-C Port Controller | Multi-Port Desktop Docking Station |
|---|---|
Use Scenario: Embedded in ultrabook mainboard to manage dual USB-C ports for charging, data, and video output via DP Alt Mode. IC Role / Device Role / Timing Role: Dual-role port controller handling simultaneous PD contract negotiation, VCONN management, and CC orientation detection. Use Value: Enables single-chip solution for Thunderbolt 3/4-compliant host ports with fast role swap (< 200 ms) and robust dead-battery sink operation. | Use Scenario: Central PD manager in 6-port docking station supporting upstream host connection and downstream device charging. IC Role / Device Role / Timing Role: Master PD controller coordinating power allocation across multiple downstream ports using extended messaging and policy engine. Use Value: Delivers dynamic power budgeting up to 100 W per port while maintaining USB-IF certification compliance and thermal safety margins. |
| Universal AC/DC Power Adapter | Industrial USB-C Charging Hub |
Use Scenario: Standalone 65 W GaN adapter with dual USB-C outputs supporting PPS and variable voltage delivery. IC Role / Device Role / Timing Role: Fixed-source PD controller implementing Programmable Power Supply (PPS) profile negotiation and real-time voltage/current adjustment. Use Value: Achieves < 20 mV PPS regulation error and < 10 ms response time to host voltage requests - critical for fast-charging smartphones. | Use Scenario: Ruggedized charging hub for factory-floor devices requiring wide-temp operation and ESD resilience. IC Role / Device Role / Timing Role: Industrial-grade PD controller with –40°C to +105°C qualification and ±8-kV CC-pin ESD protection. Use Value: Eliminates external ESD protection components and maintains reliable CC communication in high-noise manufacturing environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-C port controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYPD4226-40LQXI | Same die, enhanced firmware with USB-PD 3.0 Extended Messaging enabled - includes additional VDM handlers and DP Alt Mode sequencer. | Required for DisplayPort Alt Mode implementations needing native video handshake and lane configuration. | Select when DP Alt Mode or custom VDM-based features are mandatory; otherwise CYPD4126 suffices for basic PD 3.0 power negotiation. |
| STUSB4500QTR | Single-port USB-PD 3.0 controller with embedded policy engine; no MCU, no flash, fixed-function only; 20-pin TSSOP. | Limited to fixed-source or fixed-sink roles; no firmware customization, no dual-port coordination. | Choose for cost-sensitive, single-port adapter designs where flexibility and dual-role operation are unnecessary. |
Compared with CYPD4226-40LQXI, this part omits DP Alt Mode firmware but retains identical hardware and PD 3.0 core functionality; versus STUSB4500QTR, it offers full programmability, dual-port synchronization, and industrial temperature support - making it suitable for complex, field-upgradable systems.
Availability
CYPD4126-40LQXI is available at Aetrix Electronics and suitable for notebook USB-C port control, multi-port docking stations, and universal AC/DC power adapters requiring stable component supply, long-term lifecycle assurance, and industrial temperature support.
Supply support for CYPD4126-40LQXI 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 German semiconductor leader specializing in power management, automotive MCUs, and connectivity solutions, with broad industrial and consumer design-in support.
CYPD4126-40LQXI belongs to the EZ-PD™ CCG4 product line - engineered specifically for USB Type-C and Power Delivery 3.0 system integration in space-constrained, thermally demanding host and adapter applications.
FAQ
Does CYPD4126-40LQXI support USB Power Delivery 3.0 Extended Messaging?
Yes, CYPD4126-40LQXI supports full USB-PD 3.0 Extended Messaging including structured VDMs, SOP'/SOP" packets, and Vendor Defined Messages. Firmware must be configured to enable specific VDM handlers; default factory firmware includes basic VDM support for DisplayPort Alt Mode entry and exit sequences.
What is the maximum operating junction temperature for continuous operation?
The CYPD4126-40LQXI is rated for continuous operation up to +125°C junction temperature. Its industrial temperature grade (–40°C to +105°C ambient) ensures reliable performance in enclosed docking stations and high-power adapters with limited airflow, provided PCB thermal design meets Infineon's recommended copper pour and via guidelines.
Can the GPIO pins be used for I²C communication with external sensors?
Yes, up to four GPIO pins can be configured as I²C master or slave interfaces using the reconfigurable Serial Communication Blocks (SCBs). Each SCB supports I²C up to 1 MHz standard/fast-mode, with built-in clock stretching and ACK/NACK handling - enabling direct connection to temperature, voltage, or status sensors without external level shifters.
Is external crystal required for USB-PD timing accuracy?
No. The CYPD4126-40LQXI integrates a factory-trimmed internal main oscillator (IMO) with ±2% accuracy over temperature and voltage - sufficient for USB-PD BMC timing requirements. An external crystal is optional and only needed if tighter timing tolerance (< ±0.5%) is required for custom protocols or synchronous peripheral interfaces.
CYPD4126-40LQXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Flip Electronics
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Applications:
- -
- Core Processor:
- -
- Program Memory Type:
- -
- Controller Series:
- -
- RAM Size:
- -
- Interface:
- -
- Number of I/O:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CYPD4126-40LQXI FAQ
1.How can I place an order for CYPD4126-40LQXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPD4126-40LQXI 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 CYPD4126-40LQXI reliable?
The price and inventory of CYPD4126-40LQXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD4126-40LQXI is usually 5 days.
3.What payment methods are accepted for CYPD4126-40LQXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD4126-40LQXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPD4126-40LQXI?
CYPD4126-40LQXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPD4126-40LQXI 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 CYPD4126-40LQXI?
For technical support, including CYPD4126-40LQXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD4126-40LQXI requirements.
6.How does Aetrix verify that CYPD4126-40LQXI is sourced from the original manufacturer or authorized distributors?
All CYPD4126-40LQXI 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 CYPD4126-40LQXI meets industry standards.
7.What is the process for return or replacement of CYPD4126-40LQXI?
All CYPD4126-40LQXI units undergo pre-shipment inspection (PSI). If there is an issue with CYPD4126-40LQXI, 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 CYPD4126-40LQXI part is unused and in its original packaging.
Return procedure for CYPD4126-40LQXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYPD4126-40LQXI Tags
-
CYPD3175-24LQXQ
Infineon Technologies
-
SLB9672VU20FW1523XTMA1
Infineon Technologies
-
SLB9670VQ20FW785XTMA1
Infineon Technologies
-
SLB9672XU20FW1523XTMA1
Infineon Technologies
-
SLB9673XU20FW2613XTMA1
Infineon Technologies
-
CYPD3125-40LQXIT
Infineon Technologies
-
AT97SC3204-U2A1A-20
Microchip Technology
-
AT97SC3204-U2A1A-10
Microchip Technology
-
SLM9670AQ20FW1311XTMA1
Infineon Technologies
-
SLB9672XU20FW1613XTMA1
Infineon Technologies
-
SLB9672AU20FW1613XTMA1
Infineon Technologies
-
SLB9673AU20FW2613XTMA1
Infineon Technologies
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
